Identification of Urbach, acceptor impurity, and phonon-assisted components of the optical absorption band tail of n-type InSb

G. R. Allan, H. A. MacKenzie, J. J. Hunter, B. S. Wherrett

Research output: Contribution to journalArticle

Abstract

New measurements are presented of the interband absorption edge, in the range 0.01 to 100 cm-1, for uncompensated n-type InSb obtained using a photo-Hall technique. A spectral Urbach edge is observed in the range of sample temperature (20 to 77 K) and it is shown that the form of the experimental results derives from a broadening due to the interaction of acceptor impurity states. A phonon-assisted component is also identified at sample temperatures above 40 K.

Original languageEnglish
Pages (from-to)383-389
Number of pages7
JournalPhysica Status Solidi B - Basic Research
Volume149
Issue number1
Publication statusPublished - Sep 1988

Fingerprint Dive into the research topics of 'Identification of Urbach, acceptor impurity, and phonon-assisted components of the optical absorption band tail of n-type InSb'. Together they form a unique fingerprint.

  • Cite this