Sensitivity of Fast-Response Nanographite Photodetector at High Temperature

Авторы: Mikheev Gennady M., Zonov Ruslan G., Obraztsov Alexander N., Svirko Yuri P.
Сборник: Conference on Optical Sensors
Серия: OPTICAL SENSORS 2009
Том: 7356
Тезисы
Год издания: 2009
Место издания: Proceedings of SPIE Prague, CZECH REPUBLIC
Первая страница: UNSP 73560X
DOI: 10.1117/12.820549
Аннотация: 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 lambda=1.064 mu m. 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 approximate to 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.
Добавил в систему: Зонов Руслан Геннадьевич

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