Ferroelectric polymer tuned two dimensional layered MoTe2 photodetector

Hai Huang, Xudong Wang, Peng Wang, Guangjian Wu, Yan Chen, Caimin Meng, Lei Liao, Jianlu Wang, Weida Hu, Hong Shen, Tie Lin, Jinglan Sun, Xiangjian Meng, Xiaoshuang Chen, Junhao Chu

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)87416-87421
Number of pages6
JournalRSC Advances
Volume6
Issue number90
DOIs
StatePublished - 2016
Externally publishedYes

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