电化学沉积CdSe纳晶薄膜的性能及沉积机理

Abstract

电化学沉积CdSE纳晶薄膜的性能及沉积机理王维波林瑞峰林原萧绪瑞（中国科学院感光化学研究所，光电化学中心，北京100101）陈旭光杨勇（厦门大学固体表面物理化学国家重点实验室，厦门361005）关键词CdSE纳晶薄膜，电化学沉积，扫描隧道显微镜...

? Nanocrystalline CdSe thin Films were prepared by electrochemical deposition.SEM and XRD measurements indicate that this thin Film was composed of CdSe nanocrystalline particles.A blue shiFt in the absorption onset is seen For the thin Film with quantum size eFFects.Laser scanning microzone photocurrent spectra were used to observe the eFFects of microstructure on photoelectrochemical properties of CdSe Film.From the Fractal characteristic of STM images recorded at diFFerent stages of electrochemical deposition.Fractal dimension was calculated to be 1.50.Kinetic clusters aggregation model was suggested For electrochemical deposition of CdSe nanocrystalline thin Film in terms of kinetic theories of Fractal growth.