Impact of Hydrogen Dilution on the Properties and Light Induced Changes of a-Si:H Based Materials and Solar Cells

Research output: Contribution to conferencePaper

Abstract

Studies have been carried out on a-Si:H materials and corresponding solar cells fabricated with and without hydrogen dilution of silane by rf PECVD. The effect of hydrogen dilution on the growth kinetics and microstructures and their dependence on the substrate temperature have been studied. Hydrogen diluted a-Si:H materials and solar cells exhibit improved properties and higher stability tolight induced changes. Distinct differences are found in the electron mobility lifetime (..mu...tau..) products and subgap absorption over a wide range of generation rates. Striking differences are also found in the kinetics of light induced degradation in both the materials and their corresponding solar cells. Direct correlations are presented between the degradation kinetics ofp(a-Si:H)/i(a-Si:H)/n(..mu..c-Si) solar cells and those of thin film materials constituting the i-layers.
Original languageAmerican English
Pages747-752
Number of pages6
StatePublished - 1997
EventAmorphous and Microcrystalline Silicon Technology 1997: Materials Research Society Symposium - San Francisco, California
Duration: 31 Mar 19974 Apr 1997

Conference

ConferenceAmorphous and Microcrystalline Silicon Technology 1997: Materials Research Society Symposium
CitySan Francisco, California
Period31/03/974/04/97

Bibliographical note

Work performed by Pennsylvania State University, University Park, Pennsylvania

NREL Publication Number

  • NREL/CP-520-24564

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