| CdSe膜电极在Na2SO3溶液中的电化学调制光谱 |
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| 引用本文： | 田建华,刘义平,梁宝臣,单忠强.CdSe膜电极在Na2SO3溶液中的电化学调制光谱[J].南开大学学报,2004,37(1):11-15. |
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| 作者姓名： | 田建华 刘义平 梁宝臣 单忠强 |
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| 作者单位： | [1]天津大学化工学院，天津300072 [2]天津理工学院化学工程系，天津300191 |
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| 摘 要： | 本采用本实验室研制的T-1 EMS电化学调制光谱仪研究了电沉积CdSe电极在1mol／L Na2SO3溶液中的电化学调制光谱(EMRS)特性．实验结果表明，CdSe电极在Na2SO3溶液中的EMRS具有典型的Franz—Keldysh振荡峰．根据Aspnes提出的弱电场三阶微商电解液电反射理论，对CdSe电极的EMRS进行了定量分析，计算出了CdSe电极的禁带宽度和展宽系数等相关参数．结合EMRS随直流偏置电位的变化，快速、准确地确定出CdSe电极在NaSO3溶液体系中的平带电位值．这些参数为研究CdSe电极的半导体性质和界面结构提供了重要信息．
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| 关 键 词： | CdSe膜电极 电子学参数 电化学调制反射光谱 |
| 文章编号： | 0465-7942(2004)01-0011-05 |
| 修稿时间： | 2003年5月30日 |
THE ELECTROCHEMICAL MODULATION REFLECTANCE SPECTRUM CHARACTERISTICS OF CdSe FILM ELECTRODES |
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| TIAN Jianhua ,LIU Yiping ,LIANG Baochen ,SHAN Zhongqiang.THE ELECTROCHEMICAL MODULATION REFLECTANCE SPECTRUM CHARACTERISTICS OF CdSe FILM ELECTRODES[J].Acta Scientiarum Naturalium University Nankaiensis,2004,37(1):11-15. |
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| Authors: | TIAN Jianhua LIU Yiping LIANG Baochen SHAN Zhongqiang |
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| Institution: | TIAN Jianhua 1,LIU Yiping 1,LIANG Baochen 2,SHAN Zhongqiang 1 |
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| Abstract: | The electrochemical modulation reflectance spectra (EMRS) characteristics of CdSe film electrodes in 1mol/L NaSO 3 solutions were studied in this paper. The experiment was carried out by means of T 1 EMS system which was specially designed in this laboratory. EMRS of CdSe electrodes exhibited typical France Keldysh oscillations. EMRS spectra were analyzed by means of the low field theory of the electrolyte electric reflection at 3 D dimensional critical point. As a result, the electronic parameters of CdSe film electrodes, such as energy gap and the broadening coefficients can be determined. The spectra of CdSe film electrodes varying with potential have also been obtained, by which the flat band potential of CdSe film electrode in Na 2SO 3 solutions can be located. These electronic parameters will play an important role in studding on the semiconductor behaviors and interface structure of CdSe electrode. |
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| Keywords: | CdSe film electrode electronic parameter electrochemical modulation reflectance spectra |
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