학술논문
Determination of Fe/sup 2+/ and Fe/sup 3+/ concentrations in semi-insulating InP:Fe
Document Type
Conference
Author
Source
LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels Indium Phosphide and Related Materials, 1992., Fourth International Conference on. :638-641 1992
Subject
Language
Abstract
As the Fermi level in semi-insulating InP is close to the iron acceptor level, both charge states-Fe/sup 2+/ as well as Fe/sup 3+/ corresponding to the acceptor level occupied/unoccupied by an electron-are present. W. Meier et al. (1991) presented a method based on absorption measurements in the near-bandgap region of InP to determine the concentration of both charge states separately. In the present work, the authors compare iron concentrations obtained by this method with the results from intracenter absorption, DLTS (deep level transient spectroscopy), electron paramagnetic resonance, Hall effect measurements, and glow discharge mass spectroscopy. They present a new calibration for the optical absorption cross sections.ETX