Passivation of Mercury Cadmium Telluride Surfaces via Electrochemical Generation of a Zinc Telluride Layer
Passivation of Mercury Cadmium Telluride Surfaces via Electrochemical Generation of a Zinc Telluride Layer
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DOI：
10.1149/1.2056167
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发表时间：
1993-03
影响因子：
3.9
通讯作者：
Chang Wei;K. Rajeshwar;J. D. Luttmer
中科院分区：
文献类型：
--
作者：
Chang Wei;K. Rajeshwar;J. D. Luttmer
描述了一种基于电化学生成Cd掺杂ZnTe原生层的单晶Hg 0.77 Cd 0.23 Te （MCT）表面钝化策略。该方案基于四步序列，其中首先氧化MCT表面以生成表面（天然）氧化物。这些氧化物随后在第二步（阴极）中随着电解质中zn2 +离子的还原和与表面teo2的反应生成新生的ZnTe层。进一步的两个步骤是用ZnTe丰富表面，并微调ZnTe钝化层的组成
A strategy is described for the passivation of single-crystal Hg 0.77 Cd 0.23 Te (MCT) surfaces which is based on the electrochemical generation of a Cd-admixed ZnTe native layer. The scheme is based on a four-step sequence wherein the MCT surface is first oxidized to generate surface (native) oxides. These oxides are reduced subsequently in a second (cathodic) step along with the reduction of Zn 2+ ions in the electrolyte and reaction with the surface TeO 2 to generate a nascent ZnTe layer. Two further steps serve to enrich the surface with ZnTe and to fine tune the composition of the ZnTe passivation layer