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528 Newest Publications about the topic leds

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Application of Light‐Emitting Diodes in Food Production, Postharvest Preservation, and Microbiological Food Safety

22-Aug-2015 | Craig D'Souza, Hyun‐Gyun Yuk, Gek Hoon Khoo, Weibiao Zhou, Comprehensive Reviews in Food Science and Food Safety, 2015

Abstract Light‐emitting diodes (LEDs) possess unique properties that are highly suitable for several operations in the food industry. Such properties include low radiant heat emissions; high emissions of monochromatic light; electrical, luminous, and photon efficiency; long life expectancy, ...

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Growth mechanisms of GaN microrods for 3D core–shell LEDs: The influence of silane flow

20-Aug-2015 | Jana Hartmann, Xue Wang, Henning Schuhmann, Wanja Dziony, Lorenzo Caccamo, Johannes Ledig, Matin Sadat Mohajerani, T ..., physica status solidi (a), 2015

The three‐dimensional growth of GaN structures as a basis for the fabrication of 3D GaN core–shell LEDs has attracted substantial attention in the past few years. GaN nanorods or microrods with high aspect ratios can be grown by selective area epitaxy on a GaN buffer through a SiOx mask. It has ...

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Prospecting Lighting Applications with Ligand Field Tools and Density Functional Theory: A First-Principles Account of the 4f7–4f65d1 Luminescence of CsMgBr3:Eu2+

13-Aug-2015 | Harry Ramanantoanina; Fanica Cimpoesu; Christian Göttel; Mohammed Sahnoun; Benjamin Herden; Markus Suta; Claudia Wic ..., Inorganic Chemistry, 2015

The most efficient way to provide domestic lighting nowadays is by light-emitting diodes (LEDs) technology combined with phosphors shifting the blue and UV emission toward a desirable sunlight spectrum. A route in the quest for warm-white light goes toward the discovery and tuning of the ...

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Materials, Vol. 8, Pages 5265-5275: Plant Growth Absorption Spectrum Mimicking Light Sources

13-Aug-2015 | Jou, Jwo-Huei ; Lin, Ching-Chiao ; Li, Tsung-Han ; Li, Chieh-Ju ; Peng, Shiang-Hau ; Yang, Fu-Chin ; Thomas, K. R. J ..., Materials, 2015

Plant factories have attracted increasing attention because they can produce fresh fruits and vegetables free from pesticides in all weather. However, the emission spectra from current light sources significantly mismatch the spectra absorbed by plants. We demonstrate a concept of using multiple ...

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Facile synthesis of thermally stable Ce3+:Y3Al5O12 phosphor-in-glass for white LEDs

12-Aug-2015 | Jun Huang; Xianli Hu; Jiajian Shen; Donglin Wu; Congfei Yin; Run Xiang; Cheng Yang; Xiaojuan Liang; Weidong Xiang, CrystEngComm, 2015

This study outlines a general but convenient approach to the synthesis of Ce3+:Y3Al5O12 phosphor-in-glass (PiG) with a relative low sintering temperature. A comparative study of as-synthesized PiG and glass ceramic prepared by conventional route was carried out to explore the structural, ...

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“Thermal Charging” Phenomenon in Electrical Double Layer Capacitors

07-Aug-2015 | Jianjian Wang; Shien-Ping Feng; Yuan Yang; Nga Yu Hau; Mary Munro; Emerald Ferreira-Yang; Gang Chen, Nano Letters, 2015

Electrical double layer capacitors (EDLCs) are usually charged by applying a potential difference across the positive and negative electrodes. In this paper, we demonstrated that EDLCs can be charged by heating. An open circuit voltage of 80–300 mV has been observed by heating the supercapacitor ...

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Tunable emission, energy transfer and charge compensation in SrMoO4:Sm3+,Tb3+,Na+ phosphor

06-Aug-2015 | Renping Cao, Kangbin Chen, Shenhua Jiang, Zhiyang Luo, Xiaoguang Yu, Pan Liu, Luminescence, 2015

Abstract A series of SrMoO4:Sm3+,Tb3+,Na+ phosphors was synthesized using a high‐temperature solid‐state reaction method in air. On excitation at 290 nm, SrMoO4:Sm3+,Tb3+ phosphor emitted light that varied systematically from green to reddish‐orange on changing the Sm3+ and Tb3+ ion ...

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Two‐Inch‐Sized Perovskite CH3NH3PbX3 (X = Cl, Br, I) Crystals: Growth and Characterization

06-Aug-2015 | Yucheng Liu, Zhou Yang, Dong Cui, Xiaodong Ren, Jiankun Sun, Xiaojing Liu, Jingru Zhang, Qingbo Wei, Haibo Fan, Feng ..., Advanced Materials, 2015

Two‐inch‐sized perovskite crystals, CH3NH3PbX3 (X=I, Br, Cl) with high crystalline quality are prepared by a solution‐grown strategy. The availability of large perovskite crystals is expected to tranform its broad applications in photovoltaics, optoelectronics, lasers, photodetectors, LEDs, ...

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Blue-Green Color Tunable Solution Processable Organolead Chloride–Bromide Mixed Halide Perovskites for Optoelectronic Applications

06-Aug-2015 | Aditya Sadhanala; Shahab Ahmad; Baodan Zhao; Nadja Giesbrecht; Phoebe M. Pearce; Felix Deschler; Robert L. Z. Hoye; ..., Nano Letters, 2015

Solution-processed organo-lead halide perovskites are produced with sharp, color-pure electroluminescence that can be tuned from blue to green region of visible spectrum (425–570 nm). This was accomplished by controlling the halide composition of CH3NH3Pb(BrxCl1–x)3 [0 ≤ x ≤ 1] perovskites. The ...

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Enhancement of white-light-emission from single-phase Sr5(PO4)3F:Eu2+,Mn2+ phosphors for near-UV white LEDs

05-Aug-2015 | Yaomiao Feng; Jinping Huang; Lili Liu; Jie Liu; Xibin Yu, Dalton Transactions, 2015

A series of single-phase broadband white-light-emitting Sr5(PO4)3F:Eu2+,Mn2+ phosphors were prepared by a solid state reaction. The luminescence property, and the crystal and electronic structures of the fluorophosphates were studied by photoluminescence analysis, XRD Rietveld refinement and ...

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