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Optical Absorption Studies of Plastically Deformed InSb
Author(s) -
Vignaud D.,
Farvacque J. L.
Publication year - 1984
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.2221250241
Subject(s) - dislocation , absorption edge , absorption (acoustics) , materials science , enhanced data rates for gsm evolution , trapping , piezoelectricity , condensed matter physics , doping , absorption spectroscopy , optics , molecular physics , crystallography , optoelectronics , chemistry , physics , band gap , composite material , telecommunications , ecology , computer science , biology
Optical absorption studies of edge‐type dislocations are carried out on n‐ and p‐type, weakly doped InSb. Edge‐type dislocations are selectively introduced by means of uniaxial compression at 220 °C. The presence of dislocation induces two main changes in the optical absorption spectra: i) absorption tails just before the band edge, which are associated with the strong internal piezoelectric fields and ii) reduction of the intraband absorption, which are explained by the presence of trapping levels bound to the dislocations.