Results 291 to 300 of about 634,808 (333)

Emission characteristics of white light phosphor

CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671), 2004
White light LED was successfully fabricated by converting near-UV LED emission (390-420 nm) with a new white light phosphor. This new white phosphor was consisted of three fluorescence materials; two strontium aluminates based with lanthanide oxides, SrAl/sub 2/O/sub 4/:Eu/sup 2+/ (for green (520 nm) emission) and Sr/sub 4/Al/sub 14/O/sub 25/:Eu/sup 2+/
K.M. Lee, null Bao-li An, null Meng-lian Gong, null Ying-liang Liu, K.W. Cheah   +4 more
openaire   +1 more source

White Light Emission from Black Germanium

ACS Photonics, 2017
We demonstrate the nearly perfect absorption and quantum dots-mediated enhanced visible light emissions from defect engineered Ge nanopyramids or black germanium. High-resolution 3D photoluminescence (PL) imaging of the pyramid structure elucidated the position dependency of defects and their emission: Stronger photoluminescence yield was observed at ...
Satish Laxman Shinde, Thang Duy Dao, Satoshi Ishii, Li-Wei Nien, Karuna Kar Nanda, Tadaaki Nagao   +5 more
openaire   +1 more source

White-light emission from AlN dendrites

Journal of Materials Science: Materials in Electronics, 2016
The AlN dendrites were prepared by high temperature plasma nitridation method. The AlN dendrites are composed of hierarchical AlN polycrystal architectures with a wide size range. The photoluminescence spectra of the AlN dendrites exhibit white-light emission including three main bands located at red, green and blue-violet. The multi-colors emission is
Longhai Shen, Xuanshuo Zhang, Janyu Song, Fengqi Li, Dongli Qi   +4 more
openaire   +1 more source

Intrinsic White-Light Emission from Layered Hybrid Perovskites

Journal of the American Chemical Society, 2014
We report on the second family of layered perovskite white-light emitters with improved photoluminescence quantum efficiencies (PLQEs). Upon near-ultraviolet excitation, two new Pb-Cl and Pb-Br perovskites emit broadband "cold" and "warm" white light, respectively, with high color rendition. Emission from large, single crystals indicates an origin from
Emma R, Dohner, Adam, Jaffe, Liam R, Bradshaw, Hemamala I, Karunadasa   +3 more
openaire   +2 more sources

Synthesis of multiple-color emissive carbon dots towards white-light emission

Nanotechnology, 2020
Multiple-color emissive carbon dots (C-dots) are gaining increasing attention in various fields. Herein, we report a facile solvothermal method for the synthesis of multiple-color emissive C-dots with the aim of white-light emission. Under single ultraviolet-light excitation, three C-dots emit a easily controlled fluorescent emission wavelength at 440 ...
Hetong Qi, Xuemei Wu, Hengqi Zhang, Yuhai Tang, Hongfang Gao, Manping Qian, Honglan Qi   +6 more
openaire   +2 more sources

Pure White‐Light Emission of Nanocrystal–Polymer Composites

ChemPhysChem, 2006
Incorporation of semiconductor nanocrystals (NCs) into functional polymers is a highly desirable approach to generate novel materials for use in optoelectronic devices, such as lightemitting diodes (LEDs) and photovoltaic cells. Basic requirement is a good miscibility of the NCs in such a polymer matrix.
Haizhu, Sun, Junhu, Zhang, Hao, Zhang, Yu, Xuan, Chunlei, Wang, Minjie, Li, Ye, Tian, Yang, Ning, Dongge, Ma, Bai, Yang, Zhi Yuan, Wang   +10 more
openaire   +2 more sources

Luminescent Metal-Containing Polymers for White Light Emission

Topics in Current Chemistry, 2016
This chapter focuses on the recent developments in luminescent metallopolymers. Synthetic routes to these polymers are briefly described and their applications in polymer white light-emitting diodes are discussed.
Cheuk-Lam, Ho, Wai-Yeung, Wong
openaire   +2 more sources

White-light emission from a structurally simple hydrazone

Chemical Communications, 2019
Two hydrazones featuring a unique excitation wavelength-dependent dual fluorescence emission have been developed.
Baihao Shao, Nell Stankewitz, Jacob A. Morris, Matthew D. Liptak, Ivan Aprahamian   +4 more
openaire   +2 more sources

Rationally Designed Carbon Nanodots towards Pure White‐Light Emission

Angewandte Chemie, 2017
AbstractWe report a rational synthesis of carbon nanodots (CNDs) aimed at tailoring their emission, starting from a reasoned choice of organic precursors. To showcase the potential of this approach in a field such as optoelectronics, we designed experiments aimed at preparing materials that emit across the entire visible spectrum.
Francesca Arcudi, Luka Đorđević, Maurizio Prato   +2 more
openaire   +3 more sources

Enhanced light extraction by heterostructure photonic crystals toward white-light-emission

Journal of Colloid and Interface Science, 2016
In this work, we present a novel approach on the simultaneous enhancement of intensity of red, green, and blue (RGB) emission by heterostructure colloidal photonic crystals (PCs) with tri-stopbands. The intensity of RGB emission on heterostructure PCs with tri-stopbands overlapping emission wavelengths of RGB QDs can be up to about 8-fold enhancement ...
Heng, Li, Zhaohua, Xu, Bin, Bao, Yanlin, Song   +3 more
openaire   +2 more sources