OPTICAL-ABSORPTION SPECTRUM OF HYDROGENATED AMORPHOUS-SILICON USING PHOTO-PYROELECTRIC SPECTROSCOPY

被引：6

作者：

FAN, J

KAKALIOS, J

机构：

[1] School of Physics and Astronomy, University of Minnesota, Minneapolis

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 74卷 / 03期

关键词：

D O I：

10.1063/1.354784

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical absorption coefficient alpha of doped and undoped hydrogenated amorphous silicon (a-Si:H) has been measured for photon energies from 2.2 to 1.0 eV using photo-pyroelectric spectroscopy (PPES). A simplified experimental setup and analysis for extracting alpha from the PPES data are described. In PPES the temperature rise induced in the a-Si:H thin film due to weakly absorbed light is detected via a pyroelectric polymer in thermal contact with the sample. This technique presently has a sensitivity of alphad > 10(-3), where d is the sample thickness.

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页码：1799 / 1804

页数：6

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