Deep electron traps in As₂Se₃ single crystals studied by photoconductivity and TSC measurements

TSDC spectroscopy of relaxational and interfacial phenomena

“…The TSDC technique was successfully used to determine the trap energy distribution of polymer thermoelectrets, glasses and other systems [204][205][206][207][208][209]. Results reveal the existence of some groups of localized states, which are not detected by conventional TSDC [204,[210][211][212][213].…”

Pairing of Electrons by a Point Defect inc−As2Se3

“…2, level Sej ~), consistent with an electron trap level found by experiment at 1.0 eV below the conduction band. 12 This level is somewhat concentrated around a filled nonbonding orbital of the onefold coordinated Se atom (25% of the state) and on the (now) twofold coordinated antisite (20% of the state).…”

Anomalous Photoconductive Transport Properties of As2Se3 Films

“…Systematic studies of the variation in the photoconductivity, particularly in amorphous and/or crystalline As 2 Se 3 , with light intensity (white or monochromatic) and / or temperature has been performed in order to extract information on the localized states distribution in the bandgap of these materials [1][2][3][4][5]. The nature of these localized states is very complicated and still open to further investigation [6].…”

“…Thermally stimulated depolarization current (TSDC) technique has been successfully used to determine the trap energy distribution of polymer thermoelectrets and still very scarcely in glasses [5][6][7][8][9][10]. Results reveal the existence of some groups of localized states, which are not detected by the conventional thermal stimulated conductivity spectra (TSC) [3,5,[11][12][13].…”