Effect of Ammonia Concentration on Electrodeposition of CdTe from Ammonia-alkaline Solutions.

• MURASE Kuniaki

  Dept of Materials Sci. and Eng, Kyoto Univ.

• NAKATANI Iwao

  Dept of Materials Sci. and Eng, Kyoto Univ.

• HIRATO Tetsuji

  Dept of Materials Sci. and Eng, Kyoto Univ.

• AWAKURA Yasuhiro

  Dept of Materials Sci. and Eng, Kyoto Univ.

Bibliographic Information

Other Title

• アンモニア‐アルカリ性水溶液からのＣｄＴｅ電析におよぼすアンモニア濃度の影響
• アンモニア アルカリセイ スイヨウエキ カラ ノ CdTeデンセキ ニ オヨボスアンモニア ノウド ノ エイキョウ

Abstract

Electrodeposition of CdTe film from ammonia-alkaline aqueous solutions with different ammonia concentrations, [NH₃]_total=2.0-5.0mol dm^-3, was studied and deposition behavior at -0.70V vs SHE is discussed using a potential-pH diagram of the Cd-Te-NH₃-H₂O system in terms of underpotential deposition, where the deposition of Te atoms is followed by a rapid adsorption and reduction of Cd (II) species to form CdTe We found that the composition of the resulting film is controlled by ammonia concentration as well as by the pH and Cd (II)/Te (IV) concentration ratio, as previously been studied. The cadmium content of the resulting film increases with decreasing ammonia concentration of solutions An electrolyte with a Cd (II)/Te (IV) concentration ratio of 1, for example, gave a tellurium-rich deposit with low crystallinity under [NH₃]_total of 5.0mol dm^-3, while that with the same Cd(II)/Te(IV) ratio gave almost stoichiometric CdTe under [NH₃]_total of 3.0mol dm^-3

Journal

• Journal of The Surface Finishing Society of Japan

  Journal of The Surface Finishing Society of Japan 50 (4), 367-373, 1999

  The Surface Finishing Society of Japan

Keywords

• Cadmium Telluride
• Compound Semiconductor
• Under-potential Deposition
• Potential-pH Diagram
• Deposition Mechanism

Details

• CRID: 1390282679092416384
• NII Article ID: 10002112218
• NII Book ID: AN1005202X
• DOI: 10.4139/sfj.50.367
• COI: 1:CAS:528:DyaK1MXisVCrtbw%3D
• ISSN: 18843409
• ISSN: 09151869
• ISSN: http://id.crossref.org/issn/09151869
• NDL BIB ID: 4707961
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4707961
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed