Comparison of majority carrier charge transfer velocities at Si/polymer and Si/metal photovoltaic heterojunctions
- 23 August 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (8), 083503
- https://doi.org/10.1063/1.3480599
Abstract
Two sets of silicon (Si) heterojunctions with either Au or PEDOT:PSS contacts have been prepared to compare interfacial majority carrier charge transfer processes at Si/metal and Si/polymer heterojunctions. Current-voltage ( J - V ) responses at a range of temperatures, wavelength-dependent internal quantum yields, and steady-state J - V responses under illumination for these devices are reported. The cumulative data suggest that the velocity of majority carrier charge transfer, v n , is several orders of magnitude smaller at n-Si/PEDOT:PSS contacts than at n-Si/Au junctions, resulting in superior photoresponse characteristics for these inorganic/organic heterojunctions.Keywords
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