Abstract
This paper reports the synthesis and characterization of Cu2ZnSnS4 (CZTS) absorber films, prepared by a two-step electrodeposition of a ZnS (zinc sulfide) binary and a CZT (copper, zinc and tin) ternary precursors on Mo/Ti/Si substrates. The as-electrodeposited ZnS/CZT and CZT/ZnS stacks were thermally treated in a tubular furnace in sulfur environment at 550 °C. The role of the ZnS buffer layer is to provide a zinc and sulfur reservoir, needed to complete the formation of kesterite phase. X-ray diffraction and Raman analyses revealed the formation of the CZTS phase. The surface morphology and chemical composition of the films were studied using a scanning electron microscope. The bandgap values inferred from diffuse reflectance data, are discussed with respect to the stoichiometry which is considerably affected by the order of the stacks. Room-temperature photoluminescence of the CZT/ZnS sample showed a board PL band of 1.51 eV. It was found that the film with a ZnS layer on top is preferred for the formation of a Zn-rich single CZTS phase.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
References
O. El Khouja, A.C. Galca, K. Nouneh, M.Y. Zaki, M. EbnTouhami, M. Taibi, E. Matei, C.C. Negrila, M. Enculescu, L. Pintilie, Structural, morphological and optical properties of Cu–Fe–Sn–S thin films prepared by electrodeposition at fixed applied potential. Thin Solid Films 721, 138547 (2021). https://doi.org/10.1016/j.tsf.2021.138547
M. Abusnina, M. Matin, H. Moutinho, M. Al-Jassim, Impact of the stack order in Cu-Zn-Sn metal precursors on the properties of Cu2ZnSnS4 thin films, in IEEE 42nd Photovoltaic Specialist Conference (PVSC) (2015), pp. 1–4. https://doi.org/10.1109/PVSC.2015.7356373
S. Azmi, L. Pezzato, M. Sturaro, E.M. Khoumri, A. Martucci, M. Dabala, A green and low-cost synthetic approach based on deep eutectic choline-urea solvent toward synthesis of CZTS thin films. Ionics 25, 2755–2761 (2019). https://doi.org/10.1007/s11581-018-2719-8
M.P. Suryawanshi, G.L. Agawane, S.M. Bhosale, S.W. Shin, P.S. Patil, J.H. Kim, A.V. Moholkar, CZTS based thin film solar cells: a status review. Mater. Technol. 28, 98–109 (2013). https://doi.org/10.1179/1753555712Y.0000000038
W. Wang, M.T. Winkler, O. Gunawan, T. Gokmen, T.K. Todorov, Y. Zhu, D.B. Mitzi, Device characteristics of CZTSSe thin-film solar cells with 12.6% efficiency. Adv. Energy Mater. 4, 1301465 (2013). https://doi.org/10.1002/aenm.201301465
C. Yan, J. Huang, K. Sun, S. Johnston, Y. Zhang, H. Sun, A. Pu, M. He, F. Liu, K. Eder, L. Yang, J.M. Cairney, N.J. Ekins-Daukes, Z. Hameiri, J.A. Stride, S. Chen, M.A. Green, X. Hao, Cu2ZnSnS4 solar cells with over 10% power conversion efficiency enabled by heterojunction heat treatment. Nat. Energy 3, 764–772 (2018). https://doi.org/10.1038/s41560-018-0206-0
H.-W. Tsai, C.-W. Chen, S.R. Thomas, C.-H. Hsu, W.-C. Tsai, Y.-Z. Chen, Y.-C. Wang, Z.M. Wang, H.-F. Hong, Y.-L. Chueh, Facile growth of Cu2ZnSnS4 thin-film by one-step pulsed hybrid electrophoretic and electroplating deposition. Sci. Rep. 6, 19102 (2016). https://doi.org/10.1038/srep19102
M.Y. Zaki, K. Nouneh, M. Ebn Touhami, R.A. Belakhmima, A.C. Galca, L. Pintilie, M. Enculescu, M. Baibarac, M. Taibi, Effect of mixing complexing agents on the properties of electrodeposited CZTS thin films. Opt. Mater. 83, 252–256 (2018). https://doi.org/10.1016/j.optmat.2018.06.030
C.J. Bosson, M.T. Birch, D.P. Halliday, K.S. Knight, A.S. Gibbs, P.D. Hatton, Cation disorder and phase transitions in the structurally complex solar cell material Cu2ZnSnS4. J. Mater. Chem. A 5, 16672–16680 (2017). https://doi.org/10.1039/C7TA03603E
M. Kumar, A. Dubey, N. Adhikari, S. Venkatesan, Q. Qiao, Strategic review of secondary phases, defects and defect-complexes in kesterite CZTS–Se solar cells. Energy Environ. Sci. 8, 3134–3159 (2015). https://doi.org/10.1039/C5EE02153G
R. Caballero, E. Garcia-Llamas, J.M. Merino, M. Leon, I. Babichuk, V. Dzhagan, V. Strelchuk, M. Valakh, Non-stoichiometry effect and disorder in Cu2ZnSnS4 thin films obtained by flash evaporation: Raman scattering investigation. Acta Mater. 65, 412–417 (2014). https://doi.org/10.1016/j.actamat.2013.11.010
S. Delbos, Kesterite thin films for photovoltaics: a review. EPJ Photovolt. 3, 35004 (2012). https://doi.org/10.1051/epjpv/2012008
M. Jiang, Xingzhong Y, Cu2ZnSnS4 thin film solar cells: present status and future prospects, in Solar Cells - Research and Application Perspectives, Ed. InTech. (2013). https://doi.org/10.5772/50702.
S. Azmi, E.M. Khoumri, M.E. Marrakchi, L. Pezzato, M. Nohair, M. Dabala, Structural and optical annealing route-dependent properties of CZTS thin films grown by one-step electrodeposition with free annealing sulfurization for photovoltaic application. J. Electron. Mater. 48, 8254–8260 (2019). https://doi.org/10.1007/s11664-019-07677-7
C. Zhang, J. Tao, J. Chu, An 8.7% efficiency co-electrodeposited Cu2ZnSnS4 photovoltaic device fabricated via a pressurized post-sulfurization process. J. Mater. Chem. C 6, 13275–13282 (2018). https://doi.org/10.1039/C8TC05058A
L. Yao, J. Ao, M.-J. Jeng, J. Bi, S. Gao, Q. He, Z. Zhou, G. Sun, Y. Sun, L.-B. Change, J.-W. Chen, CZTSe solar cells prepared by electrodeposition of Cu/Sn/Zn stack layer followed by selenization at low Se pressure. Nanoscale Res. Lett. 9, 678 (2014). https://doi.org/10.1186/1556-276X-9-678
G. Panzeri, R. Dell’Oro, V. Trifiletti, J. Parravicini, M. Acciarri, S. Binetti, L. Magagnin, Copper electrodeposition onto zinc for the synthesis of kesterite Cu2ZnSnS4 from a Mo/Zn/Cu/Sn precursor stack. Electrochem. Commun. 109, 106580 (2019). https://doi.org/10.1016/j.elecom.2019.106580
P.K. Sarswat, M. Snure, M.L. Free, A. Tiwari, CZTS thin films on transparent conducting electrodes by electrochemical technique. Thin Solid Films 520, 1694–1697 (2012). https://doi.org/10.1016/j.tsf.2011.07.052
T. Taskesen, V. Steininger, W. Chen, J. Ohland, U. Mikolajczak, D. Pareek, J. Parisi, L. Gutay, Resilient and reproducible processing for CZTSe solar cells in the range of 10%. Prog. Photovolt. Res. Appl. 26, 1003–1006 (2018). https://doi.org/10.1002/pip.3063
T. Ratz, G. Brammertz, R. Caballero, M. Leon, S. Canulescu, J. Schou, L. Gutay, D. Pareek, T. Taskesen, D.-H. Kim, Physical routes for the synthesis of kesterite. J. Phys. Energy 1, 042003 (2019). https://doi.org/10.1088/2515-7655/ab281c
M.I. Khalil, O. Atici, A. Lucotti, S. Binetti, A. Le Donne, L. Magagnin, CZTS absorber layer for thin film solar cells from electrodeposited metallic stacked precursors (Zn/Cu-Sn). Appl. Surf. Sci. 379, 91–97 (2016). https://doi.org/10.1016/j.apsusc.2016.04.062
T. Yuan, Y. Li, M. Jia, Y. Lai, J. Li, F. Liu, Y. Liu, Fabrication of Cu2ZnSnS4 thin film solar cells by sulfurization of electrodeposited stacked binary Cu–Zn and Cu–Sn alloy layers. Mater. Lett. 155, 44–47 (2015). https://doi.org/10.1016/j.matlet.2015.04.101
J. Tao, L. Chen, H. Cao, C. Zhang, J. Liu, Y. Zhang, L. Huang, J. Jiang, P. Yang, J. Chu, Co-electrodeposited Cu2ZnSnS4 thin-film solar cells with over 7% efficiency fabricated via fine-tuning of the Zn content in absorber layers. J. Mater. Chem. A 4, 3798–3805 (2016). https://doi.org/10.1039/C5TA09636G
F.Z. Boutebakh, A. Beloucif, M.S. Aida, A. Chettah, N. Attaf, Zinc molarity effect on Cu2ZnSnS4 thin film properties prepared by spray pyrolysis. J. Mater. Sci. Mater. Electron. 29, 4089–4095 (2018). https://doi.org/10.1007/s10854-017-8353-9
W. Li, J. Chen, C. Yan, X. Hao, The effect of ZnS segregation on Zn-rich CZTS thin film solar cells. J. Alloys Compd. 632, 178–184 (2015). https://doi.org/10.1016/j.jallcom.2015.01.205
A. Azmand, H. Kafashan, Al-doped ZnS thin films: Physical and electrochemical characterizations. J. Alloys Compd. 779, 301–313 (2019). https://doi.org/10.1016/j.jallcom.2018.11.268
N. Fathy, R. Kobayashi, M. Ichimura, Preparation of ZnS thin films by the pulsed electrochemical deposition. Mater. Sci. Eng. B 107, 271–276 (2004). https://doi.org/10.1016/j.mseb.2003.11.021
A. Jafari-Rad, H. Kafashan, Preparation and characterization of electrochemically deposited nanostructured Ti-doped ZnS thin films. Ceram. Int. 45, 21413–21422 (2019). https://doi.org/10.1016/j.ceramint.2019.07.130
K. Kim, I. Kim, Y. Oh, D. Lee, K. Woo, S. Jeong, J. Moon, Influence of precursor type on non-toxic hybrid inks for high-efficiency Cu2ZnSnS4 thin-film solar cells. Green Chem. 16, 4323–4332 (2014). https://doi.org/10.1039/C4GC00896K
F. Oliva, L. Arques, L. Acebo, M. Guc, Y. Sanchez, X. Alcobe, A. Perez-Rodriguez, E. Saucedo, V. Izquierdo-Roca, Characterization of Cu2SnS3 polymorphism and its impact on optoelectronic properties. J. Mater. Chem. A 5, 23863–23871 (2017). https://doi.org/10.1039/C7TA08705E
W. Daranfed, M.S. Aida, N. Attaf, J. Bougdira, H. Rinnert, Cu2ZnSnS4 thin films deposition by ultrasonic spray pyrolysis. J. Alloys Compd. 542, 22–27 (2012). https://doi.org/10.1016/j.jallcom.2012.07.063
M. Franckevicius, V. Pakstas, G. Grinciene, E. Kamarauskas, R. Giraitis, J. Nekrasovas, A. Selskis, R. Juskenas, G. Niaura, Efficiency improvement of superstrate CZTSSe solar cells processed by spray pyrolysis approach. Sol. Energy 185, 283–289 (2019). https://doi.org/10.1016/j.solener.2019.04.072
F.Z. Boutebakh, M.L. Zeggar, N. Attaf, M.S. Aida, Electrical properties and back contact study of CZTS/ZnS heterojunction. Optik 144, 180–190 (2017). https://doi.org/10.1016/j.ijleo.2017.06.080
K. Rudisch, A. Davydova, C. Platzer-Bjorkman, J.J. Scragg, The effect of stoichiometry on Cu-Zn ordering kinetics in Cu2ZnSnS4 thin films. J. Appl. Phys. 123, 161558 (2018). https://doi.org/10.1063/1.5010081
S. Azmi, A. Moujib, O.A. Layachi, E. Matei, A.C. Galca, M.Y. Zaki, M. Secu, M.I. Rusu, C.E.A. Grigorescu, E.M. Khoumri, Towards phase pure kesterite Cu2ZnSnS4 absorber layers growth via single step free sulfurization electrodeposition under a fix applied potential on Mo substrate. J. Alloys Compd. 842, 155821 (2020). https://doi.org/10.1016/j.jallcom.2020.155821
M. Dimitrievska, F. Boreo, A.P. Litvinchuk, S. Delsante, G. Borzone, A. Perez-Rodriguez, V. Izquierdo-Roca, Structural polymorphism in ‘Kesterite’ Cu2ZnSnS4: Raman spectroscopy and first-principles calculations analysis. Inorg. Chem. 56, 3467–3474 (2017). https://doi.org/10.1021/acs.inorgchem.6b03008
Y. Havryliuk, M.Y. Valakh, V. Dzhagan, O. Greshchuk, V. Yukhymchuk, A. Raevskaya, O. Stroyuk, O. Selyshchev, N. Gaponik, D.R.T. Zahn, Raman characterization of Cu2ZnSnS4 nanocrystals: phonon confinement effect and formation of CuxS phases. RSC Adv. 8, 30736–30746 (2018). https://doi.org/10.1039/C8RA05390A
P.A. Fernandes, P.M.P. Salomé, A.F. da Cunha, Study of polycrystalline Cu2ZnSnS4 films by Raman scattering. J. Alloys Compd. 509, 7600–7606 (2011). https://doi.org/10.1016/j.jallcom.2011.04.097
D.M. Berg, M. Arasimowicz, R. Djemour, L. Gutay, S. Siebentritt, S. Schorr, X. Fontane, V. Izquierdo-Roca, A. Perez-Rodriguez, P.J. Dale, Discrimination and detection limits of secondary phases in Cu2ZnSnS4 using X-ray diffraction and Raman spectroscopy. Thin Solid Films 569, 113–123 (2014). https://doi.org/10.1016/j.tsf.2014.08.028
T.J. Huang, X. Yin, C. Tang, G. Qi, H. Gong, A low-cost, ligand exchange-free strategy to synthesize large-grained Cu2ZnSnS4 thin-films without a fine-grain underlayer from nanocrystals. J. Mater. Chem. A 3, 17788–17796 (2015). https://doi.org/10.1039/C5TA03640B
T. Ericson, J.J. Scragg, T. Kubart, T. Törndahl, C. Platzer-Björkman, Annealing behavior of reactively sputtered precursor films for Cu2ZnSnS4 solar cells. Thin Solid Films 535, 22–26 (2013). https://doi.org/10.1016/j.tsf.2012.10.081
I.S. Babichuk, M.O. Semenenko, R. Caballero, O.I. Datsenko, S. Golovynski, R. Qiu, C. Huang, R. Hui, I.V. Babichuk, R.R. Ziniuk, M. Stetsenko, O.A. Kapush, J. Yang, B. Li, J. Qu, M. Leon, Raman mapping of MoS2 at Cu2ZnSnS4/Mo interface in thin film. Sol. Energy 205, 154–160 (2020). https://doi.org/10.1016/j.solener.2020.05.043
A. Aldalbahi, E.M. Mkawi, K. Ibrahim, M.A. Farrukh, Effect of sulfurization time on the properties of copper zinc tin sulfide thin films grown by electrochemical deposition. Sci. Rep. 6, 32431 (2016). https://doi.org/10.1038/srep32431
Y. Al-Hadeethi, E.M. Mkawi, O. Al-Hartomy, E. Bekyarova, Solvothermal synthesis of kesterite Cu2ZnSnS4 nanocrystals: Influence of glycine complexing agent concentration on properties. Ceram. Int. 47, 11568–11573 (2021). https://doi.org/10.1016/j.ceramint.2020.12.287
M. Valdes, Y. Sanchez, G. Perelstein, F. Oliva, V. Izquierdo-Roca, A. Perez-Rodriguez, E. Saucedo, Influence of co-electrodeposition parameters in the synthesis of kesterite thin films for photovoltaic. J. Alloys Compd. 839, 155679 (2020). https://doi.org/10.1016/j.jallcom.2020.155679
M.I. Khalil, R. Bernasconi, L. Pedrazzetti, A. Lucotti, A. Le Donne, S. Binetti, L. Magagnin, Co-electrodeposition of metallic precursors for the fabrication of CZTSe thin films solar cells on flexible Mo foil. J. Electrochem. Soc. 164, D302–D306 (2017). https://doi.org/10.1149/2.1001706jes
M.C. Johnson, C. Wrasman, X. Zhang, M. Manno, C. Leighton, E.S. Aydil, Self-regulation of Cu/Sn ratio in the synthesis of Cu2ZnSnS4 films. Chem. Mater. 27, 2507–2514 (2015). https://doi.org/10.1021/acs.chemmater.5b00108
G. Teeter, H. Du, J.E. Leisch, M. Young, F. Yan, S.W. Johnston, P. Dippo, D. Kuciauskas, M.J. Romero, P. Newhouse, S.E. Asher, D.S. Ginley, Combinatorial study of thin-film Cu2ZnSnS4 synthesis via metal precursor sulfurization, in 35th IEEE Photovoltaic Specialists Conference (2010), pp. 000650–000655. https://doi.org/10.1109/PVSC.2010.5616874.
S. Giraldo, Z. Jehl, M. Placidi, V. Izquierdo-Roca, A. Pérez-Rodríguez, E. Saucedo, Progress and perspectives of thin film kesterite photovoltaic technology: a critical review. Adv. Mater. 31, 1806692 (2019). https://doi.org/10.1002/adma.201806692
H.-C. Ni, C.-H. Lin, K.-Y. Lo, C.-H. Tsai, T.-P. Chen, J.-L. Tsai, J.-R. Gong, Properties of Cu2ZnSnS4 films by sulfurization of CuS-SnS-ZnS precursors using ditert-butylsulfide at atmospheric pressure. ECS J. Solid State Sci. Technol. 4, Q72–Q74 (2015). https://doi.org/10.1149/2.0091508jss
B. Zhou, D. Xia, Y. Wang, Phase-selective synthesis and formation mechanism of CZTS nanocrystals. RSC Adv. 5, 70117–70126 (2015). https://doi.org/10.1039/C5RA11890E
M.Y. Zaki, F. Sava, A.T. Buruiana, I.D. Simandan, N. Becherescu, A.C. Galca, C. Mihai, A. Velea, Synthesis and characterization of Cu2ZnSnS4 thin films obtained by combined magnetron sputtering and pulsed laser deposition. Nanomaterials 11, 2403 (2021). https://doi.org/10.3390/nano11092403
D.M. Berg, A. Crossay, J. Guillot, V. Izquierdo-Roca, A. Perez-Rodriguez, S. Ahmed, H. Deligianni, S. Siebentritt, P.J. Dale, Simplified formation process for Cu2ZnSnS4-based solar cells. Thin Solid Films 573, 148–158 (2014). https://doi.org/10.1016/j.tsf.2014.11.012
N. Thota, M. Gurubhaskar, M.A. Sunil, P. Prathap, Y.P.V. Subbaiah, A. Tiwari, Effect of metal layer stacking order on the growth of Cu2ZnSnS4 thin films. Appl. Surf. Sci. 396, 644–651 (2017). https://doi.org/10.1016/j.apsusc.2016.11.001
A. Cazzaniga, A. Crovetto, R. B. Ettlinger, S. Canulescu, O. Hansen, N. Pryds, J. Schou, ZnS top layer for enhancement of the crystallinity of CZTS absorber during the annealing, in IEEE 42nd Photovoltaic Specialist Conference (PVSC) (2015), pp. 1–4. https://doi.org/10.1109/PVSC.2015.7355905
H. Ahmoum, P. Chelvanathan, M.S. Su’ait, M. Boughrara, G. Li, A.H.A. Al-Waeli, K. Sopian, M. Kerouad, N. Amin, Impact of preheating environment on microstructural and optoelectronic properties of Cu2ZnSnS4 (CZTS) thin films deposited by spin-coating. Superlattices Microstruct. 140, 106452 (2020). https://doi.org/10.1016/j.spmi.2020.106452
M. Souli, C. Nefzi, Z. Seboui, A. Mejri, R. Vidu, N. Kamoun-Turki, Improved structural properties, morphological and optical behaviors of sprayed Cu2ZnSnS4 thin films induced by high gamma radiations for solar cells. Mater. Sci. Semicond. 83, 50–57 (2018). https://doi.org/10.1016/j.mssp.2018.04.009
M. Sampath, K. Sankarasubramanian, J. Archana, Y. Hayakawa, K. Ramamurthi, K. Sethuraman, Structural, optical and photocatalytic properties of spray deposited Cu2ZnSnS4 thin films with various S/(Cu+Zn+Sn) ratio. Mater. Sci. Semicond. Process. 87, 54–64 (2018). https://doi.org/10.1016/j.mssp.2018.07.001
S. Kermadi, S. Sali, F. Ait Ameur, L. Zougar, M. Bouqmour, A. Toumiat, N.N. Melnik, D.W. Hewak, A. Duta, Effect of copper content and sulfurization process on optical, structural and electrical properties of ultrasonic spray pyrolysed Cu2ZnSnS4 thin films. Mater. Chem. Phys. 169, 96–104 (2016). https://doi.org/10.1016/j.matchemphys.2015.11.035
C. Rein, S. Engberg, J.W. Andreasen, Stable, carbon-free inks of Cu2ZnSnS4 nanoparticles synthesized at room temperature designed for roll-to-roll fabrication of solar cell absorber layers. J. Alloys Compd. 787, 63–71 (2019). https://doi.org/10.1016/j.jallcom.2019.02.014
C. Malerba, F. Biccari, C.L.A. Ricardo, M. Valentini, R. Chierchia, M. Muller, A. Santoni, E. Esposito, P. Mangiapane, P. Scardi, A. Mittiga, CZTS stoichiometry effects on the band gap energy. J. Alloys Compd. 582, 528–534 (2014). https://doi.org/10.1016/j.jallcom.2013.07.199
M.A. Olgar, J. Klaer, R. Mainz, L. Ozyuzer, T. Unold, Cu2ZnSnS4-based thin films and solar cells by rapid thermal annealing processing. Thin Solid Films 628, 1–6 (2017). https://doi.org/10.1016/j.tsf.2017.03.008
T.P. Dhakal, C. Peng, R. Reid Tobias, R. Dasharathy, C.R. Westgate, Characterization of a CZTS thin film solar cell grown by sputtering method. Sol. Energy 100, 23–30 (2014). https://doi.org/10.1016/j.solener.2013.11.035
T.K. Todorov, J. Tang, S. Bag, O. Gunawan, T. Gokmen, Y. Zhu, D.B. Mitzi, Beyond 11% efficiency: characteristics of state-of-the-art Cu2ZnSn(S, Se)4 solar cells. Adv. Energy Mater. 3, 34–38 (2012). https://doi.org/10.1002/aenm.201200348
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M.Y:Z. acknowledges Romanian Ministry of Foreign Affairs and Agence universitaire de la Francophonie for the Eugen Ionescu research and mobility grant at NIMP. All authors acknowledge for financial support the Romanian Ministry of Research and Innovation through the Core Program 2019-2022 (Contracts No. 21N and No. 18N) and PNIII P4-ID-PCE-2020-0827 (Contract No. PCE74/09.02.2021) projects; and the Moroccan Ministry of Higher Education and Research and Centre National pour la Recherche Scientifique et Technique in the framework of PPR/37/2015 project.
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Conceptualization: MYZ, MET, ACG; Methodology: MYZ, KN, LP; Formal analysis: MYZ, OEK, ACG; Investigation: MYZ, OEK, SA, EM, MIR, CEAG, MB, SB, PB, MB, MS, ACG; Writing original draft: MYZ; Writing—review and editing: MYZ, EM, SA, PB, ACG; Funding acquisition: KN, MET, Aurelian Galca; Resources: MET, EM, LP; Supervision: KN, MET, ACG.
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Zaki, M.Y., El Khouja, O., Nouneh, K. et al. ZnS stacking order influence on the formation of Zn-poor and Zn-rich Cu2ZnSnS4 phase. J Mater Sci: Mater Electron 33, 11989–12001 (2022). https://doi.org/10.1007/s10854-022-08160-6
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DOI: https://doi.org/10.1007/s10854-022-08160-6