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Ya-Fen Wu
Researcher at Ming Chi University of Technology
Publications - 41
Citations - 167
Ya-Fen Wu is an academic researcher from Ming Chi University of Technology. The author has contributed to research in topics: Photoluminescence & Heterojunction. The author has an hindex of 7, co-authored 38 publications receiving 154 citations. Previous affiliations of Ya-Fen Wu include Chang Gung University.
Papers
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Carrier localization effect on luminescence spectra of III―V heterostructures
TL;DR: In this paper, a steady-state rate-equation model for temperature-dependent luminescence spectra from localized-state material system is presented, where the effects of thermal emission, recapturing, radiative and nonradiative recombination are taken into account in the model.
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The effect of junction temperature on the optoelectrical properties of InGaN/GaN multiple quantum well light-emitting diodes
Jen-Cheng Wang,Chia-Hui Fang,Ya-Fen Wu,Wei-Jen Chen,Da-Chuan Kuo,Ping-Lin Fan,Joe-Air Jiang,Tzer-En Nee +7 more
TL;DR: In this article, thermal effects on the optoelectrical characteristics of green InGaN/GaN multiple quantum well (MQW) light-emitting diodes (LEDs) have been investigated in detail for a broad temperature range, from 30°C to 100°C.
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Carrier dynamics study of the temperature- and excitation-dependent photoluminescence of InAs∕GaAs quantum dots
TL;DR: In this article, the authors investigated the effects of the carrier dynamics on the temperature and excitation intensity dependence of photoluminescence (PL) of self-assembled InAs∕GaAs quantum dot heterostructures having different size uniformities.
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Temperature and current dependences of electroluminescence from InGaN/GaN multiple quantum wells
TL;DR: In this article, the S-and W-shaped temperature dependences of the peak energy and linewidth from the EL spectra are demonstrated to be in fair agreement with the carrier motion and thermalization process through hopping over localized states within the Inrich regions.
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Temperature and Excitation Dependence of Photoluminescence Spectra of InAs/GaAs Quantum Dot Heterostructures
TL;DR: In this article, a rate equation model was proposed to take into account the dot size distribution, the random population of density of states, state filling effects, and the important carrier transfer mechanisms for the quantum dot system, including carrier capture, relaxation, thermal emission, and retrapping.