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Molten Salt Electrolytes for Electrodeposition of CdTe Films

机译:用于CdTe膜电沉积的熔融盐电解质

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We report preliminary investigation of several molten salt electrolytes containing CdCl_2 and TeCl_4 for the electrode-position of CdTe films at temperatures well above (> 250℃) those used with aqueous and organic electrolytes. These high temperatures have potential to dramatically increase the crystallite size (Poole, Engelken, et al., 1994), as is important for optoelectronic device applications of CdTe, a leading Ⅱ-Ⅵ semiconductor. This paper will survey the results obtained with electrolytes such as B_2O_3/HBO_2 (m.p. ≈ 230℃), NaCH_3COO (m.p. ≈ 324℃), ZnCl_2 (m.p. ≈ 283℃), and LiCl/KCl (m.p. ≈ 350℃), with an emphasis on the latter two. Key material to be presented includes 1) voltammetric data for the solutions, 2) x-ray diffractometry data for deposited films, 3) a discussion of the numerous practical problems associated with high temperature electrochemistry, especially in corrosive, volatile systems, and 4) emphasis of the value of an operationally feasible high temperature plating system to the commercial viability of electrodeposited semiconductor films.
机译:我们报告了对含有CdCl_2和TeCl_4的几种熔融盐电解质的初步研究,这些电解质用于CdTe膜在高于(> 250℃)的温度下与水和有机电解质一起使用时的电极位置。这些高温有可能显着增加微晶尺寸(Poole,Engelken等,1994),这对领先的Ⅱ-Ⅵ半导体CdTe的光电器件应用很重要。本文将调查使用B_2O_3 / HBO_2(mp≈230℃),NaCH_3COO(mp≈324℃),ZnCl_2(mp≈283℃)和LiCl / KCl(mp≈350℃)等电解质获得的结果。强调后两者。提出的关键材料包括:1)溶液的伏安数据,2)沉积膜的X射线衍射数据,3)与高温电化学相关的许多实际问题的讨论,尤其是在腐蚀性,挥发性系统中,以及4)强调了在操作上可行的高温电镀系统的价值,以提高电沉积半导体薄膜的商业可行性。

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