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695 Newest Publications about the topic leds

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Materials, Vol. 9, Pages 979: Conversion of Biowaste Asian Hard Clam (Meretrix lusoria) Shells into White-Emitting Phosphors for Use in Neutral White LEDs

02-Dec-2016 | Chang, Tsung-Yuan ; Wang, Chih-Min ; Lin, Tai-Yuan ; Lin, Hsiu-Mei, Materials, 2016

The increasing volume and complexity of waste associated with the modern economy poses a serious risk to ecosystems and human health. However, the remanufacturing and recycling of waste into usable products can lead to substantial resource savings. In the present study, clam shell waste was first ...

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Effect of V‐pits embedded InGaN/GaN superlattices on optical and electrical properties of GaN‐based green light‐emitting diodes

30-Nov-2016 | Shengjun Zhou, Xingtong Liu, physica status solidi (a), 2016

We investigated effects of V‐pits embedded InGaN/GaN superlattices (SL) on optical and electrical properties of high power green LEDs by changing the number of SL period and SL growth temperature. Surface morphology of V‐pits embedded InGaN/GaN SL with various periods and growth temperatures ...

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LOW COST UVA-LED AS A RADIATION SOURCE FOR THE PHOTO-FENTON PROCESS: A NEW APPROACH FOR MICROPOLLUTANT REMOVAL FROM URBAN WASTEWATER

29-Nov-2016 | Irene de la Obra; Belén A. Esteban García; José Luis L. Casas López; José L García Sánchez; J Sanchez, Photochemical & Photobiological Sciences, 2016

Light Emitting Diode (LED) technology has matured sufficiently to be considered as an alternative UVA radiation source in photoreactors. Currently, low energy consuming LEDs with a wide range of wavelengths and radiant flux are readily available. In this study, UVA-LEDs were used as a radiation ...

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Size‐Scalable and High‐Density Liquid‐Metal‐Based Soft Electronic Passive Components and Circuits Using Soft Lithography

25-Nov-2016 | Min‐gu Kim, Hommood Alrowais, Spyridon Pavlidis, Oliver Brand, Advanced Functional Materials, 2016

The use of conducting liquids with high electrical conductivity, such as eutectic gallium–indium (EGaIn), has great potential in electronics applications requiring stretchability and deformability beyond conventional flexible electronics relying on solid conductors. An advanced liquid metal ...

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Fabrication of InGaN/GaN MQW nano‐LEDs by hydrogen‐environment anisotropic thermal etching

24-Nov-2016 | Kohei Ogawa, Ryo Hachiya, Tomoya Mizutani, Shun Ishijima, Akihiko Kikuchi, physica status solidi (a), 2016

III‐nitride semiconductor nanostructures are attractive materials for the realization of high‐performance and highly functional optoelectronic devices. In this study, we fabricated InGaN/GaN multiple quantum well (MQW) nanostructured light‐emitting diodes (nano‐LEDs) using hydrogen‐environment ...

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Pure Formamidinium‐Based Perovskite Light‐Emitting Diodes with High Efficiency and Low Driving Voltage

23-Nov-2016 | Lei Meng, En‐Ping Yao, Ziruo Hong, Huajun Chen, Pengyu Sun, Zhanlue Yang, Gang Li, Yang Yang, Advanced Materials, 2016

A formamidinium(FA)‐based perovskite has shown superior optoelectronic properties including better stability than methylammonium‐based counterparts. Here, pure FA‐perovskite‐based light‐emitting diodes (LEDs) with high efficiency are reported. Interestingly, the LED clearly shows a sub‐bandgap ...

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Bright Multicolor Bandgap Fluorescent Carbon Quantum Dots for Electroluminescent Light‐Emitting Diodes

23-Nov-2016 | Fanglong Yuan, Zhibin Wang, Xiaohong Li, Yunchao Li, Zhan'ao Tan, Louzhen Fan, Shihe Yang, Advanced Materials, 2016

Multicolor bandgap fluorescent carbon quantum dots (MCBF‐CQDs) from blue to red with quantum yield up to 75% are synthesized using a solvothermal method. For the first time, monochrome electroluminescent light‐emitting diodes (LEDs) with MCBF‐CQDs directly as an active emission layer are ...

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Fabrication of Ag dispersed ZnO films by molecular precursor method and application in GaInN blue LED

21-Nov-2016 | Daichi Taka, Takeyoshi Onuma, Takashi Shibukawa, Hiroki Nagai, Tomohiro Yamaguchi, Ja‐Soon Jang, Mitsunobu Sato, Toh ..., physica status solidi (a), 2016

ZnO films dispersed with Ag‐nanocrystals (Ag‐NC/ZnO) were fabricated by the molecular precursor method. Electrical and optical properties of the films and their application in the GaInN‐based blue LEDs were studied through the observations of photoluminescence (PL) spectra and analytical ...

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Study of luminescent behavior and crystal defects of different MNa[PO4]-Dy3+ phosphors (M=Mg, Ca, Sr and Ba)

20-Nov-2016 | Author(s): A. Balakrishna, O.M. Ntwaeaborwa, Sensors and Actuators B: Chemical, 2016

Publication date: April 2017 Source:Sensors and Actuators B: Chemical, Volume 242 Author(s): A. Balakrishna, O.M. Ntwaeaborwa Dysprosium (Dy3+) doped alkaline earth based sodium-ortho phosphate (MNa[PO4], where M=Mg, Ca, Sr and Ba) phosphors were prepared by solution combustion method. ...

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Investigation of p‐contact performance for indium rich InGaN based light emitting diodes and solar cells

17-Nov-2016 | Saiful Alam, Suresh Sundaram, Helge Haas, Xin Li, Youssef El Gmili, Miryam E. Jamroz, Ivan C. Robin, Paul L. Voss, J ..., physica status solidi (a), 2016

We report on the optimization of p‐GaN layers for high indium (In) content InGaN applications by optimizing temperature, precursor CP2Mg flow rate and III/V ratio and report also on the optimization of p‐contact performance. Using MOVPE, a 150 nm thick p‐type GaN with moderate Mg doping and a ...

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