Abstract
A simple, quantitative relationship between the semiconductor surface recombination velocity (Sr) and the open-circuit photovoltage (Voc) of photoelectrochemical systems was derived and verified experimentally. Experimental results obtained for the n-Si/acetone-FeCp2+/0-LiClO4 junction indicate that Voc is controlled by surface recombination. Quantitative analysis of the results using the derived expression yields values of the barrier height and Sr that compare favorably with published data. Application of the equation to other semiconductor/liquid junction cells suggests that the expression may be important in evaluating and understanding the behavior of a wide range of photoelectrochemical systems.
Original language | American English |
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Pages (from-to) | 1231-1236 |
Number of pages | 6 |
Journal | Journal of the Electrochemical Society |
Volume | 141 |
Issue number | 5 |
DOIs | |
State | Published - 1994 |
NREL Publication Number
- NREL/JA-452-6064
Keywords
- photoelectrochemical cells solar cells
- photoelectrochemistry
- semiconductor-electrolyte boundaries
- surface photovoltage surface recombination