Results 111 to 120 of about 74,429 (311)

All-site alloyed perovskite for efficient and bright blue light-emitting diodes

Nature Communications
Perovskite light-emitting diodes have drawn great attention in the fields of displays and lighting, especially for applications requiring high efficiency and high brightness.
Yu Chen, Ruishan Wang, Gunnar Kusch, Bo Xu, Chenjie Hao, Chen Xue, Lu Cheng, Lin Zhu, Jingmin Wang, Hai Li, Rachel A. Oliver, Nana Wang, Wei Huang, Jianpu Wang   +13 more
doaj   +1 more source

Monolithic translucent BaMgAl10O17:Eu2+ phosphors for laser-driven solid state lighting

AIP Advances, 2016
With high power light emitting diodes and laser diodes being explored for white light generation and visible light communication, thermally robust encapsulation schemes for color-converting inorganic phosphors are essential.
Clayton Cozzan, Michael J. Brady, Nicholas O’Dea, Emily E. Levin, Shuji Nakamura, Steven P. DenBaars, Ram Seshadri   +6 more
doaj   +1 more source

Light-emitting diodes in dermatology: stimulation of wound healing

, 2016
Low-level light therapy (LLLT), which is sometimes included in phototherapy, is an effective therapeutic strategy to improve wound healing and reduce pain, inflammation and swelling.
Justyna Fryc, Irena Fryc
core   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

Advanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal, Manuel Romero, Lennart van den Hengel, Nathan Rodkey, Kassio P. S. Zanoni, Gabriel Lozano, Cristina Roldán‐Carmona, Michele Sessolo, Hernán Míguez, Henk J. Bolink   +9 more
wiley   +1 more source

Resonant energy transfer in light harvesting and light emitting applications

, 2009
The performance of light emitting and light harvesting devices is improved by utilising resonant energy transfer. In lighting applications, the emission energy of a semiconductor heterostructure and the absorption of organic dyes or colloidal quantum ...
Chanyawadee, Soontorn
core  

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Grain engineering for efficient near-infrared perovskite light-emitting diodes

Nature Communications
Metal halide perovskites show promise for next-generation light-emitting diodes, particularly in the near-infrared range, where they outperform organic and quantum-dot counterparts.
Sung-Doo Baek, Wenhao Shao, Weijie Feng, Yuanhao Tang, Yoon Ho Lee, James Loy, William B. Gunnarsson, Hanjun Yang, Yuchen Zhang, M. Bilal Faheem, Poojan Indrajeet Kaswekar, Harindi R. Atapattu, Jiajun Qin, Aidan H. Coffey, Jee Yung Park, Seok Joo Yang, Yu-Ting Yang, Chenhui Zhu, Kang Wang, Kenneth R. Graham, Feng Gao, Quinn Qiao, L. Jay Guo, Barry P. Rand, Letian Dou   +24 more
doaj   +1 more source

Variable numerical-aperture temporal-coherence measurement of resonant-cavity LEDs

, 2003
The first interferometric measurements of temporal-coherence length variation with numerical aperture (NA) are described for 650 nm, resonant-cavity light-emitting diodes (LEDs) agreeing with spectrally derived results.
Coutinho, RC, Griffiths, HD, Stavrinou, PN, Gray, JW, Parry, G, Oulton, RF, Selviah, DR   +6 more
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Desenvolvimento de películas de PDMS para o aumento da eficácia luminosa de lâmpadas de OLED [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2014.O objetivo principal deste trabalho é desenvolver películas finas de ...
Vicente, Cristiano
core