Ferroelectric polymer tuned two dimensional layered MoTe2 photodetector. Issue 90 (13th September 2016)

• Record Type: Journal Article
• Authors: Huang, Hai; Wang, Xudong; Wang, Peng; Wu, Guangjian; Chen, Yan; Meng, Caimin; Liao, Lei; Wang, Jianlu; Hu, Weida; Shen, Hong; Lin, Tie; Sun, Jinglan; Meng, Xiangjian; Chen, Xiaoshuang; Chu, Junhao
• Is Part Of: RSC advances. Volume 6:Issue 90(2016)
• Page Start: 87416
• Page End: 87421
• Publication Date: 2016-09-13
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra18238k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ferroelectric P(VDF-TrFE) tuned the MoTe2 channel effectively with different direction of polarization. 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 × 10 8 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.