Simulation of the infrared spectra of amorphous silicon alloys

J.C.L. Cornish; Subaer; P. Jennings; G.T. Hefter

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Simulation of the infrared spectra of amorphous silicon alloys

Conference paper

Peer reviewed

Simulation of the infrared spectra of amorphous silicon alloys

J.C.L. Cornish, Subaer, P. Jennings and G.T. Hefter

Journal of Computational Chemistry, Vol.17(3), pp.771-776

Materials Research Society

MRS Spring Symposium (San Francisco, 08/04/1996–12/04/1996)

1996

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Abstract

Changes in minority carrier lifetimes in a-Si:H, p-i-n photovoltaic cells due to light soaking have been investigated using the open circuit voltage decay (OCVD) method over the temperature range 223 K to 296 K. Using light from a Xenon flash lamp for excitation produced unexpected results: in the light soaked material, band-to-band transitions were evident at a higher temperature than for the as-deposited samples and became increasingly pronounced as the temperature was reduced. Results obtained using red light at 670 nm from a pulsed diode laser to produce relatively uniform illumination throughout the thickness of the film, however, produced results very similar to those obtained for as-deposited films. Plots of the reciprocal of the trap activation time versus 1000/T for the results for both xenon lamp and laser excitation can be fitted by straight lines. Two distinct sets of lines with activation energies in the ranges 0.07 to 0.20 eV and 0.38 to 0.51 eV are obtained with the activation energy and the exponential prefactors exhibiting a Meyer-Neldel relationship.

Details

Title: Simulation of the infrared spectra of amorphous silicon alloys
Authors/Creators: J.C.L. Cornish (Author/Creator)
Subaer (Author/Creator)
P. Jennings (Author/Creator)
G.T. Hefter (Author/Creator)
Publication Details: Journal of Computational Chemistry, Vol.17(3), pp.771-776
Conference: MRS Spring Symposium (San Francisco, 08/04/1996–12/04/1996)
Publisher: Materials Research Society
Identifiers: 991005540096207891
Murdoch Affiliation: School of Chemical and Mathematical Science
Language: English
Resource Type: Conference paper
Note: Proceedings of the 1996 MRS Spring Symposium; San Francisco, CA, USA; 8 April 1996 through 12 April 1996

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