Test of the thermal equilibration model for persistent photoconductivity in doping-modulated amorphous silicon

B. Everitt, James Kakalios

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The magnitude of the persistent-photoconductivity (PPC) effect in doping-modulated hydrogenated amorphous silicon (a-Si:H) has been investigated as a function of exposure time and illumination temperature. It is found that the excitation of PPC follows a power-law dependence on the exposure time, where the power-law exponent is temperature dependent. We find that T/T0 where T0570 K, in agreement with predictions of the thermal-equilibration model for PPO. These results support the proposal that in a-Si:H the lattice distortion responsible for the metastable-charge trapping in PPC involves hydrogen motion.

Original languageEnglish (US)
Pages (from-to)6820-6823
Number of pages4
JournalPhysical Review B
Volume43
Issue number8
DOIs
StatePublished - Jan 1 1991

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