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    题名: Photocurrent derivative spectra of ZnCdSe-ZnSe double multi-quantum wells
    作者: Yu, G. H.;Fan, X. W.;Guan, Z. P.;Zhang, J. Y.;Zhao, X. W.;Shen, D. Z.;Zheng, Z. H.;Yang, B. J.;Jiang, D. S.;Chen, Y. B.;Zhu, Z. M.
    贡献者: 淡江大學水資源及環境工程學系
    关键词: Double multi-quantum wells;photocurrent spectra;ZnCdSe-ZnSe
    日期: 1999-05-01
    上传时间: 2009-11-04 17:07:19 (UTC+8)
    出版者: Springer
    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.
    關聯: Journal of Electronic Materials 28(5), pp.563-566
    DOI: 10.1007/s11664-999-0113-z
    显示于类别:[水資源及環境工程學系暨研究所] 期刊論文


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