Dependence of photoconductivity on the dark Fermi level position in amorphous silicon alloys
作者:
M. Hack,
S. Guha,
M. Shur,
期刊:
Applied Physics Letters
(AIP Available online 1984)
卷期:
Volume 45,
issue 4
页码: 467-469
ISSN:0003-6951
年代: 1984
DOI:10.1063/1.95218
出版商: AIP
数据来源: AIP
摘要:
We present results of a new model to describe the dependence of the room‐temperature steady‐state photoconductivity in amorphous silicon alloys upon the position of the dark Fermi level. This dependence is a consequence of both a change in the recombination path and dopant‐created gap states. We also demonstrate the relationship between the power dependence of photoconductivity and dark Fermi level position and show that as a result of space charge neutrality, this dependence can be related to a characteristic energy slope of the density of states only in the absence of injected charge or dopants. Moreover, in agreement with recent experimental data, we show that our model predicts a power dependence of less than 0.5 for high‐intensity illumination onn‐type amorphous silicon.
点击下载:
PDF
(241KB)
返 回