Sensitivity of fast-response nanographite photodetector at high temperature

Gennady M. Mikheev; Ruslan G. Zonov; Alexander N. Obraztsov; Yuri P. Svirko

doi:10.1117/12.820549

18 May 2009 Sensitivity of fast-response nanographite photodetector at high temperature

Gennady M. Mikheev, Ruslan G. Zonov, Alexander N. Obraztsov, Yuri P. Svirko

Proceedings Volume 7356, Optical Sensors 2009; 73560X (2009) https://doi.org/10.1117/12.820549
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

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.

Citation Download Citation

Gennady M. Mikheev, Ruslan G. Zonov, Alexander N. Obraztsov, and Yuri P. Svirko "Sensitivity of fast-response nanographite photodetector at high temperature", Proc. SPIE 7356, Optical Sensors 2009, 73560X (18 May 2009); https://doi.org/10.1117/12.820549

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