Estimation of donor and acceptor levels in Al-doped ZnTe layers from photoluminescence measurement

K. Saito; T. Saeki; X. Han; T. Tanaka; Q. Guo; M. Nishio

doi:10.1117/12.888520

18 February 2011 Estimation of donor and acceptor levels in Al-doped ZnTe layers from photoluminescence measurement

K. Saito, T. Saeki, X. Han, T. Tanaka, Q. Guo, M. Nishio

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 79950I (2011) https://doi.org/10.1117/12.888520
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

High VI/II transport rate ratio for Al-doped ZnTe homoepitaxial layers grown by metalorganic vapor phase epitaxy leads to distinct shallow and deep donor-acceptor-pair (DAP) emissions in the photoluminescence spectrum together with donor-related bound excitonic emission (I_d), independent of the growth conditions. From the analysis of excitation power dependence of shallow DAP emission, donor and acceptor levels are estimated to be ~19.5 and ~53.5meV for Al-doped ZnTe layer, respectively. Thermal quenching effects of Id and shallow DAP were examined based on two step quenching processes, and the derived donor ionization energy is of ~ 19 meV and acceptor level is of ~52.8 meV, which are in good agreement with the result on its excitation power dependence for the latter case.

Citation Download Citation

K. Saito, T. Saeki, X. Han, T. Tanaka, Q. Guo, and M. Nishio "Estimation of donor and acceptor levels in Al-doped ZnTe layers from photoluminescence measurement", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79950I (18 February 2011); https://doi.org/10.1117/12.888520

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