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The effect of substrate temperature on P-CVD deposited a-SiGe:H films

Authors :
Arvind D. Shaligram
M.G. Takwale
B.R. Marathe
Abduljabbar Rashad
Jaydeep V. Sali
Source :
Solar Energy Materials and Solar Cells. 57:209-216
Publication Year :
1999
Publisher :
Elsevier BV, 1999.

Abstract

Undoped a-SiGe : H films were deposited by the RF plasma chemical vapor deposition method. Films deposited at different substrate temperatures ranging between 100°C and 300°C were studied for their optoelectronic and structural properties. Structural defects like vacancies and microvoids were studied by positron lifetime spectroscopy (PLTS) at room temperature. Optoelectronic properties of the films were correlated with the PLTS measurements. The observations show a decrease in the deposition rate with substrate temperature. Good optoelectronic properties and proper structural relaxation have been obtained with a decrease in microvoid concentration.

Details

ISSN :
09270248
Volume :
57
Database :
OpenAIRE
Journal :
Solar Energy Materials and Solar Cells
Accession number :
edsair.doi...........2680b0e9bc8c77a80184084b4454ac72