Annealing study of Cd(1-x)Zn(x)Te crystals by IR transmission and micro-Raman spectrum

Yanfeng Wei; Weizheng Fang; Congfeng Liu; Jianrong Yang; Li He

doi:10.1117/12.451924

5 December 2002 Annealing study of Cd_1-xZn_xTe crystals by IR transmission and micro-Raman spectrum

Yanfeng Wei, Weizheng Fang, Congfeng Liu, Jianrong Yang, Li He

Proceedings Volume 4795, Materials for Infrared Detectors II; (2002) https://doi.org/10.1117/12.451924
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The Cd-annealing effects on Cd_1-xZn_xTe wafers were studied by means of IR transmission and micro-Raman spectrum. The experiments and theoretical analysis demonstrated that the free carrier absorption related to the Cd vacancies resulted in the IR extinction as observed in the transmission spectra. The Raman spectra showed that Raman scattering is a more sensitive method to detect the fine Te precipitates in the Cd_1-xZn_xTe substrates. The Raman scattering peaks related to the Te precipitates could be found in both the as grown and the annealed samples. The relative intensity of the Te scattering peaks became weaker after Cd-annealing. This result also indicated that it was quite difficult to eliminate the fine Te precipitates entirely through annealing process.

Citation Download Citation

Yanfeng Wei, Weizheng Fang, Congfeng Liu, Jianrong Yang, and Li He "Annealing study of Cd_1-xZn_xTe crystals by IR transmission and micro-Raman spectrum", Proc. SPIE 4795, Materials for Infrared Detectors II, (5 December 2002); https://doi.org/10.1117/12.451924

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