1. State Key Laboratory for Manufacturing Systems Engineering, Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, The International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology, Xi’an Jiaotong University, Xi’an 710049, China 2. School of Materials Science & Engineering, Changzhou University, Changzhou 213164, China
Flexible electronics/spintronics attracts researchers’ attention for their application potential abroad in wearable devices, healthcare, and other areas. Those devices’ performance (speed, energy consumption) is highly dependent on manipulating information bits (spin-orientation in flexible spintronics). In this work, we established an organic photovoltaic (OPV)/ZnO/Pt/Co/Pt heterostructure on flexible PET substrates with perpendicular magnetic anisotropy (PMA). Under sunlight illumination, the photoelectrons generated from the OPV layer transfer into the PMA heterostructure, then they reduce the PMA strength by enhancing the interfacial Rashba field accordingly. The coercive field (Hc) reduces from 800 Oe to 500 Oe at its maximum, and the magnetization can be switched up and down reversibly. The stability of sunlight control of magnetization reversal under various bending conditions is also tested for flexible spintronic applications. Lastly, the voltage output of sunlight-driven PMA is achieved in our prototype device, exhibiting an excellent angular dependence and opening a door towards solar-driven flexible spintronics with much lower energy consumption.
T. Zheng X. , Yang Z. , Sutarlie L. , Thangaveloo M. , Yu Y. , Salleh N. , S. Chin J. , Xiong Z. , L. Becker D. , J. Loh X. , C. K. Tee B. , Su X. . Battery-free and AI-enabled multiplexed sensor patches for wound monitoring. Sci. Adv., 2023, 9(24): eadg6670 https://doi.org/10.1126/sciadv.adg6670
2
Zhao Y. , Peng R. , Guo Y. , Liu Z. , Dong Y. , Zhao S. , Li Y. , Dong G. , Hu Y. , Zhang J. , Peng Y. , Yang T. , Tian B. , Zhao Y. , Zhou Z. , Jiang Z. , Luo Z. , Liu M. . Ultraflexible and malleable Fe/BaTiO3 multiferroic heterostructures for functional devices. Adv. Funct. Mater., 2021, 31(16): 2009376 https://doi.org/10.1002/adfm.202009376
3
Cao Y. , Wang N. , Tian H. , Guo J. , Wei Y. , Chen H. , Miao Y. , Zou W. , Pan K. , He Y. , Cao H. , Ke Y. , Xu M. , Wang Y. , Yang M. , Du K. , Fu Z. , Kong D. , Dai D. , Jin Y. , Li G. , Li H. , Peng Q. , Wang J. , Huang W. . Perovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures. Nature, 2018, 562(7726): 249 https://doi.org/10.1038/s41586-018-0576-2
4
Ota S.Ando A.Chiba D., A flexible giant magnetoresistive device for sensing strain direction, Nat. Electron. 1(2), 124 (2018)
5
Park S. , W. Heo S. , Lee W. , Inoue D. , Jiang Z. , Yu K. , Jinno H. , Hashizume D. , Sekino M. , Yokota T. , Fukuda K. , Tajima K. , Someya T. . Self-powered ultra-flexible electronics via nano-grating-patterned organic photovoltaics. Nature, 2018, 561(7724): 516 https://doi.org/10.1038/s41586-018-0536-x
Lei Y.Chen Y.Zhang R.Li Y.Yan Q.Lee S.Yu Y.Tsai H.Choi W.Wang K.Luo Y.Gu Y.Zheng X.Wang C.Wang C.Hu H.Li Y.Qi B.Lin M.Zhang Z.A. Dayeh S.Pharr M.P. Fenning D.H. Lo Y.Luo J.Yang K.Yoo J.Nie W.Xu S., A fabrication process for flexible single-crystal perovskite devices, Nature 583(7818), 790 (2020)
8
Viventi J. , H. Kim D. , Vigeland L. , S. Frechette E. , A. Blanco J. , S. Kim Y. , E. Avrin A. , R. Tiruvadi V. , W. Hwang S. , C. Vanleer A. , F. Wulsin D. , Davis K. , E. Gelber C. , Palmer L. , Van der Spiegel J. , Wu J. , Xiao J. , Huang Y. , Contreras D. , A. Rogers J. , Litt B. . Flexible, foldable, actively multiplexed, high-density electrode array for mapping brain activity in vivo. Nat. Neurosci., 2011, 14(12): 1599 https://doi.org/10.1038/nn.2973
9
Cai X.Liu Y.Zha J.Tan F.Zhang B.Yan W.Zhao J.Lu B.Zhou J.Tan C., A flexible and safe planar zinc-ion micro-battery with ultrahigh energy density enabled by interfacial engineering for wearable sensing systems, Adv. Funct. Mater. 33(29), 2303009 (2023)
10
Zhang Y. , Wang Y. , Wang C. , Zhao Y. , Jing W. , Wang S. , Zhang Y. , Xu X. , Zhang F. , Yu K. , Mao Q. , Lin Q. , Han F. , Tian B. , Zhou Z. , Zhao L. , Ren W. , Liu M. , Jiang Z. . Superior performances via designed multiple embossments within interfaces for flexible pressure sensors. Chem. Eng. J., 2023, 454: 139990 https://doi.org/10.1016/j.cej.2022.139990
11
Dong G. , Zhou Z. , Xue X. , Zhang Y. , Peng B. , Guan M. , Zhao S. , Hu Z. , Ren W. , G. Ye Z. , Liu M. . Ferroelectric phase transition induced a large FMR tuning in self-assembled BaTiO3:Y3Fe5O12 multiferroic composites. ACS Appl. Mater. Interfaces, 2017, 9(36): 30733 https://doi.org/10.1021/acsami.7b06876
12
Wu C. , Pan X. , Lin F. , Cui Z. , He Y. , Chen G. , Zeng Y. , Liu X. , Chen Q. , Sun D. , Hai Z. . TiB2/SiCN thin-film strain gauges fabricated by direct writing for high-temperature application. IEEE Sens. J., 2022, 22(12): 11517 https://doi.org/10.1109/JSEN.2022.3172346
Yang H. , Ormaza M. , Chi Z. , Dolan E. , Ingla-Aynes J. , K. Safeer C. , Herling F. , Ontoso N. , Gobbi M. , Martin-Garcia B. , Schiller F. , E. Hueso L. , Casanova F. . Gate-tunable spin hall effect in an all-light-element heterostructure: Graphene with copper oxide. Nano Lett., 2023, 23(10): 4406 https://doi.org/10.1021/acs.nanolett.3c00687
15
Han J. , Zhang P. , T. Hou J. , A. Siddiqui S. , Liu L. . Mutual control of coherent spin waves and magnetic domain walls in a magnonic device. Science, 2019, 366(6469): 1121 https://doi.org/10.1126/science.aau2610
16
Fulara H. , Zahedinejad M. , Khymyn R. , A. Awad A. , Muralidhar S. , Dvornik M. , Akerman J. . Spin–orbit torque-driven propagating spin waves. Sci. Adv., 2019, 5(9): eaax8467 https://doi.org/10.1126/sciadv.aax8467
17
Shao X. , Zhu C. , Kumar P. , Wang Y. , Lu J. , Cha M. , Yao L. , Cao Y. , Mao X. , Heinz H. , A. Kotov N. . Voltage modulated untwist deformations and multispectral optical effects from ion intercalation into chiral ceramic nanoparticles. Adv. Mater., 2023, 35(16): 2370116 https://doi.org/10.1002/adma.202370116
18
J. Peng W. , Wang L. , J. Li Y. , J. Du Y. , X. He Z. , Y. Wang C. , F. Zhao Y. , D. Jiang Z. , Y. Zhou Z. , Liu M. . Voltage manipulation of synthetic antiferromagnetism in CoFeB/Ta/CoFeB heterostructure for spintronic application. Adv. Mater. Interfaces, 2022, 9(14): 2200007 https://doi.org/10.1002/admi.202200007
19
Peng B. , Lu Q. , Tang H. , Zhang Y. , Cheng Y. , Qiu R. , Guo Y. , Zhou Z. , Liu M. . Large in-plane piezo-strain enhanced voltage control of magnetic anisotropy in Si-compatible multiferroic thin films. Mater. Horiz., 2022, 9(12): 3013 https://doi.org/10.1039/D2MH01020H
20
Prasad B. , L. Huang Y. , V. Chopdekar R. , Chen Z. , Steffes J. , Das S. , Li Q. , Yang M. , C. Lin C. , Gosavi T. , E. Nikonov D. , Q. Qiu Z. , W. Martin L. , D. Huey B. , Young I. , Iniguez J. , Manipatruni S. , Ramesh R. . Ultralow voltage manipulation of ferromagnetism. Adv. Mater., 2020, 32(28): 2001943 https://doi.org/10.1002/adma.202001943
21
Song C. , Cui B. , Li F. , J. Zhou X. , Pan F. . Recent progress in voltage control of magnetism: Materials, mechanisms, and performance. Prog. Mater. Sci., 2017, 87: 33 https://doi.org/10.1016/j.pmatsci.2017.02.002
22
M. Hu J. , Li Z. , Q. Chen L. , W. Nan C. . High-density magnetoresistive random access memory operating at ultralow voltage at room temperature. Nat. Commun., 2011, 2(1): 553 https://doi.org/10.1038/ncomms1564
23
Yang S. , W. Son J. , S. Ju T. , M. Tran D. , S. Han H. , Park S. , H. Park B. , W. Moon K. , Hwang C. . Magnetic skyrmion transistor gated with voltage-controlled magnetic anisotropy. Adv. Mater., 2023, 35(9): 2208881 https://doi.org/10.1002/adma.202208881
24
J. Kim H. , W. Moon K. , X. Tran B. , Yoon S. , Kim C. , Yang S. , H. Ha J. , An K. , S. Ju T. , I. Hong J. , Hwang C. . Field-free switching of magnetization by tilting the perpendicular magnetic anisotropy of Gd/Co multilayers. Adv. Funct. Mater., 2022, 32(26): 2112561 https://doi.org/10.1002/adfm.202112561
25
Tan Z. , de Rojas J. , Martins S. , Lopeandia A. , Quintana A. , Cialone M. , Herrero-Martin J. , Meersschaut J. , Vantomme A. , L. Costa-Kramer J. , Sort J. , Menendez E. . Frequency-dependent stimulated and post-stimulated voltage control of magnetism in transition metal nitrides: Towards brain-inspired magneto-ionics. Mater. Horiz., 2023, 10: 88 https://doi.org/10.1039/D2MH01087A
26
Ameziane M. , Mansell R. , Havu V. , Rinke P. , van Dijken S. . Lithium-ion battery technology for voltage control of perpendicular magnetization. Adv. Funct. Mater., 2022, 32(29): 2113118 https://doi.org/10.1002/adfm.202113118
27
Huang M. , U. Hasan M. , Klyukin K. , Zhang D. , Lyu D. , Gargiani P. , Valvidares M. , Sheffels S. , Churikova A. , Buttner F. , Zehner J. , Caretta L. , Y. Lee K. , Chang J. , P. Wang J. , Leistner K. , Yildiz B. , S. D. Beach G. . Voltage control of ferrimagnetic order and voltage-assisted writing of ferrimagnetic spin textures. Nat. Nanotechnol., 2021, 16(9): 981 https://doi.org/10.1038/s41565-021-00940-1
28
Zhao S. , Zhou Z. , Li C. , Peng B. , Hu Z. , Liu M. . Low-voltage control of (Co/Pt)x perpendicular magnetic anisotropy heterostructure for flexible spintronics. ACS Nano, 2018, 12(7): 7167 https://doi.org/10.1021/acsnano.8b03097
29
Zhao S. , Wang L. , Zhou Z. , Li C. , Dong G. , Zhang L. , Peng B. , Min T. , Hu Z. , Ma J. , Ren W. , G. Ye Z. , Chen W. , Yu P. , W. Nan C. , Liu M. . Ionic liquid gating control of spin reorientation transition and switching of perpendicular magnetic anisotropy. Adv. Mater., 2018, 30(30): 1801639 https://doi.org/10.1002/adma.201801639
30
Peng B. , Zhou Z. , Nan T. , Dong G. , Feng M. , Yang Q. , Wang X. , Zhao S. , Xian D. , D. Jiang Z. , Ren W. , G. Ye Z. , X. Sun N. , Liu M. . Deterministic switching of perpendicular magnetic anisotropy by voltage control of spin reorientation transition in (Co/Pt)3/Pb(Mg1/3Nb2/3)O3-PbTiO3 multiferroic heterostructures. ACS Nano, 2017, 11(4): 4337 https://doi.org/10.1021/acsnano.7b01547
31
Peng B. , Feng M. , Yang Q. , Zhao S. , Zhang Y. , Zhou Z. , Liu M. . Ferroelastic strain-mediated nonvolatile tuning of perpendicular magnetic anisotropy in (Co/Pt)3/(1 1 1) Pb(Mg1/3Nb2/3)O3-PbTiO3 multiferroic heterostructures. IEEE Magn. Lett., 2017, 8: 1 https://doi.org/10.1109/LMAG.2017.2721925
32
Yang Q. , Zhou Z. , Wang L. , Zhang H. , Cheng Y. , Hu Z. , Peng B. , Liu M. . Ionic gel modulation of RKKY interactions in synthetic anti-ferromagnetic nanostructures for low power wearable spintronic devices. Adv. Mater., 2018, 30(22): 1800449 https://doi.org/10.1002/adma.201800449
33
Yang Q. , Wang L. , Zhou Z. , Wang L. , Zhang Y. , Zhao S. , Dong G. , Cheng Y. , Min T. , Hu Z. , Chen W. , Xia K. , Liu M. . Ionic liquid gating control of RKKY interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 multilayers. Nat. Commun., 2018, 9(1): 991 https://doi.org/10.1038/s41467-018-03356-z
34
Wang X.Yang Q.Wang L.Zhou Z.Min T.Liu M.X. Sun N., E-field control of the RKKY interaction in FeCoB/Ru/FeCoB/PMN-PT (011) multiferroic heterostructures, Adv. Mater. 30(39), 1803612 (2018)
35
F. Zhao Y. , J. Du Y. , Wang L. , Chen K. , L. Luo Z. , S. Yan W. , Li Q. , D. Jiang Z. , Liu M. , Y. Zhou Z. . Sunlight-induced tri-state spin memory in photovoltaic/ferromagnetic heterostructure. Nano Today, 2022, 46: 101605 https://doi.org/10.1016/j.nantod.2022.101605
36
L. Li C. , J. Li Y. , F. Zhao Y. , J. Du Y. , Zhao M. , J. Peng W. , Y. Wu Y. , Liu M. , Y. Zhou Z. . Sunlight control of ferromagnetic damping in photovoltaic/ferromagnetic heterostructures. Adv. Funct. Mater., 2022, 32(16): 2111652 https://doi.org/10.1002/adfm.202111652
37
J. Du Y. , P. Wang S. , Wang L. , Y. Jin S. , F. Zhao Y. , Min T. , D. Jiang Z. , Y. Zhou Z. , Liu M. . Improving solar control of magnetism in ternary organic photovoltaic system with enhanced photo-induced electrons doping. Nano Res., 2022, 15(3): 2626 https://doi.org/10.1007/s12274-021-3841-x
38
Zhao Y. , Zhao S. , Wang L. , Wang S. , Du Y. , Zhao Y. , Jin S. , Min T. , Tian B. , Jiang Z. , Zhou Z. , Liu M. . Photovoltaic modulation of ferromagnetism within a FM metal/P–N junction Si heterostructure. Nanoscale, 2021, 13(1): 272 https://doi.org/10.1039/D0NR07911A
39
Zhao Y. , Zhao S. , Wang L. , Zhou Z. , Liu J. , Min T. , Peng B. , Hu Z. , Jin S. , Liu M. . Sunlight control of interfacial magnetism for solar driven spintronic applications. Adv. Sci. (Weinh.), 2019, 6(24): 1901994 https://doi.org/10.1002/advs.201901994
40
Zhao M. , Wang L. , Zhao Y. , Du Y. , He Z. , Chen K. , Luo Z. , Yan W. , Li Q. , Wang C. , Jiang Z. , Liu M. , Zhou Z. . Deterministic magnetic switching in perpendicular magnetic trilayers through sunlight-induced photoelectron injection. Small, 2023, 19(28): 2301955 https://doi.org/10.1002/smll.202301955
