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Energy Distribution of Trapping Centers in Vitreous GeSc 3 as Obtained from Transit Time Measurements in the Temperature Range 60 to 300 K
Author(s) -
Calas J.,
Maksoud S. M. Abdel,
Averous M.
Publication year - 1988
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.2221480221
Subject(s) - trapping , range (aeronautics) , center (category theory) , atmospheric temperature range , atomic physics , energy (signal processing) , materials science , transient (computer programming) , distribution function , transit time , physics , chemistry , thermodynamics , crystallography , ecology , operating system , quantum mechanics , computer science , transport engineering , engineering , composite material , biology
The decreasing parts of transient currents associated with photocarriers created by convenient light on one side of the samples are investigated as a function of the temperature in the range 60 to 300 K. From the slope of the two corresponding parts, two parameters, α 1 and α 2 are deduced. From their behavior several trapping center energy distribution models are discussed. The trapping center density is found to obey the law N t ( E ) = CE exp [− E/kT ] 2 . The width of the trapping center energy distribution is about 10 meV and their density reaches 10 21 cm −3 .