On the Sigmoidal Shape of Current-Voltage Curves of Photoelectrochemical Solar Cells

Duli Mao, Kang Jin Kim, Arthur J. Frank

Research output: Contribution to journalArticlepeer-review

6 Scopus Citations

Abstract

Current-voltage (J-V) curves of n-GaAs/KOH(aq)-Se22-/Se2- and n-Si/acetone-LiC1O4-Fc+/° (ferrocenium ion/fer-rocene) solar cells exhibit sigmoidal shapes near the open-circuit potential. J-V and flatband potential measurements indicate that the deviation of the J-V curves from the ideal square-like shape to S shape is due to the light-induced displacement of the bandedges. Analytical expressions describing the dependence of light-induced bandedge shifts on the anodic photocurrent, the density of surface states, and the interfacial charge-transfer velocity are derived and verified experimentally. Application of the expressions to J-V data yields quantitative information on the kinetics of interfacial charge transfer.

Original languageAmerican English
Pages (from-to)1869-1873
Number of pages5
JournalJournal of the Electrochemical Society
Volume142
Issue number6
DOIs
StatePublished - 1995

NREL Publication Number

  • NREL/JA-452-7181

Fingerprint

Dive into the research topics of 'On the Sigmoidal Shape of Current-Voltage Curves of Photoelectrochemical Solar Cells'. Together they form a unique fingerprint.

Cite this