Thermal Quenching and Photo-Enhancement of μτ Products in a-Si:H - The Role of Dangling Bonds and Band Tails
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ABSTRACTResults from numerical calculations with a recombination model involving one class of correlated dangling-bond states and exponential band tails, in a-Si:H, are reported. Fermi level, light intensity and temperature dependences of the μτ products are studied. The results are consistent with experimental data. It is found that photo-enhancement of (μτ)e, or superlinear photoconductivity, as well as thermal quenching, are associated with a capture cross section of the band tails smaller than the capture cross sections of the dangling-bond states.
2004 ◽
Vol 13
(01)
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pp. 293-300
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2014 ◽
Vol 778-780
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pp. 281-284
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1983 ◽
Vol 38
(7)
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pp. 712-718
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1978 ◽
Vol 86
(1)
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pp. K45-K47
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