Relevant bibliographies by topics / PC-LEDs

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'PC-LEDs'

Author: Grafiati
Published: 11 September 2023
Last updated: 31 July 2025

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Journal articles on the topic "PC-LEDs"

1

Nguyen Thi, My Hanh, Nguyen Thi Phuong Loan, and Hoang Van Ngoc. "Enhancing light scattering effect of white LEDs with ZnO nanostructures." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (2021): 3838. http://dx.doi.org/10.11591/ijece.v11i5.pp3838-3843.

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Pc-LEDs, the lighting method that blends blue LED light with yellow light from phosphor to discharge white radiation, is one of the most advance known for high lumen output. However, pc-LEDs has inferior due to angular CCT deviation, which prevent pc-LEDs from reaching better performance. As a result, this research is conducted to address the need of pc-LEDs development by introducing a configuration doped with ZnO nanoparticles. The finite-difference time-domain (FDTD) method and the phosphor layer containing ZnO were applied in the experiments. The effect of ZnO-filled on the performance of
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My, Hanh Nguyen Thi, Thi Phuong Loan Nguyen, and Van Ngoc Hoang. "Enhancing light scattering effect of white LEDs with ZnO nanostructures." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (2021): 3838–43. https://doi.org/10.11591/ijece.v11i5.pp3838-3843.

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Pc-LEDs, the lighting method that blends blue LED light with yellow light from phosphor to discharge white radiation, is one of the most advance known for high lumen output. However, pc-LEDs has inferior due to angular CCT deviation, which prevent pc-LEDs from reaching better performance. As a result, this research is conducted to address the need of pc-LEDs development by introducing a configuration doped with ZnO nanoparticles. The finite-difference time-domain (FDTD) method and the phosphor layer containing ZnO were applied in the experiments. The effect of ZnO-filled on the performance of
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3

Lei, Po-Hsun, Po-Chun Yang, and Po-Chun Huang. "Investigation of Photonic-Crystal-Structured p-GaN Nanorods Fabricated by Polystyrene Nanosphere Lithography Method to Improve the Light Extraction Efficiency of InGaN/GaN Green Light-Emitting Diodes." Materials 14, no. 9 (2021): 2200. http://dx.doi.org/10.3390/ma14092200.

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We fabricated the photonic-crystal-structured p-GaN (PC-structured p-GaN) nanorods using the modified polystyrene nanosphere (PS NS) lithography method for InGaN/GaN green light-emitting diodes (LEDs) to enhance the light extraction efficiency (LEE). A modified PS NS lithography method including two-times spin-coating processes and the post-spin-coating heating treatment was used to obtain a self-assembly close-packed PS NS array of monolayer as a mask and then a partially dry etching process was applied to PS NS, SiO2, and p-GaN to form PC-structured p-GaN nanorods on the InGaN/GaN green LEDs
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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.

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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
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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.

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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
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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.

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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
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My, Hanh Nguyen Thi1, and Ton That Phung. "The analysis of MF resin and CaCO3 diffuser-loaded encapsulations to enhance the homogeneity of correlated color temperature for phosphor-converted LEDs." TELKOMNIKA Telecommunication, Computing, Electronics and Control 19, no. 2 (2021): pp. 608~615. https://doi.org/10.12928/TELKOMNIKA.v19i2.16519.

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The most popular method used in the production of phosphor-converted LEDs (pc-LEDs) is dispensing phosphor freely. However, this method is inferior in generating good angular correlated color temperature (CCT) homogeneity. Thus, in this article, a diffuser-loaded encapsulation is proposed as a potential solution for better CCT uniformity. The paper provides a detailed investigation on how melamine formaldehyde (MF) resin and CaCO3 loaded encapsulations impact the uniformity of CCT, as well as the lumen efficacy of pc-LEDs. The results demonstrate that between MF resin and CaCO3 loaded encapsul
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Bauer, Stefan. "Blue-Light Hazard of Light-Emitting Diodes Assessed with Gaussian Functions." International Journal of Environmental Research and Public Health 18, no. 2 (2021): 680. http://dx.doi.org/10.3390/ijerph18020680.

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The high blue proportion of phosphor-conversion white-light emitting diodes (pc-LEDs), especially of those with higher correlated color temperatures (CCT), raises concern about photochemically induced retinal damages. Although almost all general lighting service LEDs are safe, other applications exist, like spotlights for theatres or at construction sites, that can pose a severe blue-light hazard (BLH) risk, and their photobiological safety must be assessed. Because of required but challenging radiance measurements, a calculative approach can be supportive for risk assessment. It is the aim of
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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.

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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
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Lee, Hoyoung, Sungho Cho, Jongguk Lim, et al. "Performance Comparison of Tungsten-Halogen Light and Phosphor-Converted NIR LED in Soluble Solid Content Estimation of Apple." Sensors 23, no. 4 (2023): 1961. http://dx.doi.org/10.3390/s23041961.

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A Tungsten-Halogen (TH) lamp is the most popular light source in NIR spectroscopy and hyperspectral imaging, which requires a warm-up to reach very high temperatures of up to 250 °C and take a long time for radiation stabilization. Consequently, it has a large enough volume to enable heat dissipation to prevent the thermal runaway of the electric circuit and turn out its power efficiency very low. These are major barriers for miniaturizing spectral systems and hyperspectral imaging devices. However, TH lamps can be replaced by pc-NIR LEDs in order to avoid high temperature and large volume. We
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Dissertations / Theses on the topic "PC-LEDs"

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KAUR, HARPREET. "OPTIMIZATION OF LUMINESCENT FEATURES IN MULTICOLOR EMITTING RARE EARTH DOPED ALKALINE EARTH VANADATE PHOSPHOR FOR SOLID STATE LIGHTING APPLICATIONS." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18694.

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Recent advances in solid state lighting (SSL) technology have encouraged its utilization in versatile applications. SSL technology based on phosphor converted light emitting diodes (pc-LEDs) are acting potentially as a substitute for traditional incandescent and fluorescent lamps on an account of their unprecedented luminous efficiency, low energy consumption, less emission of harmful gases, high brightness, compact design, fast switching and long working lifetimes. The pc-LEDs utilize phosphors coated on the LED chip capable of emitting light in desirable spectral regions upon an approp
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Myint, Cho Zin. "A new electronic device for measuring pulse and oxygen concentration." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/1788.

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Sensor devices such as pulse oximetry are practical tools used by most healthcare professionals, and even patients. An electronic sensor device that has the capability to measure physiological signs of saturation of arterial oxygen (SpO2) and heart beat rate of the human body has been developed in this study.The hardware design of the sensor device consists of a microcontroller PIC18F452, an external flash memory, and a transceiver unit. The most suitable sensors of red and infra red LEDs are installed on the arms of the plastic clip and functioned with the right resistor values. The red and i
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Book chapters on the topic "PC-LEDs"

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Nguyen, Hoang-Duy, Mano Bala Sankar Muthu, and Hieu Pham Trung Nguyen. "Phosphor-Converted III-Nitride Nanowire White Light-Emitting Diodes." In Nanoelectronic Devices and Applications. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815238242124010005.

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III-nitride nanowire light-emitting diodes (LEDs) have emerged as the nextgeneration solid-state lighting technology. Currently, white-light LEDs rely on the phosphor-converted white LED (pc-WLEDs) technology, which normally depends on the mixture of blue/ultraviolet emitters and green/yellow/red color-converters. In this chapter, a summary of current research progress on nanophosphors and their applications in improving the device performance of InGaN nanowire pc-WLEDs in terms of color rendering properties and optical and electrical characteristics is presented. These investigations have con
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Nagamatsu, Takashi, Michiya Yamamoto, and Hiroshi Sato. "MobiGaze." In Cognitively Informed Intelligent Interfaces. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1628-8.ch004.

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Today, touch-screen-based handheld mobile devices are widely used; however, they are awkward to use with one hand. We propose MobiGaze, which is a user interface that uses one’s gaze to operate a handheld mobile device. By using MobiGaze, one can target the entire display area easily, even when the device is quite large. Moreover, MobiGaze can use both gaze and touch interactions. The combination of gaze and touch becomes a novel interaction paradigm. A gaze-and-touch interface effectively avoids the Midas-touch problem. The authors adopted a gaze-tracking method that uses a stereo camera to d
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Singh, Naorem Premjit, and Yengkhom Rangeela Devi. "An Introduction to the Fabrication of White Lightemitting Diodes." In Advanced Materials and Nano Systems: Theory and Experiment (Part 3). BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815223101124030007.

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Light-emitting diodes, especially white light-emitting diodes are very attractive and fascinating lighting sources at this present time because they have the potential for high energy saving and environmental friendliness as compared to conventional lighting sources such as incandescent and fluorescent lamps and also have wide applications in a variety of fields including in lighting, architectural and medical etc. Among the various applications, the lighting sector is one of the most important fields because it consumes a large amount of electricity. About 15-22% of total electricity producti
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Conference papers on the topic "PC-LEDs"

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Poria, Kanishk, Nisha Deopa, and Jangvir Singh Shahi. "Enhanced Red Emission in Europium-Doped Niobate Phosphors for High-Efficiency Warm White LEDs." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.17a_a34_8.

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Rare-earth doped crystalline materials are of significant interest for photonic and optoelectronic applications, particularly in phosphor-converted white-light-emitting diodes (pc-WLEDs), which offer high brightness, energy efficiency, compact size, durability, and environmental friendliness. However, pc-WLEDs lack a red color component. To address this, europium-doped niobate-based phosphors were synthesized using a high-temperature solid-state reaction technique at 1300°C[1].
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Yu, J. H., Wouter Oepts, and Huub Konijn. "PC Board Thermal Management of High Power LEDs." In 2008 Twenty-fourth Annual IEEE Semionductor Thermal Measurement and Management Symposium. IEEE, 2008. http://dx.doi.org/10.1109/stherm.2008.4509368.

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Radkov, Emil, Zena Brown, Ilona Hausmann, and James Reginelli. "Performance of white PC LEDs based on violet chips." In SPIE Optics + Photonics, edited by Ian T. Ferguson, Nadarajah Narendran, Tsunemasa Taguchi, and Ian E. Ashdown. SPIE, 2006. http://dx.doi.org/10.1117/12.679482.

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Da Zhou, Haibo Rao, Qiaolin Lei, Xuemei Wang, and Xianlong Wan. "A new coating configuration with two phosphor layers laminated for white PC-LEDs." In 2013 10th China International Forum on Solid State Lighting (ChinaSSL). IEEE, 2013. http://dx.doi.org/10.1109/sslchina.2013.7177302.

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Qiaolin Lei, Haibo Rao, Xuemei Wang, Da Zhou, Xianlong Wan, and Linsong Zhou. "Self-adaptive remote phosphor coating for pc-LEDs packaging by self-exposure slurry method." In 2013 10th China International Forum on Solid State Lighting (ChinaSSL). IEEE, 2013. http://dx.doi.org/10.1109/sslchina.2013.7177304.

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ALMEIDA, BRUNO FACCO, THAíS ERTMANN BOLZAN, MARCELO WEBER CONTRI, and VITOR CRISTIANO BENDER. "Integração dos Conversores Buck-Boost e Forward para Acionamento de Leds Visando Aplicações de Iluminação Circadiana." In Seminar on Power Electronics and Control (SEPOC 2021). sepoc, 2021. http://dx.doi.org/10.53316/sepoc2021.051.

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Este artigo detalha o procedimento de integração, incluindo projeto e simulação, de um conversor Buck-Boost atuando na correção do fator de potência (PFC) e de um conversor Forward como controlador de potência (PC). O circuito de conversores integrados é responsável por alimentar uma carga de LEDs que emitem luz de temperatura de cor distinta, possibilitando aplicações de iluminação circadiana. Resultados são mostrados a partir da análise das formas de onda utilizando o software PSIM, no qual foi observado boa correspondência entre os resultados teóricos e de simulação, validando o projeto pro
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Kim, Seungtaek, Kyeongyong Cho, Hyungtae Kim, Jongseok Kim, and Youngjune Cho. "The effects of SCM and PWM on the chromaticity and the spectrum of PC white LEDs." In 2012 International Symposium on Optomechatronic Technologies (ISOT 2012). IEEE, 2012. http://dx.doi.org/10.1109/isot.2012.6403266.

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Kumar, Sachin, Sreejita Gupta, Aishwaryapriya Auddy, Ankita Bose, A. Chakraborty, and R. Ganguly. "Comparative description on the workings of High Power PC LEDs and its useful life under tropical conditions." In 2016 IEEE 7th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON). IEEE, 2016. http://dx.doi.org/10.1109/iemcon.2016.7746369.

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Li, Ting, Haibo Rao, Weibing Zheng, and Qinghao Meng. "The effects on the growth of pea seedlings under different red and blue photons ratio Pc-LEDs lighting." In 2017 14th China International Forum on Solid State Lighting: International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS). IEEE, 2017. http://dx.doi.org/10.1109/ifws.2017.8245978.

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Wang, Kai, Fei Chen, Zongyuan Liu, Xiaobing Luo, and Sheng Liu. "Novel Application-Specific LED Packages Integrated With Compact Freeform Lens." In ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability. ASMEDC, 2009. http://dx.doi.org/10.1115/interpack2009-89335.

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It has been widely accepted that solid state lighting, in terms of white light emitting diodes (LEDs), will be the fourth illumination sources due to their superior performance. In this study, an effective compact freeform lens design method for LED packaging was introduced. A compact silicone LED packaging lens with the refract index of 1.54 was designed for street lighting based on this method. Integrated with this small lens, a novel application-specific LED package, whose manufacturing process can be easily integrated into current LED packaging processes, was suggested. Two application-spe
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