Thermally induced depolarization currents in CaIn2S4 single crystalстатья
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Аннотация:For the first time results are presented from a study of thermally induced depolarization currents in CaIn2S4 single crystal. Thermally induced depolarization spectra of CaIn2S4 structures are measured at T = 99 K for different heating rates, polarization times, and delay times after switchoff of the electric field and before measurement of the short circuit current. The principal parameters of the trapping centers are determined: embedding depth E(t)=O.33 eV, capture cross section S=10(-18) cm(2), frequency factor v=10(8) s(-1), and trap concentration N-t = 10(15)-10(16) cm(-3). It is found that in single crystal CaIn2S4 there is-a bimolecular. mechanism with strong multiple trapping. (C) 1996 American Institute of Physics.