Affordable Access

Publisher Website

Infrared vibrational mode absorption from thermal donors in germanium

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0921-4526(99)00572-4
Keywords
  • Germanium
  • Thermal Donors
  • Vibrational Modes
  • Bistability
Disciplines
  • Physics

Abstract

Abstract The infrared vibrational absorption attributed to thermal donors (TDs) in Ge has been investigated. Oxygen-doped Ge was annealed at 350°C and the spectrum was recorded after different annealing times. Absorption bands develop mainly around 600 and 780 cm −1, in close correspondence with the increasing TD concentration and the loss of interstitial oxygen (O i). At low temperature the bands are resolved into a number of components which appear sequentially and are assigned to the double donor configuration of TD2–TD9. The assignments are confirmed by the bistable properties of TD2–TD4 revealed in the vibrational spectrum. The low-energy configuration gives rise to three new bands in the same range. The absorption is interpreted as due to vibrational modes of oxygen incorporated in the TDs. The number of oxygen atoms involved is discussed taking account of the evolution of the O i and TD concentrations and of the integrated absorption.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Local vibrational mode spectroscopy of thermal don...

on Physica B Condensed Matter Jan 01, 1999

Isotopic effects on vibrational modes of thermal d...

on Physica B Condensed Matter Jan 01, 2001

Localized vibrational mode infrared absorption of...

on Solid State Communications Jan 01, 1985

Far-infrared magneto-absorption of donor-bound exc...

on Solid State Communications Jan 01, 1977
More articles like this..