A study of the density of gap states in amorphous semiconductors from thermostimulated conductivity spectra |
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Authors: | Meifang Zhu |
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Institution: | (1) Department of Physics, Graduate School, Academia Sinica, P.O. Box 3908, Beijing, China |
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Abstract: | A theoretical analysis of thermostimulated conductivity spectra TSC(T) has been applied to determine the density of gap states g(E) in a-Si: H and a-Si: H/a-SiN
x
: H multilayer structures. The results for g(E) are consistent with the results deduced from Fritzsche's analytical approach as well as other methods. A comparison has been made between the two different analytical approaches for TSC(T). We discuss the relationship between the energy of maximum thermostimulated current emission E
m and quasi-Fermi level E
q. We demonstrate that E
q could be a better parameter than E
m in the general theoretical treatment of thermostimulated conductivity. |
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Keywords: | 72 80N 71 20 |
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