Chip-Scalable, Room-Temperature, Zero-Bias, Graphene-Based Terahertz Detectors with Nanosecond Response Time.
Chip-Scalable, Room-Temperature, Zero-Bias, Graphene-Based Terahertz Detectors with Nanosecond Response Time.
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DOI：
10.1021/acsnano.1c06432
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发表时间：
2021-11-23
期刊：
影响因子：
17.1
通讯作者：
Vitiello MS
中科院分区：
文献类型：
--
作者：
Asgari M;Riccardi E;Balci O;De Fazio D;Shinde SM;Zhang J;Mignuzzi S;Koppens FHL;Ferrari AC;Viti L;Vitiello MS
大面积石墨烯的可扩展合成和转移支撑了纳米级光子器件的开发，这些器件非常适合各种领域的新应用，从生物技术到用于医疗保健和运动检测的可穿戴传感器，再到量子传输，通信和计量学。我们报告室温零偏压热电光电探测器，基于单晶和多晶石墨烯生长的化学气相沉积（CVD），可调在整个太赫兹范围（0.1-10太赫兹）通过选择芯片上的图案化纳米天线的谐振。实验结果表明，在室温下，该探测器具有噪声等效功率小于1 nWHz-1/2，响应时间小于5 ns的高效率光探测性能。这种规格的组合比任何以前在亚太赫兹和太赫兹范围内工作的CVD石墨烯光接收器都要好几个数量级。这些最先进的性能和在互补金属氧化物半导体平台上升级到多像素架构的可能性是在商用微测辐射热计阵列尚未覆盖的频率范围内实现具有成本效益的THz相机的起点。
The scalable synthesis and transfer of large-area graphene underpins the development of nanoscale photonic devices ideal for new applications in a variety of fields, ranging from biotechnology, to wearable sensors for healthcare and motion detection, to quantum transport, communications, and metrology. We report room-temperature zero-bias thermoelectric photodetectors, based on single- and polycrystal graphene grown by chemical vapor deposition (CVD), tunable over the whole terahertz range (0.1–10 THz) by selecting the resonance of an on-chip patterned nanoantenna. Efficient light detection with noise equivalent powers <1 nWHz–1/2 and response time ∼5 ns at room temperature are demonstrated. This combination of specifications is orders of magnitude better than any previous CVD graphene photoreceiver operating in the sub-THz and THz range. These state-of-the-art performances and the possibility of upscaling to multipixel architectures on complementary metal-oxide-semiconductor platforms are the starting points for the realization of cost-effective THz cameras in a frequency range still not covered by commercially available microbolometer arrays.
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