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Dissertations / Theses on the topic 'Blue green IR light'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Snowden, Michael Chase. "Effects of Blue and Green Light on Plant Growth and Development at Low and High Photosynthetic Photon Flux." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4613.

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The optimal combination of wavelengths of light (spectral quality) for single leaf photosynthesis has been well characterized, but spectral quality is not well characterized in whole plants in long-term studies. Here we report the effects of eight light spectra at two photosynthetic photon fluxes (200 and 500 µmol m-2 s-1) on dry mass, leaf area index and net assimilation of seven species in replicate 21-day studies. The combination of treatments allowed us to separately assess the effects of blue and green light fraction among species and PPF. At a PPF of 500, increasing blue light from 11 to

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McCoshum, Shaun Michael. "SPA1: A Protein Involved with Photoresponses Incited by Red and Green Light." Oxford, Ohio : Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1249975178.

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3

Hendrikse, Egbert Johannes. "Influence of blue/green versus red and white light sources on human dark adaptation and other selected visual functions." Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1009497.

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Red interior lighting used to preserve dark-adaptation needs to be replaced in military applications by blue/green lighting which is not detectable by 3rd-generation image intensifiers. This study investigated the influence of blue/green as compared to red and white light of equal photopic intensity on subsequent visual acuity , contrast sensitivity and dark-adaptation. Male subjects (n = 90) were assigned to one of 15 treatment conditions (n = 6) as determined by the colour (blue/green, red or white) and intensity (0.1; 0.4; 1.6; 6.4 and 25.6 cd/m²) of the pre-adaptation stimuli. A modified G

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Füldner, Stefan [Verfasser], and Burkhard [Akademischer Betreuer] König. "Blue- and green-light-induced reductions and C-C bond formations with TiO2 and PbBiO2X / Stefan Füldner. Betreuer: Burkhard König." Regensburg : Universitätsbibliothek Regensburg, 2010. http://d-nb.info/1023281872/34.

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Bohuslawsky, John Victor. "Effects of colored light on movement: how red, yellow, green, and blue colored lights affect movement as perceived by an audience." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1321891693.

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6

Subramanian, Arunkumar. "Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659.

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7

Andrijasevic, Neda, and Mirjam Johansson. "Digital Compositing for Photorealism and Lighting in Chroma key film studio." Thesis, Högskolan i Jönköping, Tekniska Högskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-19845.

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Photorealism is what visual effects are all about most of the time. This report entails digital compositing and studio lighting, in relation to Chroma key film material, aimed to give a photorealistic impression. One of the identified problems in this report is that compositors may get Chroma key footage where the lighting is done poorly, which means a lot of extra work for the compositors and it might even make it impossible to create the desired end result. Another problem recognized is that the knowledge that these professions possess is often tacit, not available in texts or even fun

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8

Barker, Julie A. "Improvement of Conspicuity for Trailblazing Signs." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36631.

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This document represents efforts to design and evaluate a new sign design for emergency route trailblazing in a two-part series. Study 1 was an off-road field experiment conducted to determine the best color combination and letter design for the emergency sign. Based upon Study 1 results, black on coral, black on light blue, and yellow on purple signs were chosen for further testing against a baseline black on orange sign, all with 125-mm, D series letters. Study 2 was an on-road field study of conspicuity, conducted using an instrumented vehicle through a construction zone-related detour,

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Makambila, Casimir. "Etude de l'anthracnose du manioc (manihot esculenta crantz) et son agent pathogene colletotrichum gloeosporioides penz f. Sp. Manihotis henn." Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2E385.

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L'agressivite des souches de colletotrichum manihotis varie d'une souche a une autre et les cultivars de manioc inocules sont plus ou moins sensibles au champignon. La temperature et la lumiere exercent une action sur l'infection des tiges. In vitro la lumiere stimule ou inhibe, selon les temperatures la croissance en longeur des hyphes et la conidiogenese. Les radiations bleues, vertes et jaunes inhibent la croissance a 32 non=c. , les radiations rouges stimulent la croissance a des temperatures comprises entre 20 et 28 non=c. La conidiogenese est inhibee a 20 non=c. Et stimulee a partir de 2

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Noordhuis-Fairfax, Sarina. "Field | Guide: John Berger and the diagrammatic exploration of place." Phd thesis, Canberra, ACT : The Australian National University, 2018. http://hdl.handle.net/1885/154278.

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Positioned between writing and drawing, the diagram is proposed by John Berger as an alternative strategy for articulating encounters with landscape. A diagrammatic approach offers a schematic vocabulary that can compress time and offer a spatial reading of information. Situated within the contemporary field of direct data visualisation, my practice-led research interprets Berger’s ‘Field’ essay as a guide to producing four field | studies within a suburban park in Canberra. My seasonal investigations demonstrate how applying the conventions of the pictorial list, dot-distribution map, routing

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Yeh, Rong-Hwei, and 葉榮輝. "Green-blue porous silicon light-emitting diodes." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/14347523899603552569.

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碩士<br>國立中央大學<br>電機工程學系<br>85<br>In this work, the porous silicon (PS) was used to fabricate porous siliconlight-emitting diodes (PS-LED). The PL (photoluminescence) spcetrum of the usedporous silicon having PS without oxidation had three peaks at about 660, 465, and 404 nm, respectively. The PL spectrum of PS was blue-shifted after the PSsample was oxidized at a high temperature around 950^oC. The first p(PS)-n-i-p-n(a-Si:H) PS-LED with unoxidized had an EL (electroluminescence) threshold v

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Yeh, Ting-Wei, and 葉丁瑋. "The Application of Optical Coatings to Blue/Green Light Emitting Diodes." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/34558372697562325270.

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碩士<br>國立中央大學<br>光電科學研究所<br>89<br>In this dissertation, we try to improve light extraction of blue/green light emitting diodes (LEDs) by means of optical coatings. For the purpose of extracting light inside LEDs, we focus on two topics, topside of LEDs with antireflective layers and bottom side of LEDs with reflectors. On topside of LEDs, the difference of refractive index between GaN (about 2.4) and air (1) is large, so the percentage of transmission is lowered. SiO2, Al2O3, SiNX is coated on the topside of InxGa1-xN/GaN LEDs as passivation and/or antireflective layer. According to

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Zhang, Yeong-Chang, and 張永昌. "Quasi-Phase-Match Double Frequency Generation of Blue and Green Light Lasers." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/03391209990060016613.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>89<br>This dissertation is organized into three sections: (1) zinc oxide (ZnO) doping effects in congruent grown lithium niobate (LiNbO3), (2) fabrication of periodically-poled lithium niobate (PPLN) by pulsed voltage, (3) optical measurement of second harmonic generation (SHG) on quasi-phase matched PPLN. It is found that doping of zinc oxide in congruent grown lithium niobate will reduce the internal and coercive field in the poling process and increase the optical damage resistance. The polarization switching field is found to decrease with the Zn

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Liao, Chien Lan, and 廖健嵐. "The Development of GaN-Based High-Speed Blue/Green Light Emitting Diodes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/57494190552310145273.

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博士<br>國立清華大學<br>電子工程研究所<br>103<br>In this dissertation, we have demonstrated GaN-based high-speed Light-emitting diodes (LEDs). In recently, LEDs is one of the most important light sources due to its low power consumption and long lifetime. We use its natural feature to get a high modulation bandwidth. We present the high-frequency characteristics of GaN-based blue and green LEDs with different aperture diameters. In order to get higher current density, we use ring-shaped electrode to conﬁne the current injection. Through appropriate device design, gallium-doped Zinc oxide ﬁlm deposited by ato

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Shieh, Yu-Lin, and 謝育霖. "Application of Textured Coatings to Surface Structure of Blue/Green Light Emitting Diodes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/10907310356528492077.

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碩士<br>長庚大學<br>光電工程研究所<br>95<br>Abstract LED one semiconductor component that can luminesce, it is small, consuming power low and having long performance life etc. It seems that structure of LED of today has not had too great change yet. But high efficiency LED uses more and more extensive, so the one that begin to how to increase efficiency is more important. Because of improved epitaxial growth and advanced process technology, the quantum efficiencies of GaN-based LEDs are increased. However, the external quantum efficiencies are less significantly than that based on GaAs. One of the reasons

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Wang, Yen-Po, and 王彥博. "Highly Efficient Organic Light-Emitting Diodes with Green and Sky-blue Iridium Complexes." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7dvj4h.

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碩士<br>元智大學<br>光電工程學系<br>106<br>Phosphorescent organic light-emitting diodes (OLEDs) have been under intensive investigations in recent years because phosphorescent OLEDs (PhOLEDs) can utilize both singlet and triplet excitons, whereas fluorescent organic light-emitting diodes (OLEDs) can use only singlet excitons. The quantum efficiency of PhOLEDs can reach 100%, however, the quantum efficiency of fluorescent OLEDs can only reach 25%. For this reason, theoretically, the quantum efficiency of PhOLEDs could be higher by four times than that of fluorescent OLEDs. In this thesis, we focused on the

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Ho, Hung-Wei, and 何弘偉. "High efficiency Red, Green and Blue light generated by white OLED with microcavity structure." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/58482408655181742105.

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碩士<br>國立成功大學<br>光電科學與工程研究所<br>96<br>Organic light-emitting diodes with microcavity structure is a new structure device. Red、Green and Blue light generated by white OLED with microcavity structure can reduce loss and improve the pure level of three primary color. In general, the microcavity structure was made up of two metal electrodes, the energy loss is higher as a result of the higher absorption coefficient. This research uses distributed bragg reflector to take the place of metal reflector is because of distributed bragg reflector is made up of dielectric material which has lower absorption

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Jhih-HongHong and 洪志宏. "The Study of Blue-Green Light GaN/InGaN MQWs MSM Photodetectors with Recessed Electrodes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/86796598761879064794.

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Zhuang, Dao-Wu, and 莊道武. "Enhancement in efficiency of blue-green polymer light emitting diodes with a double-blocking layer structure." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/25088204106644490420.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>96<br>We demonstrated the properties of blue-green polymer light-emitting diodes (BGPLEDs). In the device configuration of ITO/PEDOT:PSS (9000 rpm)/PVK (7000 rpm) /PFO:OPA3008 (0.7 wt%, 4500 rpm)/BCP (0.2 nm)/Alq3 (10 nm)/LiF (2.5 nm)/Al (150 nm). By changing the spin speed for the PEDOT:PSS coating, a better charge balance result in the recombination zone and a improved a performance could be obtained. An PVK layer was use as an electrons blocking and holes transporting layer. The Alq3 is used to as the help electron injection into the PFO:OPA3008 layer fr

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HaO-ChuanChang and 張皓筌. "Theoretical Analysis and Development of GaN/InGaN Blue-Green Light Micro-disk Whisper Gallery Mode Lasers." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/zvv233.

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21

Chang, Wen-Kai, and 張文凱. "High efficiency and luminance of blue-green organic light-emitting diode based on single co-doping layer." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/32348621184861997033.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>95<br>A high efficiency and luminance of blue-green organic light-emitting diode (BGOLED) was successfully fabricated using the structure of ITO/NBP (50 nm)/LT-N421:C6 (0.4 wt%, 32 nm)/DPVBi (8 nm)/ Alq3 (20 nm)/LiF (1 nm)/Al (200 nm). Adding a DPVBi layer between the emission layer (EML) and electron transporting layer (ETL), a better charge balance in the recombination zone and a improved a performance could be obtained. DPVBi is not only used as the blue emission layer but also helps electrons injection into the LT-N421 layer from the Alq3 and avoids hol

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Chung, Te-Cheng, and 鍾德鎮. "Optoelectronic Characteristics of Green-Blue-White a-SiN:H-Based p-i-n Thin-Film Light-Emitting Diodes (TFLEDs)." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/58567408363936265701.

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碩士<br>國立中央大學<br>電機工程學系<br>86<br>In order to blue-shift the electroluminescence (EL) peak wavelength of anamorphous p-i-n thin-film light-emitting diode (TFLED), a higher optical-gapmaterial, a-SiN:H, was used as the luminescent i-layer. Further, to improve the device EL properties, the same material (a-SiN:H) was employed to from thep-i and n-i brightness of a finished device, having a n+-a- Si:H layer contactedwith the Al external electrode , was 200cd/ m2 at an injection current density o

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Lai, Wei-Chih, and 賴韋志. "The growth and fabrication study of the III-Nitride semiconductors blue and green light emitting diode by MOVPE." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/38761179652714603307.

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博士<br>國立成功大學<br>電機工程學系<br>89<br>The growth and fabrication study of the III-Nitride semiconductors blue and green light emitting diode by MOVPE Wei-Chih Lai*, Shoou-Jinn Chang** and Meiso Yokoyama** Department of Electrical Engineering National Cheng Kung University, Tainan, Taiwan, R. O. C. Abstract In this dissertation, the characteristics of the III-V nitride semiconductors had been studied. We first implanted Si into p-GaN, and activated the implanted Si so as to convert the electrical conduction of GaN from p-type to n-type by convent

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HSU, YU-HSIANG, and 徐鈺翔. "Investigating Opto-Electronic and Temperature-Dependence Properties of Nitride-Based Blue, Green and Near Ultraviolet Light-Emitting Diodes." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/76591277399646357192.

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碩士<br>南臺科技大學<br>電子工程系<br>105<br>In this research, we investigated multiple quantum well with different indium composition of Green, Blue and Near Ultraviolet light-emitting diodes. The molar composition of three LEDs are GaN/In0.4Ga0.6N, GaN/In0.23Ga0.77N, and Al0.07Ga0.93N/In0.1Ga0.9N, respectively. Following, we will measure and discuss the optical properties and temperature-dependence. The measurements result of light output power, external quantum efficiency and efficiency droop show Green LED has worst optical properties. Because Green LED has the worst QCSE effect which caused by high in

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Jian, Shi Yun, and 簡詩芸. "On the Bright Characteristics Investigation of Liquid Encapsulated Red/Green/Blue/Ultraviolet Light-Emitting Diodes on AlN Substrates." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/49k4h5.

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碩士<br>長庚大學<br>光電工程研究所<br>105<br>In this study, we use transparent and odorless transformer oil as the heat dissipation liquid. The use of liquid is for the purpose of effective dissipation the heat generated by LED which can and increase the output flux. In order to understand this oil enhancement phenomenon, there will be a series of absorption measurement at different wavelength by UV-VIS (relative to the air). At study process, the EPISTAR Red/green/blue chips and AOT UV chips are adopted as the light sources, silver conducting adhesive as the adhesion agent to attach the LED chip on the Al

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Cheng, Chih-Hang, and 鄭智航. "Effects of Red, Blue and Green Light-emitting Diodes on The Growth and Development of Lettuce and Orchid." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/9k445t.

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碩士<br>國立虎尾科技大學<br>生物科技研究所<br>103<br>In this study, effect of different light sources including red (R), blue (B) and green light-emitting diode (LED) lights on the growth and development of lettuce (Lactuasativa L. var. crispa L.), orchid (Phalaenopsis amabilis) and disease resistant of Chinese cabbage (Brassica rapa chinensis), were evaluated. In lettuce test, photosynthetic photon flux (PPF), photoperiod, and air temperature (light/dark) was conducted to 400 μmol/m2/s, 20 hr, and 28/25 ℃ under different light sources such as, R 70% + B 30% (LED, 7R3B), R 52.5% + B 22.5% + G 25% (LED, RGB) an

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Syuan-JhihGong and 龔軒志. "The Synthesis of Blue-Green Silicate Phosphors and their Applications in White Light-Emitting Diodes with High CRI Values." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/dqmus5.

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碩士<br>國立成功大學<br>電機工程學系<br>102<br>In this study, Ba1-xSrxZrSi3O9:Eu2+ and Ba2MgSi2O7:Eu2+ silicate phosphors were synthesized, which could be well excited by near-ultraviolet (near-UV) lights by the solid-state reaction. The emission wavelength of the former red shifted from 477 to 483 nm with increase of Sr2+ content and the latter was at 508 nm, both of them exhibited good thermal stability with T50 〉 140oC. The external quantum efficiency of optimized Ba0.5Sr0.4ZrSi3O9:0.1Eu2+ and Ba1.94MgSi2O7:0.06Eu2+ were 44.14% and 35.64% under 405-nm excitation, respectively. The pc-WLEDs were fabricat

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KAO, SHU-HSIEN, and 高書賢. "Study of the Optical , Temperture-Dependence and Response Characteristics of Green, Blue, and Ultraviolet Nitride-Based Light-Emitting Diodes." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vt72h8.

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碩士<br>南臺科技大學<br>電子工程系<br>106<br>n this study, nitride-based green, blue, and ultraviolet light-emitting diodes (LEDs) were fabricated and investigated. The emission wavelength of VG, VB, VV, VU, and VD of the LEDs are 520, 450, 420, 390, and 370 nm, respectively. Then, the optical, temperture-dependence and response properties of the LEDs will be discussed. We analyze the light output power (LOP), external quantum efficiency (EQE), and normalized EQE of the LEDs for five samples , respectively. VB and VV exhibit better LOPs and EQEs, which can be attributed to carrier localization state effect

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Chang, Che Ming, and 張哲銘. "The new design with mixing R.G.B. LED(Red,Green,Blue Light EmittingDiode) for modern LCD(Liquid Crystal Displsay ) backlight system." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/84944219590946823096.

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碩士<br>國立高雄第一科技大學<br>光電工程研究所<br>94<br>ABSTRACT LED(Light Emitting Diode) backlight module for LCD(Liquid Crystal Displsay ) backlight system has its advantages of color saturation, electricity savings and environmental frienldiness,etc. However , white LED(Light Emitting Diode) is not popular and widely used at this moment due to blue light spectrum weights most of all over spectrum range, which degrade color saturation. Therefore, R.G.B LED(Red,Green,Blue Light Emitting Diode) light source plays significant role at modern LCD(Liquid Crystal Displsay ) backlight system. The paper proposes a new

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Yu, Cheng Han, and 余政翰. "The improvement of the operated lifetime in solution-process green phosphorescence organic light-emitting diode and the fabrication of large-area blue fluorescence organic light-emitting diode." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/9bz6de.

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碩士<br>國立清華大學<br>光電工程研究所<br>103<br>In this study, blade-only solution process is used to manufacture small area green phosphorescence organic light-emitting diode. Not only do we change the device structure, but also select different material to prolong the operated lifetime of the device. We start with researching the triple-layer organic light-emitting diode. In order to prevent the charge accumulation between organic layers solving the problem about charge unbalance, we reduce number of organic layers to form single-layer structure. In addition to this, the device coated with a thin layer of

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Skálová, Kateřina. "Modulace cirkadiánního rytmu v produkci melatoninu člověka navozenými experimentálními světelnými podmínkami." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-388411.

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The circadian system controls the timing of most of the physiological functions and behaviour within approximately 24 hours period. The light/dark cycle aligns this circadian period with the exact length of the solar day. Light information is conveyed via ipRGC cells in the retina, with maximum sensitivity in the blue part light (460-480nm wavelength). The information proceeds to the main circadian clocks located in the suprachiasmatic nuclei. This clock regulates the synthesis of neurohormone melatonin in the pineal gland whose high night level can be rapidly downregulated by the light at nig

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