کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1481671 | 991538 | 2012 | 4 صفحه PDF | دانلود رایگان |
Metastability effects in microcrystalline silicon (μc-Si:H) thin films have been investigated using dark conductivity, σD, photoconductivity, σph, and sub-bandgap absorption methods. Nitrogen and inert gasses can cause reversible aging effect in conductivities but not in the sub-bandgap absorption. However, DI water and O2 gas treatment result in both reversible and nonreversible effects in conductivities as well as in the sub-bandgap absorption. Only oxygen affected the dark conductivity reversibly in amorphous silicon, a-Si:H, films, other results were unaffected from the aging and annealing processes applied.
► Microcrystalline silicon films were aged under controlled gas ambients.
► Aging were characterized by measuring the changes in dark and photoconductivity and dual beam photoconductivity method.
► Nitrogen and inert gas exposures can cause reversible aging effect.
► DI water and oxygen cause larger changes in conductivities and sub-bandgap absorption.
► The bulk of amorphous silicon film is not affected from different aging processes.
Journal: Journal of Non-Crystalline Solids - Volume 358, Issue 17, 1 September 2012, Pages 2074–2077