Reduction of leakage currents in CdZnTe-based x-ray and gamma-ray detectors: a II-VI semiconductor superlattice approach

Y. Chang; C. H. Grein; C. R. Becker; X. J. Wang; S. Sivananthan

doi:10.1117/12.862285

27 August 2010 Reduction of leakage currents in CdZnTe-based x-ray and γ-ray detectors: a II-VI semiconductor superlattice approach

Y. Chang, C. H. Grein, C. R. Becker, X. J. Wang, S. Sivananthan

Author Affiliations +

Proceedings Volume 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII; 78050A (2010) https://doi.org/10.1117/12.862285
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

An approach to the fabrication of CdZnTe-based heterojunction detectors is presented with the primary goal of reducing leakage currents, permitting increased bias voltages and therefore improving x-ray and gamma-ray detector performance. The p-i-n detector architecture is theoretically superior to traditional CdZnTe detectors, and our modeling predicts that superlattice contact layers result in leakage current reductions relative to bulk semiconductor contacts. The benefits arise because the superlattices can be designed to have large carrier effective masses along the electric field direction yet a density of states less than that of a comparable bulk semiconductor.

Citation Download Citation

Y. Chang, C. H. Grein, C. R. Becker, X. J. Wang, and S. Sivananthan "Reduction of leakage currents in CdZnTe-based x-ray and γ-ray detectors: a II-VI semiconductor superlattice approach", Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78050A (27 August 2010); https://doi.org/10.1117/12.862285

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