Please use this identifier to cite or link to this item: http://repository.aaup.edu/jspui/handle/123456789/1186
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dc.contributor.authorA. F Qasrawi-
dc.contributor.authorgasanly, n. m.$Other$Other-
dc.date.accessioned2020-02-24T13:31:10Z-
dc.date.available2020-02-24T13:31:10Z-
dc.date.issued2007-
dc.identifier.citationVolume 87, 2007 - Issue 36en_US
dc.identifier.issnhttps://doi.org/10.1080/14786430701716979-
dc.identifier.urihttp://repository.aaup.edu/jspui/handle/123456789/1186-
dc.description.abstractDark electrical conductivity and photoconductivity of Tl2InGaTe4 single crystals have been measured and analyzed in the temperature region 100-300 K. The dark electrical conductivity measurements revealed an intrinsic- or extrinsic-type of conductivity above or below 210 K, respectively. From intrinsic conductivity data analysis, the energy band gap of Tl2InGaTe4 crystals was determined as 0.85 eV. In the extrinsic region, the dark conductivity arises from a donor energy level located at 0.30 eV below the conduction band. The photocurrent increases with increasing illumination intensity. The recombination mechanism in the crystal changes as temperature decreases due to the effect of exponential trapping centres. Two trapping and/or recombination centres located at 89 and 27 meV were determined from the temperature dependence of the photocurrent, which decreased or increased with increasing temperature in the regions above or below 180 K, respectively.en_US
dc.publisherPHILOSOPHICAL MAGAZINEen_US
dc.subjectTLINTE2 SINGLE-CRYSTALSen_US
dc.subjectBAND-STRUCTUREen_US
dc.subjectTRANSITIONen_US
dc.subjectCOMPOUNDen_US
dc.subjectSEMICONDUCTORen_US
dc.subjectTLINSE2en_US
dc.subjectTIGATE2en_US
dc.titleStudy of trapping and recombination centres in Tl2InGaTe4 chain crystals by dark electrical conductivity and photoconductivity measurementsen_US
dc.typeArticleen_US
Appears in Collections:Faculty & Staff Scientific Research publications

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