STRIKINGLY HIGH PHOTOVOLTAGES OF PHOTOELECTROCHEMICAL SOLAR CELLS EQUIPPED WITH PLATINUM-COATED AND ALKALI-ETCHED n-Si ELECTRODES
- 5 June 1986
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 15 (6) , 987-990
- https://doi.org/10.1246/cl.1986.987
Abstract
Open-circuit photovoltages (Voc) of photoelectrochemical cells having an n-Si electrode coated with vacuum-evaporated platinum in an aqueous redox solution have been remarkably increased by etching the Pt-coated n-Si electrode in alkaline solutions. The maximum Voc obtained was 0.685 V, about 15% higher than that of normal p-n junction Si solar cells (0.59 V), demonstrating the possibility of using these cells as highly efficient solar energy converter. The large increase in Voc is explained by a theory recently proposed by us on semiconductor electrodes coated with microscopically discontinuous metal layers.Keywords
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