Optical determination of Fermi-level pinning using electroreflectance
- 15 December 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 24 (12), 7397-7400
- https://doi.org/10.1103/physrevb.24.7397
Abstract
We have investigated the low-field electrolyte electroreflectance (EER) spectra of matte, polycrystalline, electrodeposited -CdSe in the vicinity of the transitions (direct gap at . As the applied bias voltage is varied from near flatband to depletion, the EER amplitude for electrodeposited CdSe decreases by a factor of ∼40. We interpret this decrease in EER signal as evidence of Fermi-level pinning, which we attribute to the presence of surface states.
Keywords
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