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Study of Si and Ge Atoms Termination Using H-Dilution in SiGe:H Alloys Deposited by Radio Frequency (13.56 MHz) Plasma Discharge at Low Temperature.
Cosme, Ismael; Kosarev, Andrey; Zarate-Galvez, Saraí; Martinez, Hiram E; Mansurova, Svetlana; Kudriavtsev, Yuri.
Afiliação
  • Cosme I; Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
  • Kosarev A; Consejo Nacional de Ciencia y Tecnología-INAOE, Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
  • Zarate-Galvez S; Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
  • Martinez HE; Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
  • Mansurova S; Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
  • Kudriavtsev Y; Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Luis Enrique Erro # 1, Tonantzintla, Puebla, CP 72840, Mexico.
Materials (Basel) ; 13(5)2020 Feb 26.
Article em En | MEDLINE | ID: mdl-32110866
In this work, we present the study of the atomic composition in amorphous SiXGeY:HZ films deposited by radio frequency (RF-13.56 MHz) plasma discharge at low deposition temperature. A study and control of Si and Ge atoms termination using H-dilution in SiGe:H alloys deposited by RF plasma discharge was conducted and we made a comparison with low-frequency plasma discharge studies. Solid contents of the main elements and contaminants were determined by SIMS technique. It was found that for low dilution rates from RH = 9 to 30, the germanium content in the solid phase strongly depends on the hydrogen dilution and varies from Y = 0.49 to 0.68. On the other hand, with a higher presence of hydrogen in the mixture, the germanium content does not change and remains close to the value of Y = 0.69. The coefficient of Ge preferential incorporation depended on RH and varied from PGe = 0.8 to 4.3. Also, the termination of Si and Ge atoms with hydrogen was studied using FTIR spectroscopy. Preferential termination of Si atoms was observed in the films deposited with low RH < 20, while preferential termination of Ge atoms was found in the films deposited with high RH > 40. In the range of 20 < RH < 40, hydrogen created chemical bonds with both Si and Ge atoms without preference.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça