Eliminating interference effects in picosecond photoinduced absorption decays: Application to intrinsic hydrogenated amorphous silicon
作者:
Dale M. Roberts,
Joseph F. Palmer,
Terry L. Gustafson,
期刊:
Journal of Applied Physics
(AIP Available online 1986)
卷期:
Volume 60,
issue 5
页码: 1713-1718
ISSN:0021-8979
年代: 1986
DOI:10.1063/1.337263
出版商: AIP
数据来源: AIP
摘要:
We measure picosecond photoinduced absorption in a low‐defect sample of intrinsic hydrogenated amorphous silicon. Our results indicate that both the imaginary and real parts of the complex index of refraction contribute to the observed decay of the induced transmittance. We present methods for obtaining the undistorted decay of the induced absorption. We show that the decay of the induced absorption depends strongly on the peak carrier density and the repetition rate of the excitation source. The photoinduced absorption decays are consistent with the model for dispersive transport in amorphous materials.
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