Thermally stimulated currents in layered Ga4SeS3 semiconductor


Creative Commons License

Aytekin S., Yuksek N., Goktepe M., Gasanly N. , Aydinli A.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, cilt.201, ss.2980-2985, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 201 Konu: 13
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1002/pssa.200406854
  • Dergi Adı: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
  • Sayfa Sayıları: ss.2980-2985

Özet

Thermally stimulated current (TSC) measurements are carried out on nominally undoped Ga4SeS3 layered semiconductor samples with the cur-rent flowing along the c-axis in the temperature range of 10 to 150 K. The results are analyzed according to various methods, such as curve fitting, initial rise and Chen's methods, which seem to be in good agreement with each other. Experimental evidence is found for the presence of three trapping centers in Ga4SeS3 with activation energies of 70, 210 and 357 meV. The calculation yielded 7.9 x 10(-21), 7.0 x 10(-19) and 1.5 x 10(-13) cm(2) for the capture cross section, and 1.6 x 10(10), 6.5 x 10(10) and 1.2 x 10(11) cm(-3) for the concentration of the traps studied. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.