Effect of Chloride Ions on Electrodeposition of CdTe from Ammoniacal Basic Electrolytes
Effect of Chloride Ions on Electrodeposition of CdTe from Ammoniacal Basic Electrolytes
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DOI：
10.1149/1.2150159
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发表时间：
2006-02
影响因子：
3.9
通讯作者：
K. Arai;K. Murase;T. Hirato;Y. Awakura
中科院分区：
文献类型：
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作者：
K. Arai;K. Murase;T. Hirato;Y. Awakura
采用含氯离子的氨性碱性电解液进行了CdTe的电沉积，研究了氯离子对电沉积行为和所得CdTe镀层性能的影响。CdTe电沉积的光效应，即，在白色可见光照射下的CdTe的生长表面上的沉积速率的增加，被抑制与增加浓度的氯离子在沉积浴中，而所有的照射条件下得到平坦，光滑，多晶的CdTe层与几乎化学计量组成（49.1-51.7原子%镉）。随着电解液中氯离子浓度的增加，所得沉积物的Cd含量和结晶度均增加。由氯化物电解质制备的沉积态CdTe层具有n型导电性，尽管从硫酸盐电解质获得的CdTe层是p型的，这表明电解质中的氯离子被并入CdTe层中并形成施主能级。
Electrodeposition of CdTe was carried out using ammoniacal basic electrolytes containing chloride ions in order to investigate the effect of chloride ions on the electrodeposition behavior and on the properties of the resulting CdTe deposits. Photoeffect on CdTe electrodeposition, that is, the increase in the deposition rate under irradiation of white visible light onto the growing surface of the CdTe, was depressed with increasing concentration of chloride ions in the deposition bath, while all the irradiation conditions gave flat, smooth, and polycrystalline CdTe layers with almost stoichiometric composition (49.1-51.7 atom % Cd). Both the Cd content and crystallinity of the resulting deposits increased with increasing concentration of chloride ions in the electrolytes. The as-deposited CdTe layer prepared from the chloride electrolyte had an n-type conduction, although the CdTe layer obtained from the sulfate electrolyte was p-type, suggesting that chloride ions in the electrolyte became incorporated into the CdTe layer and formed the donor level.