The modulated photocurrent of amorphous HgCdTe thin films

Lianjie Yu; Yanli Shi; Jisheng Zhuang; Xiongjun Li; Gongrong Deng; Lili Yang; Wenjin He

doi:10.1117/12.900987

8 September 2011 The modulated photocurrent of amorphous HgCdTe thin films

Lianjie Yu, Yanli Shi, Jisheng Zhuang, Xiongjun Li, Gongrong Deng, Lili Yang, Wenjin He

Proceedings Volume 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications; 819341 (2011) https://doi.org/10.1117/12.900987
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

Amorphous HgCdTe thin films were deposited on quartz substrate by RF magnetron sputtering technique. The modulated photocurrent(MPC) of amorphous HgCdTe thin films has been investigated as a function of temperature T, the excitation light intensity F, and applied electric fields E_B. The results indicated that the modulated photocurrent show an activated behavior in the range of 80K-300K. The activated energy ΔE_ap of the modulated photocurrent was found to strongly depend on temperature, whereas it is nearly independent of the applied electric field. The exponent γ in the power law relationship (I_p∝F^γ) between excitation light intensity F and modulated photocurrent of amorphous HgCdTe thin films was obtained at different temperature. The γ depends strongly on the temperature T, but it is independence of applied electric fields E_B. The values of exponent γ of amorphous HgCdTe thin films lie between 0.5 and 1.0. The results indicated a continuous distribution of localized states exists in amorphous HgCdTe thin films.

Citation Download Citation

Lianjie Yu, Yanli Shi, Jisheng Zhuang, Xiongjun Li, Gongrong Deng, Lili Yang, and Wenjin He "The modulated photocurrent of amorphous HgCdTe thin films", Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 819341 (8 September 2011); https://doi.org/10.1117/12.900987

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