Hydrogen Terminated Germanene for a Robust Self‐Powered Flexible Photoelectrochemical Photodetector

AbstractAs a rising star in the family of graphene analogues, germanene shows great potential for electronic and optical device applications due to its unique structure and electronic properties. It is revealed that the hydrogen terminated germanene not only maintains a high carrier mobility similar to that of germanene, but also exhibits strong light–matter interaction with a direct band gap, exhibiting great potential for photoelectronics. In this work, few‐layer germanane (GeH) nanosheets with controllable thickness are successfully synthesized by a solution‐based exfoliation–centrifugation route. Instead of complicated microfabrication techniques, a robust photoelectrochemical (PEC)‐type photodetector, which can be extended to flexible device, is developed by simply using the GeH nanosheet film as an active electrode. The device exhibits an outstanding photocurrent density of 2.9 µA cm−2 with zero bias potential, excellent responsivity at around 22 µA W−1 under illumination with intensity ranging from 60 to 140 mW cm−2, as well as short response time (with rise and decay times, tr = 0.24 s and td = 0.74 s). This efficient strategy for a constructing GeH‐based PEC‐type photodetector suggests a path to promising high‐performance, self‐powered, flexible photodetectors, and it also paves the way to a practical application of germanene.

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References

48

[1]

10.1038/nphoton.2010.40

[2]

10.1021/acsnano.8b06629

[3]

10.1038/nnano.2013.100

[4]

10.1038/nnano.2014.215

[5]

Boriskina S. V. Proc. SPIE Int. Soc. Opt. Eng. (2015)

[6]

Electric Field Effect in Atomically Thin Carbon Films

K. S. Novoselov, A. K. Geim, S. V. Morozov et al.

Science 10.1126/science.1102896

[7]

10.1021/nl200758b

[8]

10.1038/nphoton.2013.253

[9]

10.1038/nphoton.2015.23

[10]

10.1039/c8cs00823j

[11]

10.1021/nl203065e

[12]

10.1039/c8cp00870a

[13]

10.1002/smll.201402041

[14]

10.1039/c6tc01141a

[15]

Electrical and Optical Properties of Germanene on Single-Layer BeO Substrate

Xianping Chen, Xiang Sun, Junke Jiang et al.

The Journal of Physical Chemistry C 10.1021/acs.jpcc.6b06161

[16]

10.1002/advs.201800207

[17]

10.1002/adma.201400909

[18]

10.1021/acs.nanolett.5b00085

[19]

10.1088/1367-2630/16/9/095002

[20]

10.1002/smll.201805147

[21]

Stability and Exfoliation of Germanane: A Germanium Graphane Analogue

Elisabeth Bianco, Sheneve Butler, Shishi Jiang et al.

ACS Nano 10.1021/nn4009406

[22]

10.1002/1521-4095(200009)12:17<1278::aid-adma1278>3.0.co;2-y

[23]

10.1021/acsnano.7b00687

[24]

10.1021/nn100734e

[25]

10.1038/nphoton.2013.67

[26]

10.1016/0025-5408(68)90023-8

[27]

10.1002/adma.201604049

[28]

10.1002/adma.201601977

[29]

10.1021/acsnano.9b03278

[30]

10.1002/smll.201900902

[31]

10.1002/adfm.201705237

[32]

10.1002/ppsc.201300040

[33]

A Self‐Powered ZnO‐Nanorod/CuSCN UV Photodetector Exhibiting Rapid Response

Sabina M. Hatch, Joe Briscoe, Steve Dunn

Advanced Materials 10.1002/adma.201204488

[34]

10.1088/0957-4484/22/48/485701

[35]

10.1088/2053-1583/aa7100

[36]

10.1063/1.4890524

[37]

10.1364/ome.4.001067

[38]

10.1039/c5nr09111j

[39]

10.1002/smll.200900576

[40]

10.1002/smll.201803746

[41]

10.1002/anie.201204675

[42]

Ab initiomolecular dynamics for liquid metals

G. Kresse, J. Hafner

Physical Review B 10.1103/physrevb.47.558

[43]

Ab initiomolecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium

G. Kresse, J. Hafner

Physical Review B 10.1103/physrevb.49.14251

[44]

Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set

G. Kresse, J. Furthmüller

Computational Materials Science 10.1016/0927-0256(96)00008-0

[45]

Efficient iterative schemes forab initiototal-energy calculations using a plane-wave basis set

G. Kresse, J. Furthmüller

Physical Review B 10.1103/physrevb.54.11169

[46]

Projector augmented-wave method

P. E. Blöchl

Physical Review B 10.1103/physrevb.50.17953

[47]

From ultrasoft pseudopotentials to the projector augmented-wave method

G. Kresse, D. Joubert

Physical Review B 10.1103/physrevb.59.1758

[48]

10.1103/physrevb.74.245115

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Details

Published: May 10, 2020
Vol/Issue: 16(23)
License: View

Authors

N

Nana Liu

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia

H

Hui Qiao

Hunan Key Laboratory of Micro‐Nano Energy Materials and Devices, and Laboratory for Quantum Engineering and Micro‐Nano Energy Technology School of Physics and Optoelectronic Xiangtan University Hunan 411105 China

K

Kang Xu

BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

Y

Yilian Xi

BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

L

Long Ren

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia; BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

N

Ningyan Cheng

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia

D

Dandan Cui

BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

X

Xiang Qi

Hunan Key Laboratory of Micro‐Nano Energy Materials and Devices, and Laboratory for Quantum Engineering and Micro‐Nano Energy Technology School of Physics and Optoelectronic Xiangtan University Hunan 411105 China

X

Xun Xu

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia; BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

W

Weichang Hao

BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

S

Shi Xue Dou

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia; BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

Y

Yi Du

Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Wollongong NSW 2500 Australia; BUAA‐UOW Joint Research Centre School of Physics Beihang University Beijing 100091 China

Funding

National Natural Science Foundation of China Award: 11874003

Australian Research Council Award: DP160102627

China Scholarship Council

Cite This Article

Nana Liu, Hui Qiao, Kang Xu, et al. (2020). Hydrogen Terminated Germanene for a Robust Self‐Powered Flexible Photoelectrochemical Photodetector. Small, 16(23). https://doi.org/10.1002/smll.202000283

Hydrogen Terminated Germanene for a Robust Self‐Powered Flexible Photoelectrochemical Photodetector

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