Ultrasensitive Mid-wavelength Infrared Photodetection Based on a Single InAs Nanowire

ACS Nano
Xutao ZhangChennupati Jagadish

Abstract

One-dimensional InAs nanowire (NW)-based photodetectors have been widely studied due to their potential application in mid-wavelength infrared (MWIR) photon detection. However, the limited performance and complicated photoresponse mechanism of InAs NW-based photodetectors have held back their true potential for real application. In this study, we developed ferroelectric polymer P(VDF-TrFE)-coated InAs NW-based photodetectors and demonstrated that the electrostatic field caused by polarized ferroelectric materials modifies the surface electron-hole distribution as well as the band structure of InAs NWs, resulting in ultrasensitive photoresponse and a wide photodetection spectral range. Our single InAs NW photodetectors exhibit a high responsivity ( R) of 1.6 × 104 A W-1 as well as a corresponding detectivity ( D*) of 1.4 × 1012 cm·Hz1/2 W-1 at a light wavelength of 3.5 μm without an applied gate voltage, ∼3-4 orders higher than the maximum value of photoresponsivity reported or commercially used MWIR photodetectors. Moreover, our device shows below band gap photoresponse for 4.3 μm MWIR light with R of 9.6 × 102 A W-1 as well as a corresponding D* of ∼8.5 × 1010 cm·Hz1/2 W-1 at 77 K. Our study shows that this approach is promisi...Continue Reading

References

Oct 3, 2012·Advanced Materials·Emmanuel LhuillierPhilippe Guyot-Sionnest
Dec 22, 2012·Nano Letters·Steven ChuangAli Javey
Sep 17, 2015·Advanced Materials·Xudong WangJunhao Chu
Dec 4, 2015·Physical Chemistry Chemical Physics : PCCP·Yuxiang HanQing Chen
Jul 28, 2016·Nano Letters·Maximilian SpeckbacherGregor Koblmüller
Jul 29, 2016·Nano Letters·Michele B RotaMario Capizzi
Nov 25, 2017·ACS Applied Materials & Interfaces·Jack A Alexander-WebberHannah J Joyce
Apr 20, 2018·Nature Communications·Xuechao YuQi Jie Wang
Jul 6, 2018·ACS Nano·Matthew M AckermanPhilippe Guyot-Sionnest

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Citations

Dec 19, 2020·Advanced Materials·Chanho ParkCheolmin Park
Jan 22, 2021·Nanoscale Research Letters·Xiaomei YaoPingping Chen
Mar 20, 2021·The Journal of Physical Chemistry Letters·Shuai ZhaoZai-Xing Yang
Jul 17, 2020·The Journal of Physical Chemistry Letters·Xutao ZhangWei Lu

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