Academic literature on the topic 'LEDs'

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Journal articles on the topic "LEDs"

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Schiermeister, Norbert, Lukas Schwenkschuster, Detlef Decker, and Karsten Eichhorn. "LEDs." ATZ worldwide 105, no. 9 (2003): 6–8. http://dx.doi.org/10.1007/bf03224619.

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Park, Jongwoon, Taehyun Ban, and Daehyuk Choi. "Organic LEDs Combined With Inorganic LEDs." Journal of Lightwave Technology 29, no. 18 (2011): 2684–89. http://dx.doi.org/10.1109/jlt.2011.2161975.

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Hwang, Do-Hoon, Beng Sim Chuah, Xiao-Chang Li, et al. "New luminescent polymers for leds and LECS." Macromolecular Symposia 125, no. 1 (1998): 111–20. http://dx.doi.org/10.1002/masy.19981250109.

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Chien, Ming-Chin, and Chung-Hao Tien. "Cluster LEDs mixing optimization by lens design techniques." Optics Express 19, S4 (2011): A804. http://dx.doi.org/10.1364/oe.19.00a804.

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Zhu, L., A. Ge, Z. Ge, R. Hao, J. Chen, and X. Tao. "A Fresnel freeform surface collimating lens for LEDs." Lighting Research & Technology 50, no. 6 (2017): 952–60. http://dx.doi.org/10.1177/1477153517712780.

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This paper proposes a freeform surface lens design based on the Fresnel model to achieve a compact structure and good collimation. A simulation indicates the lens enjoys an efficiency as high as 88.43% within a half view angle of 2° for 1 × 1 mm2 size LED. This paper makes a comparison of three types of lens, among which the Fresnel freeform lens achieves the best performance when the LED size is smaller than 2.5 × 2.5 mm2. The influence of the LED size and the manufacturing tolerances are discussed.
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Friend, Richard H., Dawei Di, Samuele Lilliu, and Baodan Zhao. "Perovskite LEDs." Scientific Video Protocols 1, no. 1 (2019): 1–5. http://dx.doi.org/10.32386/scivpro.000008.

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Sir Richard H. Friend is Cavendish Professor of Physics at the University of Cambridge. In the 1990s, he reported for the first time efficient operation of polymer based FET and LED, which contributed to the commercialisation of OLED displays employed in current TV and smartphone devices. He is co-founder of several companies and start-ups including Cambridge Display Technology, Plastic Logic, and Heliochrome limited. In this interview, he and Dr. Dawei Di, who recently joined Zhejiang University in China as a tenure-track professor, discuss recent developments and future prospects of perovski
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Horiuchi, Noriaki. "Building LEDs." Nature Photonics 5, no. 10 (2011): 571. http://dx.doi.org/10.1038/nphoton.2011.246.

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P Caro and Associates Ltd. "Chip LEDs." Displays 7, no. 3 (1986): 142. http://dx.doi.org/10.1016/0141-9382(86)90019-3.

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Reuschling, Ralf, and Armin Wedel. "Organische LEDs." Vakuum in Forschung und Praxis 12, no. 6 (2000): 379–81. http://dx.doi.org/10.1002/1522-2454(200012)12:6<379::aid-vipr379>3.0.co;2-n.

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Kimura, Goro, Toshihiro Kusama, and Hiroyuki Watanabe. "Performance Evaluation of Low Attracting Insects between Sunlight Type LEDs, High CRI LEDs and White LEDs." JAPAN TAPPI JOURNAL 78, no. 4 (2024): 292–94. http://dx.doi.org/10.2524/jtappij.78.292.

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Dissertations / Theses on the topic "LEDs"

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Cheung, Yuk-fai, and 張煜輝. "Phosphor-free multilayered LEDs and thin film LEDs." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50900067.

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The irreversible trend of replacing the conventional incandescence light bulbs and fluorescent tubes with white light emitting diodes (LEDs) aims to use less energy for lighting. Plenty of the commercially available white LEDs are made from blue LED chips with few-micron-thick gallium nitride (GaN) grown on several hundred micron thick transparent sapphire substrates, followed by coating of yellow phosphor powder on top of the chips for converting the emitted blue light to white light. Not only does such approach give the white LEDs a high colour temperature, but also introduces conversion lo
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Nogueira, Fernando José. "Avaliação experimental de luminárias empregando LEDs orientadas à iluminação pública." Universidade Federal de Juiz de Fora, 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/931.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-03-03T11:35:25Z No. of bitstreams: 1 fernandojosenogueira.pdf: 4981583 bytes, checksum: 8b3c5698410b92cb533a1907a012d6a6 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-04-24T01:41:50Z (GMT) No. of bitstreams: 1 fernandojosenogueira.pdf: 4981583 bytes, checksum: 8b3c5698410b92cb533a1907a012d6a6 (MD5)<br>Made available in DSpace on 2016-04-24T01:41:50Z (GMT). No. of bitstreams: 1 fernandojosenogueira.pdf: 4981583 bytes, checksum: 8b3c5698410b92cb533a1907a012d6a6 (MD5) Previous is
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Sergejevs, Aleksandrs. "A fully controlled LED light source with an emphasis on repeatable photocatalytic experimentation." Thesis, University of Bath, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760982.

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Photocatalytic treatment has the potential to become a cost effective method of organic contaminant removal from water. Photocatalytic materials are semiconductors that enhance chemical reactions such as the breakdown of organic molecules in the presence of light. One of the most studied photocatalysts for water purification is titanium dioxide (TiO2). Variations in the composition of photocatalysts can affect the outcome of the experiments, the detection of the change in behaviour of the photocatalyst is of significant scientific interest. It requires minimisation of the impact of all other f
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Armelim, Ana Sofia Monteiro. "Experiências com LEDs." Master's thesis, Universidade do Porto. Reitoria, 1999. http://hdl.handle.net/10216/10041.

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Steiger, Sebastian. "Modelling Nano-LEDs." Konstanz Hartung-Gorre, 2009. http://d-nb.info/995394202/04.

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Armelim, Ana Sofia Monteiro. "Experiências com LEDs." Dissertação, Universidade do Porto. Reitoria, 1999. http://hdl.handle.net/10216/10041.

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NASCIMENTO, Jadiel da Silva. "Dispositivo para medição e controle da pressão do balonete das proteses traqueais." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18945.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-05-30T13:57:02Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação versão impressão 11.07.16.pdf: 2713868 bytes, checksum: 1b43ccd8bfdd9e87e9ee0dc36497b916 (MD5)<br>Made available in DSpace on 2017-05-30T13:57:02Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação versão impressão 11.07.16.pdf: 2713868 bytes, checksum: 1b43ccd8bfdd9e87e9ee0dc36497b916 (MD5) Previous issue date: 2016-02-29<br>O uso de
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Göhler, Tino. "Lichtauskopplung aus LEDs mittels Metallnanoteilchen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-64116.

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Der externe Wirkungsquerschnitt von auf AlGaAs/InGaAlP basierenden Leuchtdioden (LEDs) ist auf Grund von Totalreflexion infolge des hohen Brechungsindex des Halbleitermaterials (n=3...4) beschränkt. Auf die Oberfläche der LED aufgebrachte metallische Nanoteilchen (MNT) können jedoch als Dipolstreuer genutzt werden, um so die Emission der LED zu vergrößern. In dieser Arbeit wurden zunächst einzelne Goldnanoteilchen verschiedener Größe auf einer solchen Leuchtdiode in zwei verschiedenen Der externe Wirkungsquerschnitt von auf AlGaAs/InGaAlP basierenden Leuchtdioden (LEDs) ist auf Grund von Total
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Coutinho, Ronaldo Portela. "Conversor TrifÃsico com Capacitor Chaveado para LEDs de PotÃncia." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17634.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Este trabalho apresenta o estudo, o projeto e a implementaÃÃo de um driver trifÃsico para diodos emissores de luz (LEDs) baseado num conversor com capacitor chaveado (SC â Switched Capacitor), tambÃm conhecido como charge-pump. Uma luminÃria LED com a tecnologia Chip-on-Board (COB), que proporciona uma elevada densidade de potÃncia, à utilizada como carga. Assim como os LEDs, os drivers destes dispositivos devem apresentar uma longa vida Ãtil e um elevado rendimento. A vida Ãtil dos drivers para LEDs à geralmente limitada pelo uso d
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Wallace, Michael. "Optoelectronic study of InGaN/GaN LEDs." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27451.

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The quality of light emitting diodes (LEDs) has increased to a point where solid state lighting is becoming fairly common. Despite this, greater understanding of the effect of the device structure and the electric fields within them is helpful to continue improving device efficiency and uniformity and in reducing costs. In this thesis the optical and electronic properties of InGaN/GaN LEDs have been studied with a combination of luminescence spectroscopy, microscopy, conductivity mapping and efficiency measurements. A study was made of the effects of the various electric fields, and the interp
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Books on the topic "LEDs"

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Zhou, Shengjun, and Sheng Liu. III-Nitride LEDs. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0436-3.

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Zhang, Zi-Hui, Chunshuang Chu, Kangkai Tian, and Yonghui Zhang. Deep Ultraviolet LEDs. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6179-1.

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Steiger, Sebastian. Modelling Nano-LEDs. Hartung-Gorre, 2009.

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Mottier, Patrick, ed. LEDs for Lighting Applications. ISTE, 2009. http://dx.doi.org/10.1002/9780470612019.

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Clark, Liz. Controlling LEDs with Arduino. Apress, 2019. http://dx.doi.org/10.1007/978-1-4842-4883-6.

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Lenk, Ron. Practical lighting design with LEDs. IEEE Press, 2011.

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Lenk, Ron, and Carol Lenk. Practical Lighting Design With LEDs. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118008218.

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Electronic, Telefunken. Opto-semiconductors-LEDs and displays databook. Telefunken Electronic, 1986.

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Kim, Jungsang, Seema Somani, and Yoshihisa Yamamoto. Nonclassical Light from Semiconductor Lasers and LEDs. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56814-5.

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Feng, Zhe Chuan, ed. Handbook of Solid-State Lighting and LEDs. CRC Press, 2017. http://dx.doi.org/10.1201/9781315151595.

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Book chapters on the topic "LEDs"

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Cook, David. "LEDs." In Robot Building for Beginners. Apress, 2015. http://dx.doi.org/10.1007/978-1-4842-1359-9_10.

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Cook, David. "LEDs." In Robot Building for Beginners. Apress, 2002. http://dx.doi.org/10.1007/978-1-4302-0826-6_10.

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Cook, David. "LEDs." In Robot Building for Beginners. Apress, 2009. http://dx.doi.org/10.1007/978-1-4302-2749-6_10.

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Ebe, Hinako, Takayuki Chiba, Yong-Jin Pu, and Junji Kido. "Solution-Processed Organic LEDs and Perovskite LEDs." In Organic Electronics Materials and Devices. Springer Japan, 2024. http://dx.doi.org/10.1007/978-4-431-56936-7_7.

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Li, Jinmin, Junxi Wang, Xiaoyan Yi, et al. "Applications of LEDs." In Springer Series in Materials Science. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7949-3_11.

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Seneviratne, Pradeeka. "Working with LEDs." In Beginning e-Textile Development. Apress, 2020. http://dx.doi.org/10.1007/978-1-4842-6261-0_2.

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Cao, Xian-An. "Green Nitride LEDs." In Springer Series in Materials Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23521-4_4.

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Yeh, Wen-Yung, Hsi-Hsuan Yen, Kuang-Yu Tai, and Pei-Ting Chou. "High Voltage LEDs." In Topics in Applied Physics. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5863-6_12.

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Yeh, Wen-Yung, Hsi-Hsuan Yen, Kuang-Yu Tai, and Pei-Ting Chou. "High-Voltage LEDs." In Topics in Applied Physics. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3755-9_15.

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Long, Hao. "ZnO-Based LEDs." In Handbook of Solid-State Lighting and LEDs. CRC Press, 2017. http://dx.doi.org/10.1201/9781315151595-22.

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Conference papers on the topic "LEDs"

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Congreve, Daniel N. "Wide-bandgap perovskite LEDs." In Organic and Hybrid Light Emitting Materials and Devices XXVIII, edited by Tae-Woo Lee, Franky So, and Ji-Seon Kim. SPIE, 2024. http://dx.doi.org/10.1117/12.3044768.

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Haerle, Volker. "LEDs." In Photonic Applications Systems Technologies Conference. OSA, 2007. http://dx.doi.org/10.1364/phast.2007.pwb1.

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Liu, Zhi, Yan Huang, and Joshua R. Trampier. "LEDS." In SIGSPATIAL'16: 24th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. ACM, 2016. http://dx.doi.org/10.1145/2996913.2996928.

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Chaves, Julio, Juan C. Minano, and Pablo Benitez. "Afocal video-pixel lens for tricolor LEDs." In Optics & Photonics 2005, edited by Roland Winston and R. John Koshel. SPIE, 2005. http://dx.doi.org/10.1117/12.620148.

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Stough, Matthew A. "Advanced LEDs." In Optics and Photonics for Advanced Energy Technology. OSA, 2009. http://dx.doi.org/10.1364/energy.2009.wb2.

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Sargent, Edward H. "Perovskite LEDs." In Organic and Hybrid Light Emitting Materials and Devices XXV, edited by Tae-Woo Lee, Franky So, and Chihaya Adachi. SPIE, 2021. http://dx.doi.org/10.1117/12.2597304.

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Matveev, Boris, Maxim Remennyy, K. Sergey, et al. "2.5.5 Microimmersion lens LEDs for portable photoacoustic methane sensors." In 14th International Meeting on Chemical Sensors - IMCS 2012. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2012. http://dx.doi.org/10.5162/imcs2012/2.5.5.

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Ackermann, B., V. Schulz, C. Martiny, A. Hilgers, and X. Zhu. "Control of LEDs." In Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting. IEEE, 2006. http://dx.doi.org/10.1109/ias.2006.256907.

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Fahrner, Wolfgang R., Alexander M. Zaitsev, Alexander A. Melnikov, Andrej V. Denisenko, Reinhart Job, and Shuit-Tong Lee. "LEDs on diamond." In Optoelectronics and High-Power Lasers & Applications, edited by E. F. Schubert. SPIE, 1998. http://dx.doi.org/10.1117/12.304417.

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Savchuk, Alex, Oleg I. Rabinovich, Sergey Nikiforov, Marina Orlova, and Svetlana Podgornaya. "AlGaP LEDs optimization." In Physics and Simulation of Optoelectronic Devices XXIX, edited by Marek Osiński, Yasuhiko Arakawa, and Bernd Witzigmann. SPIE, 2021. http://dx.doi.org/10.1117/12.2577015.

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Reports on the topic "LEDs"

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Davis, J., and Kelley Rountree. Initial Benchmarks of UV LEDs and Comparisons with White LEDs. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1859677.

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Dieleman, Anja, Kees Weerheim, Marjolein Kruidhof, et al. Duurzame teeltsystemen met LEDs. Stichting Wageningen Research, Wageningen Plant Research, Business unit Glastuinbouw, 2022. http://dx.doi.org/10.18174/579971.

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Author, Not Given. LEDS GP Success Story: Fostering Coordinated LEDS Support in Kenya (Fact Sheet). Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1127275.

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Epler, John. Low-Cost Illumination-Grade LEDs. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1113836.

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Jung Han and Arto Nurmikko. Multicolor, High Efficiency, Nanotextured LEDs. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1053784.

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Han, J., and M. H. Crawford. MOCVD growth of AlGaN UV LEDs. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/658459.

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Christian Wetzel and E. Fred Schubert. High Performance Green LEDs by Homoepitaxial. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/1030646.

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Chung, Ted, and Wouter Soer. Improved Radiative Recombination in AlInGaP LEDs. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1607490.

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Shelton, Sydney Anne. The Viability of LEDs at LANL (PowerPoint). Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1374305.

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Paul Fini. High-Efficiency Non-Polar GaN-Based LEDs. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1001208.

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