Photocurrent analysis of AgIn5S8 crystal

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2016-10-01

Author

Bucurgat, Mahmut
Ozdemir, Selahattin
Firat, Tezer

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The photocurrent (PC) spectrum of AgIn5S8 crystal consists of a single peak, which provides to determine the bandgap energy by applying the Moss rule. The temperature dependence of the bandgap energy was also calculated. The PC dramatically increased by pre-illumination with light having wavelength corresponding to the bandgap of AgIn5S8. The temperature-dependent PC of the sample was measured at different temperatures from 80 to 300 K and the PC spectrum consisted a single broad peak. Thermal quenching of the PC was observed to start at similar to 105 K and the PC completely quenched at similar to 180 K. The quenching mechanism was discussed in terms of the two-centre model. The height of the PC peak rised linearly with applied voltage up to 5.0 V under constant intensity of light. Similarly, the dark current-voltage characteristics consisted of a single region dominating an ohmic behaviour, and no space charge limited region was apparent at various temperatures up to 20 V.

Subject Keywords

General Materials Science, Mechanics of Materials

URI

https://hdl.handle.net/11511/66419

Journal

BULLETIN OF MATERIALS SCIENCE

DOI

https://doi.org/10.1007/s12034-016-1302-z

Collections

Department of Physics, Article

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Citation Formats

M. Bucurgat, S. Ozdemir, and T. Firat, “Photocurrent analysis of AgIn5S8 crystal,” BULLETIN OF MATERIALS SCIENCE, pp. 1521–1529, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66419.