Comparative study of natural and synthetic type-IIa diamond radiation detectors

Nicolas B. Zaletaev; Andrey G. Alekseyev; Vladimir N. Amosov; Boris N. Feigelson

doi:10.1117/12.407599

21 November 2000 Comparative study of natural and synthetic type-IIa diamond radiation detectors

Nicolas B. Zaletaev, Andrey G. Alekseyev, Vladimir N. Amosov, Boris N. Feigelson

Proceedings Volume 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II; (2000) https://doi.org/10.1117/12.407599
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Diamond has the highest radiation-damage level among radiation-detector semiconductor materials. Besides, low carbon nucleus charge, Z equals 6, provides tissue equivalence of diamond detectors. However, essential restrictions are imposed on production of natural-diamond detectors by extremely low final yield of selection procedure and corresponding expensiveness of high-quality type IIa natural diamonds. The solution of this problem could be found through the development of single-crystal synthetic-diamond detectors. Basic radiation-response properties of high-pressure high- temperature (HPHT) single-crystal synthetic-diamond (SD) detectors and natural-diamond (ND) detectors made of extremely low nitrogen content (type IIa) material were comparatively studied under hard X-ray, UV, and alpha-particle irradiation. Four orders of magnitude higher steady-state responsivity to radiation has been observed for SD detectors. The gain evaluated under UV irradiation exceeded 6000 (the corresponding value of responsivity was above 1000 A/W). The study of alpha-particle-induced electromotive force (EMF) polarity has revealed the opposite type of surface bending of energy bands in synthetic and natural diamonds. The difference in detector performance could be explained in terms of presented model of charge carrier injection and transport in diamond.

Citation Download Citation

Nicolas B. Zaletaev, Andrey G. Alekseyev, Vladimir N. Amosov, and Boris N. Feigelson "Comparative study of natural and synthetic type-IIa diamond radiation detectors", Proc. SPIE 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II, (21 November 2000); https://doi.org/10.1117/12.407599

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