Natural 2a type diamond based UV photo sensor for 0.19-0.28 mkm

A. A. Altukhov; V. V. Eremin; V. A. Kireev; A. V. Mitenkin

doi:10.1117/12.628693

7 June 2005 Natural 2a type diamond based UV photo sensor for 0.19-0.28 mkm

A. A. Altukhov, V. V. Eremin, V. A. Kireev, A. V. Mitenkin

Proceedings Volume 5834, 18th International Conference on Photoelectronics and Night Vision Devices; (2005) https://doi.org/10.1117/12.628693
Event: 18th International Conference on Photoelectronics and Night Vision Devices and Quantum Informatics 2004, 2004, Moscow, Russian Federation

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/Hz^1/2. In 0.19-0.28 mkm range under λ_max=0.225 mkm sensitivity threshold of the sensor is close to the theoretical value =(1-2)•10^-14 W/Hz^1/2. 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.

Citation Download Citation

A. A. Altukhov, V. V. Eremin, V. A. Kireev, and A. V. Mitenkin "Natural 2a type diamond based UV photo sensor for 0.19-0.28 mkm", Proc. SPIE 5834, 18th International Conference on Photoelectronics and Night Vision Devices, (7 June 2005); https://doi.org/10.1117/12.628693

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