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Study of the Poole‐Frenkel Effect in CdS Single Crystals
Author(s) -
Kirov K. I.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700390220
Subject(s) - ionization , electric field , poole–frenkel effect , thermal , materials science , trap (plumbing) , atomic physics , thermal emission , field (mathematics) , physics , ion , thermodynamics , mathematics , quantum mechanics , meteorology , pure mathematics
An investigation has been made of the electric field dependence of the probability for thermal emission from traps in CdS single crystals using a method described in [10] for the determination of the trap parameters. Levels with depths of 0.42, 0.20, and 0.11 eV and capture cross‐sections of 1.5 × 10 −3 , 2 × 10 −14 , and 1.3 × 10 −14 cm 2 have been studied. At field variations from 10 3 to 3 × 10 4 V/cm, the change of the probability for thermal ionization of the traps expected from Frenkel's theory has not been observed.