Solar-blind UV polarization detection and imaging can reflect more detailed optical information, which is vital for developing next-generation deep UV optoelectronic devices. β-Ga2O3 with ultra-wide bandgap is an ideal candidate for solar-blind UV detection application. However, the bulky nature of Ga2O3 limits its application in miniaturized, integrated and multifunctional devices, and polarization imaging based on Ga2O3 photodetector has not yet been realized. Here, we report a convenient method to prepare 2D β-Ga2O3 flakes via liquid-metal-assisted exfoliation. Benefiting from high crystallinity and polarization-sensitive absorption of prepared ultrathin β-Ga2O3 flake in monoclinic structure, the β-Ga2O3 photodetector exhibits an ultra-fast response speed (100/78 μs for rise/decay time) and a prominent anisotropy ratio (∼2.8) of polarization photoresponse under 265 nm illumination. An unambiguous detection of linearly polarized light has also been realized by the double symmetry-breaking of twisted β-Ga2O3 photodetectors. Moreover, a four-layer twistedly stacked detection system further enables a one-step and well-defined polarization imaging with high resolution (150 × 150 pixels) to acquire spatial polarization information. This work presents a novel strategy for preparing ultrathin 2D gallium oxides and demonstrates a promising route to realize well-defined solar-blind polarization imaging in a simple manner.
REFERENCES
1.
X.
Xu
, J.
Chen
, S.
Cai
, Z.
Long
, Y.
Zhang
, L.
Su
, S.
He
, C.
Tang
, P.
Liu
, and H.
Peng
, “A real-time wearable UV-radiation monitor based on a high-performance p-CuZnS/n-TiO2 photodetector
,” Adv. Mater.
30
(43
), 1803165
(2018
).2.
Z.
Li
, Z.
Li
, C.
Zuo
, and X.
Fang
, “Application of nanostructured TiO2 in UV photodetectors: A review
,” Adv. Mater.
34
(28
), e2109083
(2022
).3.
C.
Xie
, X.
Lu
, X.
Tong
, Z.
Zhang
, F.
Liang
, L.
Lin
, L.
Luo
, and Y.
Wu
, “Recent progress in solar-blind deep-ultraviolet photodetectors based on inorganic ultrawide bandgap semiconductors
,” Adv. Funct. Mater.
29
(9
), 1806006
(2019
).4.
Z.
Li
, T.
Yan
, and X.
Fang
, “Low-dimensional wide-bandgap semiconductors for UV photodetectors
,” Nat. Rev. Mater.
8
(9
), 587
(2023
).5.
X.
Liu
, L.
Gu
, Q.
Zhang
, J.
Wu
, Y.
Long
, and Z.
Fan
, “All-printable band-edge modulated ZnO nanowire photodetectors with ultra-high detectivity
,” Nat. Commun.
5
, 4007
(2014
).6.
Z.
Zhang
, X.
Zhao
, X.
Zhang
, X.
Hou
, X.
Ma
, S.
Tang
, Y.
Zhang
, G.
Xu
, Q.
Liu
, and S.
Long
, “In-sensor reservoir computing system for latent fingerprint recognition with deep ultraviolet photo-synapses and memristor array
,” Nat. Commun.
13
(1
), 6590
(2022
).7.
J.
Xu
, W.
Zheng
, and F.
Huang
, “Gallium oxide solar-blind ultraviolet photodetectors: A review
,” J. Mater. Chem. C
7
(29
), 8753
–8770
(2019
).8.
D.
Kaur
and M.
Kumar
, “A strategic review on gallium oxide based deep-ultraviolet photodetectors: Recent progress and future prospects
,” Adv. Opt. Mater.
9
(9
), 2002160
(2021
).9.
X.
Hou
, Y.
Zou
, M.
Ding
, Y.
Qi
, Z.
Zhang
, X.
Ma
, P.
Tan
, S.
Yu
, X.
Zhou
, and X.
Zhao
, “Review of polymorphous Ga2O3 materials and their solar-blind photodetector applications
,” J. Phys. D: Appl. Phys.
54
(4
), 043001
(2021
).10.
L.
Qian
, Z.
Wu
, Y.
Zhang
, P. T.
Lai
, X.
Liu
, and Y.
Li
, “Ultrahigh-responsivity, rapid-recovery, solar-blind photodetector based on highly nonstoichiometric amorphous gallium oxide
,” ACS Photonics
4
(9
), 2203
(2017
).11.
X.
Hou
, X.
Zhao
, Y.
Zhang
, Z.
Zhang
, Y.
Liu
, Y.
Qi
, P.
Tan
, C.
Chen
, S.
Yu
, M.
Ding
, G.
Xu
, Q.
Hu
, and S.
Long
, “High-performance harsh-environment-resistant GaOX solar-blind photodetectors via defect and doping engineering
,” Adv. Mater.
34
(1
), e2106923
(2022
).12.
K.
Arora
, N.
Goel
, M.
Kumar
, and M.
Kumar
, “Ultrahigh performance of self-powered β-Ga2O3 thin film solar-blind photodetector grown on cost-effective Si substrate using high-temperature seed layer
,” ACS Photonics
5
(6
), 2391
−2401
(2018
).13.
K.
Zhao
, J.
Yang
, P.
Wang
, Z.
Zhou
, H.
Long
, K.
Xin
, C.
Liu
, Z.
Han
, K.
Liu
, and Z.
Wei
, “β-Ga2O3 nanoribbon with ultra-high solar-blind ultraviolet polarization ratio
,” Adv. Mater.
36
(46
), 2406559
(2024
).14.
X.
Chen
, W.
Mu
, Y.
Xu
, B.
Fu
, Z.
Jia
, F.
Ren
, S.
Gu
, R.
Zhang
, Y.
Zheng
, X.
Tao
, and J.
Ye
, “Highly narrow-band polarization-sensitive solar-blind photodetectors based on β-Ga2O3 single crystals
,” ACS Appl. Mater. Interfaces
11
(7
), 7131
(2019
).15.
D.
Zhang
, Z.
Du
, M.
Ma
, W.
Zheng
, W.
Liu
, and F.
Huang
, “Enhanced performance of solar-blind ultraviolet photodetector based on Mg-doped amorphous gallium oxide film
,” Vacuum
159
, 204
(2019
).16.
Y.
Qin
, Z.
Wang
, K.
Sasaki
, J.
Ye
, and Y.
Zhang
, “Recent progress of Ga2O3 power technology: Large-area devices, packaging and applications
,” Jpn. J. Appl. Phys.
62
, SF0801
(2023
).17.
Z.
Wang
, G.
Zhang
, X.
Zhang
, C.
Wu
, Z.
Xia
, H.
Hu
, F.
Wu
, D.
Guo
, and S.
Wang
, “Polarization-sensitive artificial optoelectronic synapse based on anisotropic β-Ga2O3 single crystal for neuromorphic vision systems and information encryption
,” Adv. Opt. Mater.
12
(29
), 2401256
(2024
).18.
L.
Tong
, X.
Huang
, P.
Wang
, L.
Ye
, M.
Peng
, L.
An
, Q.
Sun
, Y.
Zhang
, G.
Yang
, Z.
Li
, F.
Zhong
, F.
Wang
, Y.
Wang
, M.
Motlag
, W.
Wu
, G.
Cheng
, and W.
Hu
, “Stable mid-infrared polarization imaging based on quasi-2D tellurium at room temperature
,” Nat. Commun.
11
(1
), 2308
(2020
).19.
B.
Salahieh
, Z.
Chen
, J. J.
Rodriguez
, and R.
Liang
, “Multi-polarization fringe projection imaging for high dynamic range objects
,” Opt. Express
22
(8
), 10064
(2014
).20.
L.
Zeng
, Q.
Chen
, Z.
Zhang
, D.
Wu
, H.
Yuan
, Y.
Li
, W.
Qarony
, S.
Lau
, L.
Luo
, and Y.
Tsang
, “Multilayered PdSe2/perovskite Schottky junction for fast, self-powered, polarization-sensitive, broadband photodetectors, and image sensor application
,” Adv. Sci. (Weinh.)
6
(19
), 1901134
(2019
).21.
A.
Zavabeti
, J.
Ou
, B.
Carey
, N.
Syed
, R.
Orrell-Trigg
, E. L. H.
Mayes
, C.
Xu
, O.
Kavehei
, A.
O'Mullane
, R. B.
Kaner
, K.
Kalantar-zadeh
, and T.
Daeneke
, “A liquid metal reaction environment for the room-temperature synthesis of atomically thin metal oxides
,” Science
358
(6361
), 332
(2017
).22.
J.
Li
, X.
Zhang
, B.
Yang
, C.
Zhang
, T.
Xu
, L.
Chen
, L.
Yang
, X.
Jin
, and B.
Liu
, “Template approach to large-area non-layered Ga-group two-dimensional crystals from printed skin of liquid gallium
,” Chem. Mater.
33
(12
), 4568
(2021
).23.
Y.
Zhang
, Q.
He
, H.
Yang
, Z.
Li
, H.
Jiang
, Y.
Zhang
, X.
Luo
, and Y.
Zheng
, “Liquid-metal-based spin-coating exfoliation for atomically thin metal oxide synthesis
,” Nano Lett.
24
(21
), 6247
–6254
(2024
).24.
A.
Jain
, P.
Bharadwaj
, S.
Heeg
, M.
Parzefall
, T.
Taniguchi
, K.
Watanabe
, and L.
Novotny
, “Minimizing residues and strain in 2D materials transferred from PDMS
,” Nanotechnology
29
(26
), 265203
(2018
).25.
Y.
Choi
, W.
Kim
, Y.
Park
, S.
Lee
, D.
Bae
, Y.
Lee
, G.
Park
, W.
Choi
, N.
Lee
, and J.
Kim
, “Catalytic growth of β-Ga2O3 nanowires by arc discharge
,” Adv. Mater.
12
(10
), 746
(2000
).26.
X.
Zhang
, Y.
Li
, W.
Mu
, W.
Bai
, X.
Sun
, M.
Zhao
, Z.
Zhang
, F.
Shan
, and Z.
Yang
, “Advanced tape-exfoliated method for preparing large-area 2D monolayers: A review
,” 2D Mater.
8
(3
), 032002
(2021
).27.
Y.
Huang
, Y.
Pan
, R.
Yuan
, L.
Bao
, L.
Meng
, H.
Luo
, Y.
Cai
, G.
Liu
, W.
Zhao
, and Z.
Zhou
, “Universal mechanical exfoliation of large-area 2D crystals
,” Nat. Commun.
11
(1
), 2938
(2020
).28.
Y.
Wang
and M.
Chhowalla
, “Making clean electrical contacts on 2D transition metal dichalcogenides
,” Nat. Rev. Phys.
4
(2
), 101
(2021
).29.
Z.
Ji
, J.
Du
, J.
Fan
, and W.
Wang
, “Gallium oxide films for filter and solar-blind UV detector
,” Opt. Mater.
28
(4
), 415
(2006
).30.
S.
Oh
, C.
Kim
, and J.
Kim
, “High responsivity β-Ga2O3 metal−semiconductor−metal solar-blind photodetectors with ultraviolet transparent graphene electrodes
,” ACS Photonics
5
(3
), 1123
(2018
).31.
X.
Chen
, F.
Ren
, S.
Gu
, and J.
Ye
, “Review of gallium-oxide-based solar-blind ultraviolet photodetectors
,” Photonics Res.
7
(4
), 381
(2019
).32.
J.
Ma
, O.
Lee
, and G.
Yoo
, “Effect of Al2O3 passivation on electrical properties of β-Ga2O3 field-effect transistor
,” IEEE J. Electron Dev. Soc.
7
(1
), 512
(2019
).33.
Y.
Bu
, J.
Wei
, Q.
Sai
, and H.
Qi
, “The origin of twin in (100) plane growth β-Ga2O3 crystal by EFG
,” CrystEngComm
25
(24
), 3556
(2023
).34.
K.
Zhang
, Z.
Xu
, J.
Zhao
, H.
Wang
, J.
Hao
, S.
Zhang
, H.
Cheng
, and B.
Dong
, “Anisotropies of angle-resolved polarized Raman response identifying in low miller index β-Ga2O3 single crystal
,” Appl. Surf. Sci.
581
, 152426
(2022
).35.
L.
Li
, S.
Yan
, W.
Ma
, J.
Zhang
, S.
Zhang
, M.
Jiang
, L.
Gao
, W.
Tang
, and Z.
Liu
, “Angle-resolved polarization Raman spectroscopy of β-Ga2O3 and their application in sensitive solar-blind photodetection
,” Appl. Phys. Lett.
125
(14
), 141102
(2024
).36.
N.
Ueda
, H.
Hosono
, R.
Waseda
, and H.
Kawazoe
, “Anisotropy of electrical and optical properties in single crystals
,” Appl. Phys. Lett.
71
(7
), 933
(1997
).37.
A.
Mock
, R.
Korlacki
, C.
Briley
, V.
Darakchieva
, B.
Monemar
, Y.
Kumagai
, K.
Goto
, M.
Higashiwaki
, and M.
Schubert
, “Band-to-band transitions, selection rules, effective mass, and excitonic contributions in monoclinic β-Ga2O3
,” Phys. Rev. B
96
(24
), 245205
(2017
).38.
M.
Schubert
, R.
Korlacki
, S.
Knight
, T.
Hofmann
, S.
Schoeche
, V.
Darakchieva
, E.
Janzen
, B.
Monemar
, D.
Gogova
, Q.
Thieu
, R.
Togashi
, H.
Murakami
, Y.
Kumagai
, K.
Goto
, A.
Kuramata
, S.
Yamakoshi
, and M.
Higashiwaki
, “Anisotropy, phonon modes, and free charge carrier parameters in monoclinic β-gallium oxide single crystals
,” Phys. Rev. B
93
(12
), 125209
(2016
).39.
W.
Zhong
, Y.
Liu
, X.
Yang
, C.
Wang
, W.
Xin
, Y.
Li
, W.
Liu
, and H.
Xu
, “Suspended few-layer GaS photodetector with sensitive fast response
,” Mater. Des.
212
, 110233
(2021
).40.
W.
Xin
, W.
Zhong
, Y.
Shi
, Y.
Shi
, J.
Jing
, T.
Xu
, J.
Guo
, W.
Liu
, Y.
Li
, Z.
Liang
, X.
Xin
, J.
Cheng
, W.
Hu
, H.
Xu
, and Y.
Liu
, “Low-dimensional-materials-based photodetectors for next-generation polarized detection and imaging
,” Adv. Mater.
36
(7
), 2306772
(2024
).41.
Y.
Xiong
, Y.
Wang
, R.
Zhu
, H.
Xu
, C.
Wu
, J.
Chen
, Y.
Ma
, Y.
Liu
, Y.
Chem
, K.
Watanabe
, T.
Taniguchi
, M.
Shi
, X.
Chen
, Y.
Lu
, P.
Zhan
, Y.
Hao
, and F.
Xu
, “Twisted black phosphorus–based van der Waals stacks for fiber-integrated polarimeters
,” Sci. Adv.
8
(18
), eabo0375
(2022
).42.
M.
Dai
, C.
Wang
, B.
Qiang
, F.
Wang
, M.
Ye
, S.
Han
, Y.
Luo
, and Q.
Wang
, “On-chip mid-infrared photothermoelectric detectors for full-Stokes detection
,” Nat. Commun.
13
(1
), 4560
(2022
).43.
W.
Zhong
, Y.
Liu
, H.
Huang
, Z.
Sun
, W.
Xin
, W.
Liu
, X.
Zhao
, S.
Long
, and H.
Xu
, “Ultrathin Ga2O3 photodetector with fast response and trajectory tracking capability fabricated by liquid metal oxidation
,” Nano Lett.
24
(43
), 13769
(2024
).44.
M.
Yu
, C.
Lv
, J.
Yu
, Y.
Shen
, L.
Yuan
, J.
Hu
, S.
Zhang
, H.
Cheng
, Y.
Zhang
, and R.
Jia
, “High-performance photodetector based on sol–gel epitaxially grown α/β-Ga2O3 thin films
,” Mater. Today Commun.
25
, 101532
(2020
).45.
X.
Liu
, S.
Li
, Z.
Li
, F.
Cao
, L.
Su
, D. V.
Shtansky
, and X.
Fang
, “Enhanced response speed in 2D perovskite oxides-based photodetectors for UV imaging through surface/interface carrier-transport modulation
,” ACS Appl. Mater. Interfaces
14
(43
), 48936
–48947
(2022
).46.
Q.
Bai
, X.
Huang
, Y.
Guo
, S.
Du
, C.
Sun
, L.
Hu
, R.
Zheng
, Y.
Yang
, A.
Jin
, and J.
Li
, “Gap-surface-plasmon induced polarization photoresponse for MoS2 based photodetector
,” Nano Res.
16
(7
), 10272
–10278
(2023
).47.
X.
Zhang
, M.
Dai
, W.
Deng
, Y.
Zhang
, and Q.
Wang
, “A broadband, self-powered, and polarization-sensitive PdSe2 photodetector based on asymmetric van der Waals contacts
,” Nanophotonics
12
(3
), 607
(2023
).© 2025 Author(s). Published under an exclusive license by AIP Publishing.
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