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Proceedings Paper

Natural 2a type diamond based UV photo sensor for 0.19-0.28 mkm
Author(s): A. A. Altukhov; V. V. Eremin; V. A. Kireev; A. V. Mitenkin
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Paper Abstract

A single-cell photo sensor with photoelectrical parameters being close to the theoretical ones for 0.19-0.28 mkm range has been developed. No sensitivity to visible light is presented. Under a high energy visible light range illuminance (threshold irradiance illuminance >1•10-3 W/cm2) photoactivation of trap centers with energy of 1.6-3 eV in forbidden band of diamond is observed. The photoactivation causes minor photosensitivity in visible light range which goes down within 10 minutes after high energy visible light illuminance is ceased. Sensitivity threshold of the sensor under direct sunlight is not lower than 1.3•10-5 W/Hz1/2. In 0.19-0.28 mkm range under λmax=0.225 mkm sensitivity threshold of the sensor is close to the theoretical value =(1-2)•10-14 W/Hz1/2. The sensor has built-in preamplifier (amplification coefficient = 100). The preamplifier is set in so-called "cold area" of the sensor. No additional cooling is required. Physical principles of photo receiving process on natural diamond have been studied. Perspectives of development of a multi-cell natural diamond based sensor have been evaluated.

Paper Details

Date Published: 7 June 2005
PDF: 8 pages
Proc. SPIE 5834, 18th International Conference on Photoelectronics and Night Vision Devices, (7 June 2005); doi: 10.1117/12.628693
Show Author Affiliations
A. A. Altukhov, UralAlmazInvest Joint-Stock Co. (Russia)
V. V. Eremin, UralAlmazInvest Joint-Stock Co. (Russia)
V. A. Kireev, UralAlmazInvest Joint-Stock Co. (Russia)
A. V. Mitenkin, UralAlmazInvest Joint-Stock Co. (Russia)

Published in SPIE Proceedings Vol. 5834:
18th International Conference on Photoelectronics and Night Vision Devices
Anatoly M. Filachov; Vladimir P. Ponomarenko; Alexander I. Dirochka, Editor(s)

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