Narrow Gap HgCdTe Absorption Behavior Near the Band Edge Including Nonparabolicity and the Urbach Tail
Abstract
An analytical model describing the absorption behavior of HgCdTe is developed that simultaneously considers the contributions from nonparabolic conduction and light hole bands as calculated by a 14 X 14 matrix k-p method as well as the Urbach tail. This model is capable of smoothly fitting experimental absorption coefficient curves over energies ranging from the Urbach tail region to the intrinsic absorption region up to 300 meV above the band gap. Comparisons to the experimental results give good agreement.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 10, 2006
- Accession Number
- ADA468548
Entities
People
- Christoph H. Grein
- M. E. Flatté
- Sivalingam Sivananthan
- Suman Guha
- V. Nathan
- Yong Chang
Organizations
- University of Illinois at Chicago