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Proceedings Paper

Sensitivity of fast-response nanographite photodetector at high temperature
Author(s): Gennady M. Mikheev; Ruslan G. Zonov; Alexander N. Obraztsov; Yuri P. Svirko
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Paper Abstract

We studied performance of a fast-response nanographite film photodetector (PD) in the temperature range of 300- 1000 K. In experiment, we measured the magnitude of the electric signal generated in nanographite film (NGF) under irradiation of intense nanosecond laser pulses at λ=1.064 μm. In vacuum, the measurements of the PD sensitivity were performed in the temperature range of 300-800 K. We showed experimentally that the PD sensitivity at 300 K was about 30% higher than that at 625 K and 50% higher than that at 740 K. At T>625 K, the magnitude of the light-induced signal decreases as a linear function of temperature and vanish at T ≈ 1000 K. In atmospheric conditions, we observed a stable operation of the NGF-based PD during several tens of hours in the temperature range from 300 to 580 K. However, at higher temperature, degradation of the NG film resulted in a drop in the PD sensitivity.

Paper Details

Date Published: 18 May 2009
PDF: 8 pages
Proc. SPIE 7356, Optical Sensors 2009, 73560X (18 May 2009); doi: 10.1117/12.820549
Show Author Affiliations
Gennady M. Mikheev, Institute of Applied Mechanics (Russian Federation)
Ruslan G. Zonov, Institute of Applied Mechanics (Russian Federation)
Alexander N. Obraztsov, Moscow State Univ. (Russian Federation)
Yuri P. Svirko, Joensuu Univ. (Finland)

Published in SPIE Proceedings Vol. 7356:
Optical Sensors 2009
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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