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Acta Physica Sinica (Overseas Edition), 1997, Vol. 6(1): 52-56    DOI: 10.1088/1004-423X/6/1/009
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

STRUCTURE AND PHOTOELECTRIC PROPERTIES OF HYDROGENATED AMORPHOUS SILICON-GERMAN-IUM ALLOYS PRODUCED BY HIGH HYDROGEN DILUTION METHOD

XU JUN (徐骏)a, CHEN KUN-JI (陈坤基)a, FENG DUAN (冯端)a, MIYAZAKI SEIICHI (宫崎诚一)b, HIROSE MASATAKA (广濑全孝)b
a Department of Physics and State Key Laboratory of Solid State Microstructurs, Nanjing University, Nanjing 210008, China; b Department of Electronical Engineering, Hiroshima University, Higashi-Hiroshima 739, Japan
Abstract  A series of hydrogenated amorphous silicon-germanium alloys have been fabricated by high hydrogen dilution method. The Ge content in the film increasea from 0.4 to 0.8 and the corresponding optical bandgap is in the range of 1.48-1.22eV. The photoconductivity is 3.6×10-6 S/cm and photosensitivity is as high as 7.3×103 at an optical bandgap of 1.48eV. The deterioration of photoelectric properties with increasing Ge content could be attributed to the decrease of the bonded hydrogen content and the inhomogeneous structure in the alloy network.
Received:  03 January 1996      Accepted manuscript online: 
PACS:  73.61.Jc (Amorphous semiconductors; glasses)  
  68.55.-a (Thin film structure and morphology)  
  72.40.+w (Photoconduction and photovoltaic effects)  
  68.55.A- (Nucleation and growth)  
  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  78.66.Jg (Amorphous semiconductors; glasses)  

Cite this article: 

XU JUN (徐骏), CHEN KUN-JI (陈坤基), FENG DUAN (冯端), MIYAZAKI SEIICHI (宫崎诚一), HIROSE MASATAKA (广濑全孝) STRUCTURE AND PHOTOELECTRIC PROPERTIES OF HYDROGENATED AMORPHOUS SILICON-GERMAN-IUM ALLOYS PRODUCED BY HIGH HYDROGEN DILUTION METHOD 1997 Acta Physica Sinica (Overseas Edition) 6 52

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