Log in

Relevant bibliographies by topics / Pc-WLEDs / Journal articles

To see the other types of publications on this topic, follow the link: Pc-WLEDs.

Journal articles on the topic 'Pc-WLEDs'

Author: Grafiati

Published: 16 September 2023

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Pc-WLEDs.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Thuy My, Le Thi, My Hanh Nguyen Thi, and Hoang Thinh Nhan. "Yellow-green emitting CaGa2S4:Eu2+ phosphor: an application for enhancing the luminous flux of the white light emitting diodes." Indonesian Journal of Electrical Engineering and Computer Science 32, no. 1 (2023): 90. http://dx.doi.org/10.11591/ijeecs.v32.i1.pp90-97.

Full text

Abstract:

The <span lang="EN-GB">optimal spectral characteristics and photometric qualities in white-emitting light-emitting diodes (WLEDs) featuring red-emitting LEDs instead of phosphor (pc/R-WLEDs) were determined using the luminescent efficiency (LE) theory. The color quality scale (Rf) is higher than 97K for correlating color temperature (CCTs) ranging between 2700K and 6500K. We first identified genuine pc/R-WLEDs having Rf levels at 96–97, LE levels at 120–124 lm/W with CCT levels at 2969K, 4468K, 5682K, as well as 6558K with the utilization of all four-color phosphors: blues (448 nm), redd

APA, Harvard, Vancouver, ISO, and other styles

2

Le, Thi Thuy My, Hanh Nguyen Thi My, and Thinh Nhan Hoang. "Yellow-green emitting CaGa2S4:Eu2+ phosphor: an application for enhancing the luminous flux of the white light emitting diodes." Yellow-green emitting CaGa2S4:Eu2+ phosphor: an application for enhancing the luminous flux of the white light emitting diodes 32, no. 1 (2023): 90–97. https://doi.org/10.11591/ijeecs.v32.i1.pp90-97.

Full text

Abstract:

The optimal spectral characteristics and photometric qualities in whiteemitting light-emitting diodes (WLEDs) featuring red-emitting LEDs instead of phosphor (pc/R-WLEDs) were determined using the luminescent efficiency (LE) theory. The color quality scale (Rf) is higher than 97K for correlating color temperature (CCTs) ranging between 2700K and 6500K. We first identified genuine pc/R-WLEDs having Rf levels at 96–97, LE levels at 120–124 lm/W with CCT levels at 2969K, 4468K, 5682K, as well as 6558K with the utilization of all four-color phosphors: blues (448 nm), reddish (650 nm) L

APA, Harvard, Vancouver, ISO, and other styles

3

Ha, Thanh Tung, and Phuc Dang Huu. "Study of Ba2Li2Si2O7:Eu2+ phosphor for enhancing the luminous flux of white LEDs." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 21, no. 3 (2023): 641–48. https://doi.org/10.12928/telkomnika.v21i3.24748.

Full text

Abstract:

The best spectrum characteristics and photometric productivities of white light emitting diode (WLED) device possessing light emitting diodes (LEDs) in red rather than phosphor pc/R-WLEDs with the hue fidelity index (Rf) > 97 for correlated color temperatures (CCTs) between 2700 K and 6500 K were attained using the illumination effectiveness (LE) model. We demonstrate four practical pc/R-WLEDs that have indices of Rf<sub> </sub>and LE of 96–97 and 120–124 lm/W, respectively, under CCT values measured at 2969 K, 4468 K, 5682 K, as well as 6558 K. These LED packages use blue

APA, Harvard, Vancouver, ISO, and other styles

4

Dang Huu, Phuc, Nguyen Le Thai, and Phan Xuan Le. "Studying CdS:In green phosphor's impacts on white-light emitting diode with higher luminous flux." Materials Science-Poland 40, no. 2 (2022): 159–69. http://dx.doi.org/10.2478/msp-2022-0014.

Full text

Abstract:

Abstract A lumen efficiency (LE) simulation model with the Monte Carlo method is introduced to the white-light-emitting diode devices that utilize the red LED (light-emitting diode) dyes instead of red-emitting phosphors (R-WLEDs). By simulating this model, the desirable spectrum-related indices and photometric efficiencies, which are adequate for superior chromatic consistency (or R f > 97), can be accomplished for R-WLEDs under the correlated color temperature (CCT) range of 5000–8000 K. The structure of the R-LED has LEDs in red and blue colors (650 nm and 448 nm) combined with phosphors

APA, Harvard, Vancouver, ISO, and other styles

5

Dang, Huu Phuc, Nguyen Thi Phuong Loan, Thanh Tung Nguyen, and Sang Dang Ho. "Applying calcium fluoride and silica particles: A solution to improve color homogeneity of pc-WLEDS." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (2021): 3864. http://dx.doi.org/10.11591/ijece.v11i5.pp3864-3869.

Full text

Abstract:

<span>This article focuses on enhancing the lighting efficiency of pc-WLEDs, a new and advanced lighting solution that has received lots of attention. To adapt to the demand of modern lighting, the lighting performance of pc-WLEDs must be improved, especially the color homogeneity and luminous flux, two of the most important quality indicators of pc-WLEDs. Through experiments, this article proposes using the scattering enhancement particles (SEPs) such as CaF<sub>2 </sub>and SiO<sub>2 </sub>with yellow phosphor Y<sub>3</sub>Al<sub>5</sub>O&

APA, Harvard, Vancouver, ISO, and other styles

6

Tsai, Chun-Chin. "Color Rendering Index Thermal Stability Improvement of Glass-Based Phosphor-Converted White Light-Emitting Diodes for Solid-State Lighting." International Journal of Photoenergy 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/407239.

Full text

Abstract:

High color rendering index performance has been required for phosphor-converted warm-white light-emitting diodes (PC-WWLEDs) in lighting industry. The characteristics of low-temperature fabricated phosphor (yellow: Ce3+:YAG, green: Tb3+:YAG, and red: CaAlClSiN3:Eu2+) doped glass were presented for applications to high color rendering index warm-white-light-emitting diodes. Color coordinates (x, y) = (0.36, 0.29), quantum yield (QY) = 55.6%, color rending index (CRI) = 85.3, and correlated color temperature (CCT) = 3923 K were characterized. Glass-based PC-WWLEDs was found able to maintain good

APA, Harvard, Vancouver, ISO, and other styles

7

Huu, Phuc Dang, Thi Phuong Loan Nguyen, Tung Nguyen Thanh, and Dang Ho Sang. "Applying calcium fluoride and silica particles: A solution to improve color homogeneity of pc-WLEDS." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (2021): 3864–69. https://doi.org/10.11591/ijece.v11i5.pp3864-3869.

Full text

Abstract:

This article focuses on enhancing the lighting efficiency of pc-WLEDs, a new and advanced lighting solution that has received lots of attention. To adapt to the demand of modern lighting, the lighting performance of pcWLEDs must be improved, especially the color homogeneity and luminous flux, two of the most important quality indicators of pc-WLEDs. Through experiments, this article proposes using the scattering enhancement particles (SEPs) such as CaF 2 and SiO 2 with yellow phosphor Y 3 Al 5 O 12 :Ce in pcWLEDs configuration. The pc-WLEDs model is created by using the LightTools program and

APA, Harvard, Vancouver, ISO, and other styles

8

Peng, Gang, Zhijie Zhu, Yu Tian, et al. "Dendrimer-induced colloids towards robust fluorescent photonic crystal films and high performance WLEDs." Journal of Materials Chemistry C 6, no. 30 (2018): 8187–93. http://dx.doi.org/10.1039/c8tc02484g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Xing, Gongcheng, Yuxin Feng, Zhiyu Gao, et al. "A novel red-emitting La2CaHfO6:Mn4+ phosphor based on double perovskite structure for pc-WLEDs lighting." CrystEngComm 21, no. 23 (2019): 3605–12. http://dx.doi.org/10.1039/c9ce00556k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Lin, Yuan-Chih, Paul Erhart, and Maths Karlsson. "Vibrationally induced color shift tuning of photoluminescence in Ce3+-doped garnet phosphors." Journal of Materials Chemistry C 7, no. 41 (2019): 12926–34. http://dx.doi.org/10.1039/c9tc01244c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Li, Chenghang, Zikeng Fang, Ying Yan, et al. "Study on the Performance of Deep Red to Near-Infrared pc-LEDs by the Simulation Method Considering the Distribution of Phosphor Particles." Micromachines 15, no. 8 (2024): 1035. http://dx.doi.org/10.3390/mi15081035.

Full text

Abstract:

Effectively utilizing deep red to near-infrared (DR-NIR) phosphors to achieve the optimal performance of NIR phosphor-converted white LEDs (DR-NIR pc-wLEDs) is currently a research hotspot. In this study, an optical model of DR-NIR pc-wLEDs with virtual multilayer fluorescent films was established based on the Monte Carlo ray-tracing method. Different gradient distributions of the particles were assigned within the fluorescent film to explore their impact on the optical performance of pc-LEDs. The results show that, for the case with single-type particles, distributing more DR-NIR particles fa

APA, Harvard, Vancouver, ISO, and other styles

12

Hong, Feng, Ge Pang, Lijuan Diao, et al. "Local structure modulation of Mn4+-doped Na2Si1−yGeyF6 red phosphors for enhancement of emission intensity, moisture resistance, thermal stability and application in warm pc-WLEDs." Dalton Transactions 49, no. 39 (2020): 13805–17. http://dx.doi.org/10.1039/d0dt02935a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Santra, Angshuman, Nisnat Chakraborty, Karamjyoti Panigrahi, Kalyan K. Chattopadhyay, and Uttam Kumar Ghorai. "SrTiO3: Sm3+, Na+-codoped orange-emitting nanophosphor for pc-WLEDs." Journal of Materials Science: Materials in Electronics 33, no. 11 (2021): 1–15. http://dx.doi.org/10.1007/s10854-021-06876-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Shih, Bao-Jen, Shih-Chen Chiou, Yu-Hua Hsieh, et al. "Study of temperature distributions in pc-WLEDs with different phosphor packages." Optics Express 23, no. 26 (2015): 33861. http://dx.doi.org/10.1364/oe.23.033861.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Wei, Yi, Hui Jia, Hui Xiao, et al. "Emitting-tunable Eu(2+/3+)-doped Ca(8−x)La(2+x) (PO4)6−x(SiO4)xO2 apatite phosphor for n-UV WLEDs with high-color-rendering." RSC Advances 7, no. 4 (2017): 1899–904. http://dx.doi.org/10.1039/c6ra26869b.

Full text

Abstract:

A colorful phosphor [Ca<sub>8−x</sub>La<sub>2+x</sub>(PO<sub>4</sub>)<sub>6−x</sub>(SiO<sub>4</sub>)<sub>x</sub>O<sub>2</sub>:Eu<sup>2+</sup>/Eu<sup>3+</sup>] was designed by cosubstituting [Ca<sup>2+</sup>–P<sup>5+</sup>] for [La<sup>3+</sup>–Si<sup>4+</sup>] for pc-WLEDs with a high CRI.

APA, Harvard, Vancouver, ISO, and other styles

16

Wenting, Cai. "Effects of Fe2+ on Moisture Resistance of Fluoride Red Phosphors." E3S Web of Conferences 271 (2021): 04008. http://dx.doi.org/10.1051/e3sconf/202127104008.

Full text

Abstract:

Nowadays, K2SiF6:Mn4+ has been made extensive use of in technologies available, applied to LCD (Liquid crystal display) and pc-WLEDs (Phosphor-converted white light-emitting diodes). Nevertheless, there are still some significant problems needing solved, one of which is the poor moisture resistance. To expand its application in optical devices, this paper proposes a green and simple strategy on the basis of Fe2+, which effectively achieves a reduction of the reaction between water and luminescence center.

APA, Harvard, Vancouver, ISO, and other styles

17

Cai, Wenting. "Highly Stable Mn4+-Activated Red-Emitting Fluoride Phosphors and Enhanced moisture stability for White LEDs." E3S Web of Conferences 271 (2021): 04016. http://dx.doi.org/10.1051/e3sconf/202127104016.

Full text

Abstract:

As a highly productive narrow-band emission red phosphor, K2SiF6:Mn4+ has towardly application market in pc-WLEDs (Phosphor-converted white light-emitting diodes) and LCD (Liquid crystal display). However, the poor moisture resistance property is recognized impediment for generalizing its wider commercialization. Herein, we adopt a simply green and convenient strategy based on Fe2+, which is committed to decreasing the reaction between luminescence center and water. The K2SiF6:Mn4+ as expected exhibits highly efficient red emission upon excitation.

APA, Harvard, Vancouver, ISO, and other styles

18

Chung, Te-yuan, Shih-Chen Chiou, Yu-Yu Chang, Ching-Cherng Sun, Tsung-Hsun Yang, and Szu-Yu Chen. "Study of Temperature Distribution Within pc-WLEDs Using the Remote-Dome Phosphor Package." IEEE Photonics Journal 7, no. 2 (2015): 1–11. http://dx.doi.org/10.1109/jphot.2015.2412934.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Guogang, Ying Tian, Yun Zhao, and Jun Lin. "Recent progress in luminescence tuning of Ce3+and Eu2+-activated phosphors for pc-WLEDs." Chemical Society Reviews 44, no. 23 (2015): 8688–713. http://dx.doi.org/10.1039/c4cs00446a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Tong, Ye, YiHang Chen, SunYueZi Chen, RongFei Wei, LiPing Chen, and Hai Guo. "Luminescent properties of Na2GdMg2(VO4)3:Eu3+ red phosphors for NUV excited pc-WLEDs." Ceramics International 47, no. 9 (2021): 12320–26. http://dx.doi.org/10.1016/j.ceramint.2021.01.083.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Hooda, Anju, S. P. Khatkar, Sushma Devi, and V. B. Taxak. "Structural and spectroscopic analysis of green glowing down-converted BYO:Er3+ nanophosphors for pc-WLEDs." Ceramics International 47, no. 18 (2021): 25602–13. http://dx.doi.org/10.1016/j.ceramint.2021.05.286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Zheng, Weibing, Haibo Rao, Ting Li, Qinghao Meng, Jun Peng, and Zhiqi Wu. "Optimized Self-Adaptive Phosphor-Coating Structure of pc-WLEDs by Double Conformal Coating Technology." IEEE Transactions on Components, Packaging and Manufacturing Technology 9, no. 6 (2019): 1200–1202. http://dx.doi.org/10.1109/tcpmt.2019.2912025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Zhao, Ming, Zhiguo Xia, Xiaoxiao Huang, et al. "Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability." Science Advances 5, no. 1 (2019): eaav0363. http://dx.doi.org/10.1126/sciadv.aav0363.

Full text

Abstract:

Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO4:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO4:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu3+to Eu2+reduction, an emission color tuning from yellow to green by tuni

APA, Harvard, Vancouver, ISO, and other styles

24

Yu, Bin, Yuchan Li, Yunjian Wang, and Lei Geng. "Double-site Eu3+ occupation in the langbeinite-type phosphate phosphor toward adjustable emission for pc-WLEDs." Journal of Alloys and Compounds 874 (September 2021): 159862. http://dx.doi.org/10.1016/j.jallcom.2021.159862.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Yang, Chenguang, Yangai Liu, Haojun Yu, et al. "Introducing cation disorder to enhance thermal stability in LuY3(BO3)4: Eu3+ phosphors for pc-WLEDs." Optical Materials 129 (July 2022): 112501. http://dx.doi.org/10.1016/j.optmat.2022.112501.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Zhang, Xinyi, and Jian-Feng Sun. "Intense blue emission of perovskite-type fluoride phosphor Cs4Mg3CaF12: Eu2+ as a promising pc-WLEDs material." Journal of Alloys and Compounds 835 (September 2020): 155225. http://dx.doi.org/10.1016/j.jallcom.2020.155225.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Sehrawat, Priyanka, Avni Khatkar, Anju Hooda, et al. "An energy-efficient novel emerald Er3+ doped SrGdAlO4 nanophosphor for PC WLEDs excitable by NUV light." Ceramics International 45, no. 18 (2019): 24104–14. http://dx.doi.org/10.1016/j.ceramint.2019.08.118.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Yu, Bin, Yuchan Li, Ruiping Zhang, Hua Li, and Yunjian Wang. "A novel thermally stable eulytite-type NaBaBi2(PO4)3:Eu3+ red-emitting phosphor for pc-WLEDs." Journal of Alloys and Compounds 852 (January 2021): 157020. http://dx.doi.org/10.1016/j.jallcom.2020.157020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Sheoran, Monika, Priyanka Sehrawat, Mukesh Kumar, et al. "Synthesis and crystal structural analysis of a green light-emitting Ba5Zn4Y8O21:Er3+ nanophosphor for PC-WLEDs applications." Journal of Materials Science: Materials in Electronics 32, no. 9 (2021): 11683–94. http://dx.doi.org/10.1007/s10854-021-05787-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Shakhno, Anna, Anton Markovskyi, Tetiana Zorenko, et al. "Micropowder Ca2YMgScSi3O12:Ce Silicate Garnet as an Efficient Light Converter for White LEDs." Materials 15, no. 11 (2022): 3942. http://dx.doi.org/10.3390/ma15113942.

Full text

Abstract:

This work is dedicated to the crystallization and luminescent properties of a prospective Ca2YMgScSi3O12:Ce (CYMSSG:Ce) micropowder (MP) phosphor converter (pc) for a white light–emitting LED (WLED). The set of MP samples was obtained by conventional solid-phase synthesis using different amounts of B2O3 flux in the 1–5 mole percentage range. The luminescent properties of the CYMSSG:Ce MPs were investigated at different Ce3+ concentrations in the 1–5 atomic percentage range. The formation of several Ce3+ multicenters in the CYMSSG:Ce MPs was detected in the emission and excitation spectra as we

APA, Harvard, Vancouver, ISO, and other styles

31

Sheoran, Monika, Priyanka Sehrawat, Neelam Kumari, Mukesh Kumar, and R. K. Malik. "Fabrication and photoluminescent features of cool-white light emanating Dy3+ doped Ba5Zn4Gd8O21 nanophosphors for near UV-excited pc-WLEDs." Chemical Physics Impact 4 (June 2022): 100063. http://dx.doi.org/10.1016/j.chphi.2022.100063.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Le, Phan Xuan, and Le Hung Tien. "Triple-layer remote phosphor structure: a selection of the higher color quality and lumen efficiency for WLEDs." Bulletin of Electrical Engineering and Informatics 10, no. 4 (2021): 1960–67. http://dx.doi.org/10.11591/eei.v10i4.3084.

Full text

Abstract:

To enhance color quality of glass-based phosphor-converted white light-emitting diodes (pc-WLEDs) with multi-layer remote phosphor layer structures, two phosphors, green CdS:In and red ZnS:Te,Mn, are integrated into the glass matrix and applied to the dual-layer and triple-layer WLED packages. The attained results were examined with Mie-scattering theory and Lambert-Beer law. The dual-layer showed significant enhancement in color rendering index (CRI), in the range of approximate 80-90. Meanwhile, CRI in the triple-layer was lower and stayed around 66. In terms of color quality scale (CQS), a

APA, Harvard, Vancouver, ISO, and other styles

33

Phan, Xuan Le, and Hung Tien Le. "Triple-layer remote phosphor structure: a selection of the higher color quality and lumen efficiency for WLEDs." Bulletin of Electrical Engineering and Informatics 10, no. 4 (2021): 1960~1967. https://doi.org/10.11591/eei.v10i4.3084.

Full text

Abstract:

To enhance color quality of glass-based phosphor-converted white light-emitting diodes (pc-WLEDs) with multi-layer remote phosphor layer structures, two phosphors, green CdS:In and red ZnS:Te,Mn, are integrated into the glass matrix and applied to the dual-layer and triple-layer WLED packages. The attained results were examined with Mie-scattering theory and Lambert-Beer law. The dual-layer showed significant enhancement in color rendering index (CRI), in the range of approximate 80-90. Meanwhile, CRI in the triple-layer was lower and stayed around 66. In terms of color quality scale (CQS), a

APA, Harvard, Vancouver, ISO, and other styles

34

Sakthivel, Thangavel, G. Annadurai, R. Vijayakumar, and Xiaoyong Huang. "Synthesis, luminescence properties and thermal stability of Eu3+-activated Na2Y2B2O7 red phosphors excited by near-UV light for pc-WLEDs." Journal of Luminescence 205 (January 2019): 129–35. http://dx.doi.org/10.1016/j.jlumin.2018.09.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Sehrawat, Priyanka, Avni Khatkar, Sushma Devi, et al. "An effective emission of characteristic cool white light from Dy3+ doped perovskite type SrLa2Al2O7 nanophosphors in single-phase pc WLEDs." Chemical Physics Letters 737 (December 2019): 136842. http://dx.doi.org/10.1016/j.cplett.2019.136842.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Boonmee, Chaiyant, Warunee Srisongkram, Wipada Wongsuriya, Patcharanan Sritanauthaikorn, Paiboon Kiatsookkanatorn, and Napat Watjanatepin. "Impact of natural-white and red-blue light-emitting diode lighting on hydroponic basil growth and energy efficiency." International Journal of Advances in Applied Sciences 14, no. 2 (2025): 406. https://doi.org/10.11591/ijaas.v14.i2.pp406-415.

Full text

Abstract:

Advanced phosphor-converted white light-emitting diodes (pc-WLEDs) have been developed to mimic the natural sunlight spectrum, potentially enhancing plant growth compared to traditional red-blue (R-B) LEDs. This study aimed to compare the effects of natural-white pc-WLED (nsW-pcLED) and conventional R-B LED (R:B 3.24) on the growth, yield, and energy efficiency of hydroponically grown sweet basil. It was cultivated in a deep-water culture system under identical conditions with a photosynthetic photon flux density (PPFD) of 200±10 µmol·m⁻²·s⁻¹ and a 16/8 light/dark photoperiod over 28 days. Key

APA, Harvard, Vancouver, ISO, and other styles

37

Nguyen, Quang-Khoi, and Thi-Hanh-Thu Vu. "An Efficient Method for Simulating the Temperature Distribution in Regions Containing YAG:Ce3+ Luminescence Composites of White LED." Journal of Composites Science 7, no. 7 (2023): 301. http://dx.doi.org/10.3390/jcs7070301.

Full text

Abstract:

A thermal model was built to estimate the temperature distribution in the hemispherical packaging volume of a white LED at a steady state. Inherent heat sources appeared in the white LED when its power was measured. A simplified 3D to 2D space process that improves the model and solves the heat diffusion equation in a simpler and faster manner is presented. The finite element method was employed using MATLAB software (version R2017b) to identify the temperature distribution. The model was applied for different values of injection current, including 50 mA, 200 mA, 350 mA, and 500 mA. The influe

APA, Harvard, Vancouver, ISO, and other styles

38

Le, Phan Xuan, Tran Thanh Trang, Nguyen Doan Quoc Anh, Hsiao-Yi Lee, and Le Van Tho. "Comparison between SEPs of CaCO₃ and TiO₂ in phosphor layer for better color uniformity and stable luminous flux of WLEDs with 7,000 K." Materials Science-Poland 40, no. 1 (2022): 1–8. http://dx.doi.org/10.2478/msp-2022-0008.

Full text

Abstract:

Abstract CaCO3 and TiO2 are proposed in this study as particles for scattering enhancement (SEPs) of phosphor-converted white light-emitting diodes (pc-WLEDs). The use of these two SEPs for scattering improvement enables boosting of the color homogeneity of the WLED devices. Each SEP is mixed with YAG:Ce3+ and silicone composition to examine their optical influences and performances on the high-power WLED packages with 7,000 K color temperature (CT). Miescattering theory is applied to calculate and investigate the scattering elements – scattering coefficients, anisotropic scattering, the reduc

APA, Harvard, Vancouver, ISO, and other styles

39

Huang, Xiaoyong, Jingliang Cen, Balaji Devakumar, and Xiaoyuan Chen. "High-brightness and high-color-purity red-emitting Ca8MEu(PO4)7 (M = Mg and Zn) phosphate phosphors for near-UV-pumped pc-WLEDs." Materials Today Chemistry 43 (January 2025): 102493. https://doi.org/10.1016/j.mtchem.2024.102493.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Tadge, Prachi, and Sudeshna Ray. "Mineral-Inspired Approach Mediated Design, Solution Synthesis, and Characterization and Luminescence Study of Blue Emitting Phosphor BaSc₂Si₃O₁₀:Eu²⁺." ECS Transactions 107, no. 1 (2022): 16409–22. http://dx.doi.org/10.1149/10701.16409ecst.

Full text

Abstract:

A series of new silicate based luminescence materials, Ba1-xEuxSc2Si3O10 (BSS:Eu2+) (x = 0.005, 0.01, 0.02, 0.05, 0.07), which can be efficiently excited by UV light and generates a broadband bright blue emission, with ‘Internal Quantum Efficiency’ 45% have been developed from a water-soluble propylene glycol modified silane (PGMS) based silicon precursor by a systematic solution based bottom up approach. The concept as well as the methodology of using a ‘Mineral Inspired Approach’ emerges as a new blueprint for the strategic design of novel phosphors for phosphor converted white light emittin

APA, Harvard, Vancouver, ISO, and other styles

41

Nguyen Thi, Dieu An, and Phan Xuan Le. "Synthesis and photoluminescence properties in white light-emitting diodes of oxynitride green phosphor Ba3Si6O12N2." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 3 (2022): 1264. http://dx.doi.org/10.11591/ijeecs.v27.i3.pp1264-1269.

Full text

Abstract:

<span>Utilizing boron-coated Eu<sub>2</sub>O<sub>3</sub>, highly effective Ba<sub>3</sub>Si<sub>6</sub>O<sub>12</sub>N<sub>2</sub> green-emitting phosphors were made using a gas reduction nitridation technique under flowing NH<sub>3</sub> gas. We found that the synthesized phosphor is a pure phase of Ba<sub>3</sub>Si<sub>6</sub>O<sub>12</sub>N<sub>2</sub> based on X-ray diffraction patterns. By modifying an alumina boat crystallized, the Ba<sub>3</s

APA, Harvard, Vancouver, ISO, and other styles

42

Morozov, Vladimir, Katrien Meert, Philippe Smet, Dirk Poelman, Artem Abakumov, and Joke Hadermann. "Incommensurate modulated structures and luminescence in scheelites." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C177. http://dx.doi.org/10.1107/s2053273314098222.

Full text

Abstract:

Scheelite (CaWO4) related compounds (A',A'')n[(B',B'')O4]m with B', B''=W and/or Mo are promising new materials for red phosphors in pc-WLEDs (phosphor-converted white-light-emitting-diode) and solid-state lasers. Scheelites can be prepared with a large concentration of vacancies in the A sublattice, giving compositions characterized by a (A'+A''):(B'O4+B''O4) ratio different from 1:1. The creation of cation vacancies in the scheelite-type framework and the ordering of A cations and vacancies are a new factor in controlling the scheelite-type structure and properties. Very often the substituti

APA, Harvard, Vancouver, ISO, and other styles

43

Van De, Pham, and My Hanh Nguyen Thi. "The variety of phosphor Ca2MgSi2O7:Eu2+ emission color affect white light LEDs." Indonesian Journal of Electrical Engineering and Computer Science 38, no. 3 (2025): 1471. https://doi.org/10.11591/ijeecs.v38.i3.pp1471-1478.

Full text

Abstract:

The conventional phosphor-converted white light emitting diode (WLED) suffers from several drawbacks relevant to heat generation and low rendered performance. Thus, using ultraviolet LEDs was introduced as a solution. It is essential to choose the phosphors with high stability that can activated under 350-410 nm to be compatible with the chips. Rare-earth-doped silicate phosphor is among the most reserched materials for solid-state light devices, thanks to its high stability and low-cost production. This work presents the Eu<sup>2+</sup> -doped Ca<sub>2</sub>MgSi<sub

APA, Harvard, Vancouver, ISO, and other styles

44

Phuong Loan, Nguyen Thi, and Nguyen Doan Quoc Anh. "Utilizing CaCO3, CaF2, SiO2, and TiO2 particles to enhance color homogeneity and luminous flux of WLEDs." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 5 (2020): 5175. http://dx.doi.org/10.11591/ijece.v10i5.pp5175-5182.

Full text

Abstract:

The chromatic homogeneity and luminous efficiency are two crucial elements for determining a high-quality phosphor-converted LEDs (pc-LEDs). Thus, this paper provides essential information in choosing the particles to enhance lighting properties of high performance pc-LEDs. Scattering enhancement particles (SEP) such as CaCO3, CaF2, SiO2, and TiO2, are combined with yellow phosphor Y3Al5O12:Ce3+ and applied to the lighting devices. Initially, optical simulations are carried out with the support of LightTools program. Next, the Mie-theory is applied to calculate and confirm the results. The cal

APA, Harvard, Vancouver, ISO, and other styles

45

Nguyen, Thi Phuong Loan, and Doan Quoc Anh Nguyen. "Utilizing CaCO3, CaF2, SiO2, and TiO2 particles to enhance color homogeneity and luminous flux of WLEDs." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 5 (2020): 5175–82. https://doi.org/10.11591/ijece.v10i5.pp5175-5182.

Full text

Abstract:

The chromatic homogeneity and luminous efficiency are two crucial elements for determining a high-quality phosphor-converted LEDs (pc-LEDs). Thus, this paper provides essential information in choosing the particles to enhance lighting properties of high performance pc-LEDs. Scattering enhancement particles (SEP) such as CaCO<sub>3</sub>, CaF<sub>2</sub>, SiO<sub>2</sub>, and TiO<sub>2</sub>, are combined with yellow phosphor Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup> and applied to the lighting devices. Initially, optical simulations are carried out with the support of LightTool

APA, Harvard, Vancouver, ISO, and other styles

46

Oh, Ji Hye, Yun Jae Eo, Hee Chang Yoon, Young-Duk Huh, and Young Rag Do. "Evaluation of new color metrics: guidelines for developing narrow-band red phosphors for WLEDs." Journal of Materials Chemistry C 4, no. 36 (2016): 8326–48. http://dx.doi.org/10.1039/c6tc02387h.

Full text

Abstract:

In this review, we summarize the recent findings on novel narrow-band red phosphors, the improved color and visual energy properties of these phosphors, and their ability to improve the optical properties of corresponding warm white pc-WLED lightings.

APA, Harvard, Vancouver, ISO, and other styles

47

Thinh, Cong Tran, Doan Quoc Anh Nguyen, and Thi Phuong Loan Nguyen. "Comparison of calcium carbonate and titania particles on improving color homogeneity and luminous flux of WLEDs." TELKOMNIKA Telecommunication, Computing, Electronics and Control 18, no. 5 (2020): 2690~2695. https://doi.org/10.12928/TELKOMNIKA.v18i5.13552.

Full text

Abstract:

In this paper, the experiments on phosphor-converted LEDs (pc-LEDs) with a correlated color temperature (CCT) of 8500K has been conducted with the scattering enhancement particles (SEPs) to achieve the higher color uniformity and emitted luminous flux of pc-LEDs. Moreover, this paper also introduced about choosing scattering enhancement particles (SEPs), including calcium carbonate (CaCO3) and titania (TiO2), and compared these particles’ properties by adding them into the yellow Y3Al5O12:Ce3+ phosphor compounding. Afterward, the LightTools program was applied to illustrate the optical s

APA, Harvard, Vancouver, ISO, and other styles

48

Huu, Phuc Dang, Phung Ton That, and Phan Xuan Le. "A new Ca15(PO4)2(SiO4)6:Eu2+ phosphor with green emission for use in n-UV based WLEDs." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 3 (2022): 1276–81. https://doi.org/10.11591/ijeecs.v27.i3.pp1276-1281.

Full text

Abstract:

We have produced a novel phosphor using Eu<sup>2+</sup>, which is green in color coupled to Ca<sub>15</sub>(PO4)<sub>2</sub>(SiO<sub>4</sub>)<sub>6</sub> (abbreviated as Ca<sub>15</sub>P<sub>2</sub>Si<sub>6</sub>) by deriving it structurally from α-Ca2SiO4 with a typical solid reaction method. Additionally, the decrease of Eu<sup>2+</sup> concentration as well as heat endurance is being studied. 330 nm is the wavelength at which the substance is stimulated. At 491 nm, it attains the greatest radiation energy when filled with the ideal concentration of Eu<sup>2+</sup>, which is 0.5 mol%.

APA, Harvard, Vancouver, ISO, and other styles

49

Ly, Thanh Binh, Phung Ton That, and Phan Xuan Le. "Effects of titanium dioxide quantum dots on the color deviation and luminous flux of white light-emitting diodes." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 2 (2022): 611–17. https://doi.org/10.11591/ijeecs.v27.i2.pp611-617.

Full text

Abstract:

The application of quantum dots has been considered as a promising approach to the advancement of phosphor-converted light-emitting diodes (pc-LEDs) since they perform an excellent extinction coefficient. Yet, it is challenging to manage their influences on the optical properties of LEDs due to their different nanometers in size. Hence, the object of this research is to analyze the influences of quantum dot (QDs) to figure out the solution to control the enhancement of LED lighting performances. Particularly, the study worked on investigating the scattering and absorption features of titanium

APA, Harvard, Vancouver, ISO, and other styles

50

Huo, Xiaoxue, Zhijun Wang, Xue Meng, Jiawei Zhang, Yu Wang, and Panlai Li. "Structure tailoring and defect engineering of a highly thermally stable red emitting phosphor." Journal of Materials Chemistry C, 2024. http://dx.doi.org/10.1039/d4tc00144c.

Full text

Abstract:

Phosphor-converted white light-emitting diodes (pc-WLEDs) are highly efficient light sources for lighting displays and electronic devices. To facilitate the development of next-generation high-power WLEDs, it is crucial to investigate more...

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!