Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588-0656, USA.
Adv Mater. 2017 Feb;29(5). doi: 10.1002/adma.201603969. Epub 2016 Nov 29.
Ultraweak light detection with solid-state and cooling-free photodetectors is important for both fundamental research and practical applications. A general phototransistor architecture for detecting ultraviolet-visible light down to 100 fW cm at room temperature is demonstrated. The exceptional sensitivity stems from an amplification process triggered by incident light. A responsivity of ≈10 A W is achieved.
使用固态和无制冷光电探测器进行超弱光探测对于基础研究和实际应用都很重要。本文展示了一种通用的光电晶体管结构，可在室温下检测低至 100 fW/cm 的紫外-可见光。这种优异的灵敏度源于由入射光触发的放大过程。实现了约 10 A/W 的响应度。
