Commercially available, chemical vapor deposition grown, graphene has been used to realize voltage-gate tunable, microwave power detectors. Corbino disc structures with chrome/gold contacts have been fabricated on top of graphene deposited on P-type silicon substrates with silicon dioxide gate oxides. Devices of varying sizes were used to detect a 433.92 MHz signal. These test structures exhibited a peak power detection sensitivity of 3.25 mV/mW at 292 K and 5.43 mV/mW at 80 K. The improved graphene detectors exceed the sensitivity of previously reported graphene detectors, 0.86 mV/mW, as well as previously explored carbon nanotube bolometers, 0.36 mV/mW.

中文翻译：

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电压门控石墨烯的微波功率检测

商业上可获得的，化学气相沉积生长的石墨烯已用于实现电压门可调的微波功率检测器。具有铬/金触点的Corbino圆盘结构已在具有二氧化硅栅极氧化物的P型硅基板上沉积的石墨烯上制成。使用大小不同的设备检测433.92 MHz信号。这些测试结构在292 K下的峰值功率检测灵敏度为3.25 mV / mW，在80 K下的峰值功率检测灵敏度为5.43 mV / mW。改进的石墨烯检测器超过了先前报道的石墨烯检测器的灵敏度0.86 mV / mW，以及先前探索的碳纳米管辐射热计，0.36 mV / mW。