Ferroelectric polymer tuned two dimensional layered MoTe2 photodetector
Ferroelectric polymer tuned two dimensional layered MoTe2 photodetector
复制标题
铁电聚合物调谐二维层状MoTe2光电探测器
DOI：
10.1039/c6ra18238k
复制
发表时间：
2016-01-01
期刊：
影响因子：
3.9
通讯作者：
Chu, Junhao
中科院分区：
文献类型：
--
作者：
Huang, Hai;Wang, Xudong;Chu, Junhao
近年来，基于二维材料的光电探测器引起了广泛的关注。在这项工作中，制造了带有铁电聚合物 P(VDF-TrFE) 顶栅的几层 MoTe2 基光电晶体管。铁电体的剩余极化可以有效地耗尽沟道，从而将器件的暗电流降低一个数量级以上。因此，MoTe2 光电晶体管对可见光和近红外光具有明显的光响应。该器件具有较宽的光响应范围（0.6–1.5 μm），对于 1060 nm 光，响应度和探测度达到 16.4 mA W−1 和 1.94 × 108 Jones。该器件无需外部栅极电压即可工作，这使得实际应用具有更高的可靠性和更低的功耗。
Two dimensional material based photodetectors have attracted wide attention in recent years. In this work, a few-layer MoTe2 based phototransistor with a ferroelectric polymer P(VDF-TrFE) topgate is fabricated. The remanent polarization of the ferroelectrics could deplete the channel effectively to decrease the dark current of the device by more than one magnitude. As a result, the MoTe2 phototransistor has an appreciable photoresponse for visible light and near infrared. The device has a broad photoresponse range (0.6–1.5 μm), the responsivity and detectivity reach 16.4 mA W−1 and 1.94 × 108 Jones for 1060 nm light. The device works without an external gate voltage, which makes for higher reliability and lower power dissipation for practical application.