Results 81 to 90 of about 523,434 (254)

Effect of surface treatment of GaN based light emitting diode wafers on the leakage current of light emitting diode devices

, 2010
To form low-resistance Ohmic contact to p-type GaN, InGaN/GaN multiple quantum well light emitting diode wafers are treated with boiled aqua regia prior to Ni/Au (5 nm/5 nm) film deposition.
Yang H, Zhang, SM, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China. E-mail Address: smzhang@red.semi.ac.cn, Zhu JH, Zhao DG, Wang YT, Wang LJ, Zhu JJ, Zhang SM, Liu ZS, Jiang DS, Wang Yu-Tian, Zhao De-Gang, Zhang Shu-Ming, Yang Hui, Zhu Ji-Hong, Wang Liang-Ji, Zhu Jian-Jun, Jiang De-Sheng, Liu Zong-Shun   +18 more
core   +2 more sources

Reflector designed for light-emitting-diode lighting source in three-dimensional space

, 2015
Reflectors used for light-emitting-diode (LED) light source are designed in three-dimensional space to produce uniform illuminance effect. Reflector's surfaces are calculated by the source-target mapping method in Geometrical Optics.
Hou, Yu, Wang, Lili, Wang, Guangzhen, Tang, Wanwei, Hu, Lichun, Gao, Jian   +5 more
core   +1 more source

Molecular Bridges for 2D Nanomaterials

Advanced Functional Materials, EarlyView.
Molecular cross‐linking provides a versatile strategy to engineer interfaces in 2D materials. By tuning the linker backbone, binding mode, and interflake spacing, molecular bridges can regulate charge transport, mechanical integrity, chemical functionality, and processing.
Yudhajit Bhattacharjee, Kevin Synnatschke, Andreas Fery, Hendrik Schlicke   +3 more
wiley   +1 more source

Digitally Printed Eco‐Friendly Electronic Devices

Advanced Functional Materials, EarlyView.
Fabrication of electronics using eco‐friendly materials through digital printing routes is a promising strategy for improving life cycle sustainability and reducing the environmental impacts of conventional manufacturing. This review highlights state‐of‐the‐art eco‐friendly materials, green ink formulations, various resource‐efficient digital printing ...
Nitheesh M. Nair, Mikel Rincón‐Iglesias, Cristian Mendes‐Felipe, Fatemeh Etehadi, Senentxu Lanceros‐Méndez, Gerardo Hernandez‐Sosa   +5 more
wiley   +1 more source

Experimental Protocol for Color Difference Evaluation Under Stabilized LED Light

Journal of Imaging
There are two key factors to consider before implementing a color discrimination experiment. First, a set of color patches should be selected or designed for the specific purpose of the experiment to be carried out. Second, the lighting conditions should
Sofiane Vernet, Eric Dinet, Alain Trémeau, Philippe Colantoni   +3 more
doaj   +1 more source

Thickness‐Programmable Opto‐Memristive Dynamics in 6‐In Wafer‐Scale Atomic‐Layer‐Controlled WS2 for Reservoir Computing

Advanced Functional Materials, EarlyView.
A 6‐in wafer‐scale atomic‐layer‐controlled tungsten disulfide (WS2) is achieved by combining plasma‐assisted synthesis with three‐gas reactive ion etching. Precise layer control enables tunable band‐gap evolution and pulse‐history‐dependent opto‐memristive dynamics.
Seongho Kim, Muyoung Kim, Junhyung Cho, Yeonho Choi, Gunhyoung Kim, Eunseo Go, Sooji Byun, Minchul Roh, Hyunwoo Shim, Jinhyoung Lee, Byeong‐Seon An, Ki Seok Kim, Seungwoo Song, Min Sup Choi, Taesung Kim, Taehyun Park, Hocheon Yoo, Hyeong‐U Kim   +17 more
wiley   +1 more source

The Study of Lighting Quality of LED and HPS Luminaires Based on Various Road Surface Properties

E3S Web of Conferences, 2018
This paper presents analysis of lighting quality in different road surface conditions using the DIALux software. Dry and wet road surfaces are used to study lighting quality by following classifications of the International Commission on Illumination ...
Yoomak Suntiti, Ngaopitakkul Atthapol
doaj   +1 more source

Material Coupling in Hybrid Neuromorphic Devices: From Fundamentals to System‐Level Applications

Advanced Functional Materials, EarlyView.
Hybrid neuromorphic devices utilize heterointerfaces between emerging semiconductors, where charge transfer and trapping, ion or defect modulation, and photogating are translated into synaptic functions. This paper discusses coupling strategies that tailor interfacial electronic and ionic properties in organic semiconductors, metal oxides, two ...
Minsu So, Sunwoo Jeong, Youngmin Han, Fabrizio Torricelli, Hocheon Yoo, Junhwan Choi   +5 more
wiley   +1 more source

Surface plasmon polariton modification in top-emitting organic light-emitting diodes for enhanced light outcoupling [PDF]

, 2014
We report on the enhanced light outcoupling efficiency of monochrome top-emitting organic light-emitting diodes (OLEDs). These OLEDs incorporate a hole transport layer (HTL) material with a substantially lower refractive index (∼ 1:5) than the emitter ...
Hofmann, S., Gather, M.C., Simone Hofmann, Schwab, T., Malte C. Gather, Martin Wieczorek, Leo, K., Wieczorek, M., Reinhard Scholz, Fuchs, C., Cornelius Fuchs, Karl Leo, Scholz, R., Tobias Schwab, Gather, M.C.; id_orcid   +14 more
core   +1 more source

Architected Bio‐Based Iontronic Skin With Dual‐Mode Pressure and Strain Sensing

Advanced Functional Materials, EarlyView.
Bio‐based acrylates in combination with an ionic liquid create 3D‐printed ionogels with compositionally tuneable mechanics and ionic conductivity. Gyroid architectures amplify low‐pressure sensitivity while preserving robust strain sensing, enabling dual‐mode detection of pressure and deformation.
Maksims Jurinovs, Madara Veseta, Fevzihan Basarir, Beatrise Silava, Eduards Bakis, Krisjanis Smits, Olesja Starkova, Jaana Vapaavuori, Sergejs Gaidukovs   +8 more
wiley   +1 more source