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题名: Photocurrent derivative spectra of ZnCdSe-ZnSe double multi-quantum wells
作者: Yu GH;  Fan XW;  Guan ZP;  Zhang JY;  Zhao XW;  Shen DZ;  Zheng ZH;  Yang BJ;  Jiang DS;  Chen YB;  Zhu ZM
出版日期: 1999
会议日期: JUN 24-26, 1998
摘要: Photocurrent (PC) spectra of ZnCdSe-ZnSe double multi-quantum wells are measured at different temperature. Its corresponding photocurrent derivative (PCD) spectra are obtained by computing, and the PCD spectra have greatly enhanced the sensitivity of the relative weak PC signals. The polarization dependence of the PC spectra shows that the transitions observed in the PC spectra are heavy-hole related, and the transition energy coincide well with the results obtained by envelope function approximation including strain. The temperature dependence of the photocurrent curves indicates that the thermal activation is the dominant transport mechanism of the carriers in our samples. The concept of saturation temperature region is introduced to explain why the PC spectra have different temperature dependence in the samples with different structure parameters. It is found to be very useful in designing photovoltaic devices.
会议名称: 40th Electronic Materials Conference (EMC-40)
KOS主题词: Electron paramagnetic resonance spectroscopy;  alpha-particle spectra;  Optical spectrometers;  Spectrum analysis;  Photoluminescence;  Heterostructures;  Optical detectors;  Light meters
会议文集: JOURNAL OF ELECTRONIC MATERIALS, 28 (5)
专题: 中国科学院半导体研究所(2009年前)_会议论文

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推荐引用方式:
Yu GH; Fan XW; Guan ZP; Zhang JY; Zhao XW; Shen DZ; Zheng ZH; Yang BJ; Jiang DS; Chen YB; Zhu ZM .Photocurrent derivative spectra of ZnCdSe-ZnSe double multi-quantum wells .见:MINERALS METALS MATERIALS SOC .JOURNAL OF ELECTRONIC MATERIALS, 28 (5),420 COMMONWEALTH DR, WARRENDALE, PA 15086 USA ,1999,563-566
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