Effect of hydrogen dilution on the open-circuit voltage of hydrogenated amorphous silicon solar cells
- 28 July 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (4) , 782-784
Abstract
The open-circuit voltage (V oc ) of hydrogenated amorphous siliconsolar cells has been studied experimentally and by computer simulation. We find that band gap and defect states affect V oc significantly. Hydrogen ( H 2 ) dilution widens the band gap and reduces density of defect states; both contribute to larger V oc and better fill factor in H 2 diluted solar cells.Valence band tail narrowing could affect V oc , but is not included in this study due to lack of available data.Keywords
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