某些稀土离子对电沉积 CdTe 薄膜性能影响的研究  

A STUDY ON EFFECT OF SOME RARE EARTH ON CATHODIC DEPOSITION OF POLYCRYSTALLINE CdTe FILM

作　　者：郭清松[1] 刘建军[1] 张景林[1] 

机构地区：[1]内蒙古大学化学系

出　　处：《太阳能学报》1997年第2期174-181,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金;北京中关村分析测试中心资助

摘　　要：ＣｄＴｅ薄膜半导体电极通过电沉积法制备。电沉积溶液组成对ＣｄＴｅ薄膜组成和性能有较大影响，通过在电镀液中添加某些稀土离子，结合ＸＲＤ、ＴＥＭ、ＸＰＳ和光电Ｉ－Ｖ特性曲线进行分析研究，表明电沉积ＣｄＴｅ薄膜存在择优取向，经２５０℃热处理后，晶粒长大，镀液中添加Ｙ３＋、Ｌａ３＋、Ｃｅ３＋和Ｎｄ３＋后增大尤为明显，晶粒线性尺寸最大达２．５—３．０×１０－７ｍ左右，并伴有孪晶产生，可提高薄膜Ｃｄ／Ｔｅ比等，有利于提高ＣｄＴｅ光电性能。经测试，其光电转换效率可增大到２．６—３．３％。CdTe semiconductor thin film electrodes have been prepared by means of eletrodeposion in addition some rare earth ions electrodeposited solution The properties of CdTe thin film has been investigated by X ray diffraction,X ray photoelectron spectroscopy,transmisson electron microscopy,scanning electron microscopy and measurement of the I V curves.It is found that optimun crystal orientation and twin crystallites are by electrodeposition Crystallite size of CdTe by electrodeposition in addition Nd 3+ 、Ce 3+ 、La 3+ and Y 3+ have been about 2 5—3 0×10 -7 m after it is heated at 250 in air Those are very advantagous for the improvement of solar cell Solar energy conversion efficiencies up to 2 6—3 3% for photoelectrochemical cell of CdTe thin film by electrodeposition in addition Nd 3+ ,Ce 3+ ,La 3+ ,and Y 3+ are obtained

关 键 词：稀土 电沉积 薄膜 镉 碲 太阳能电池 电极 

分 类 号：TM914.403[电气工程—电力电子与电力传动] TN304.055[电子电信—物理电子学]