Evidence for dislocations or related defects present in CdTe and Cd1-xZnxTe crystals

Salah A. Awadalla; Alan W. Hunt; Russell B. Tjossem; Kelvin G. Lynn; Csaba Szeles; Mary Bliss

doi:10.1117/12.450770

18 December 2001 Evidence for dislocations or related defects present in CdTe and Cd_1-xZn_xTe crystals

Salah A. Awadalla, Alan W. Hunt, Russell B. Tjossem, Kelvin G. Lynn, Csaba Szeles, Mary Bliss

Proceedings Volume 4507, Hard X-Ray and Gamma-Ray Detector Physics III; (2001) https://doi.org/10.1117/12.450770
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Thermoelectric Effect Spectroscopy and Thermally Stimulated Current measurements were used to investigate trapping levels in a semi-insulating CdTe and Cd_1-xZn_xTe crystals from multiple ingots grown by vertical Bridgman with over pressure control and high-pressure Bridgman methods. The crystals from different growth methods have different dislocation densities as well as Zn concentrations. The thermal ionization energies of these levels were extracted using both the variable heating rate and initial rise methods; the trapping cross sections were then calculated using the temperature maximum method. We report here that the shallow levels observed at E₁=0.11+/- 0.02 and E₂=0.17+/- 0.02 eV are intrinsic and the latter level is most likely related to the dislocation density.

Citation Download Citation

Salah A. Awadalla, Alan W. Hunt, Russell B. Tjossem, Kelvin G. Lynn, Csaba Szeles, and Mary Bliss "Evidence for dislocations or related defects present in CdTe and Cd_1-xZn_xTe crystals", Proc. SPIE 4507, Hard X-Ray and Gamma-Ray Detector Physics III, (18 December 2001); https://doi.org/10.1117/12.450770

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available