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Optical absorption spectrum of hydrogenated amorphous silicon using photo-pyroelectric spectroscopy (1993)

Fan, J. ; Kakalios, J.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 74 (1993), S. 1799-1804

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The optical absorption coefficient α 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 α 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 αd(approximately-greater-than)10−3, where d is the sample thickness.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.354784

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