[1] T Y Qu, L J Zuo, J D Chen et al. Biomimetic electrodes for flexible organic solar cells with efficiencies over 16%. Adv Opt Mater, 8, 2000669(2020).
[2] Y N Sun, M J Chang, L X Meng et al. Flexible organic photovoltaics based on water-processed silver nanowire electrodes. Nat Electron, 2, 513(2019).
[3] Z Wang, Y Han, L Yan et al. High power conversion efficiency of 13.61% for 1 cm2 flexible polymer solar cells based on patternable and mass-producible gravure-printed silver nanowire electrodes. Adv Funct Mater, 2007276(2020).
[4] G D Wang, J Q Zhang, C Yang et al. Synergistic optimization enables large-area flexible organic solar cells to maintain over 98% PCE of the small-area rigid devices. Adv Mater, 32, 2005153(2020).
[5] Z Chen, B Cotterell, W Wang. The fracture of brittle thin films on compliant substrates in flexible displays. Eng Fract Mech, 69, 597(2002).
[6] W R Cao, J Li, H Z Chen et al. Transparent electrodes for organic photoelectronic devices: A review. J Photonics Energy, 4, 040990(2014).
[7] Y Galagan, B Zimmermann, E W C Coenen et al. Current collecting grids for ITO-free solar cells. Adv Energy Mater, 2, 103(2012).
[8] T R Andersen, H F Dam, M Hosel et al. Scalable, ambient atmosphere roll-to-roll manufacture of encapsulated large area, flexible organic tandem solar cell modules. Energy Environ Sci, 7, 2925(2014).
[9] Y Galagan, E W C Coenen, S Sabik et al. Evaluation of ink-jet printed current collecting grids and busbars for ITO-free organic solar cells. Sol Energy Mater Sol Cells, 104, 32(2012).
[10] L Mao, Q Chen, Y W Li et al. Flexible silver grid/PEDOT:PSS hybrid electrodes for large area inverted polymer solar cells. Nano Energy, 10, 259(2014).
[11] Y W Li, L Mao, Y L Gao et al. ITO-free photovoltaic cell utilizing a high-resolution silver grid current collecting layer. Sol Energy Mater Sol Cells, 113, 85(2013).
[12] L C Tan, Y L Wang, J W Zhang et al. Highly efficient flexible polymer solar cells with robust mechanical stability. Adv Sci, 6, 1801180(2019).
[13] Q Wu, J Guo, R Sun et al. Slot-die printed non-fullerene organic solar cells with the highest efficiency of 12.9% for low-cost pv-driven water splitting. Nano Energy, 61, 559(2019).
[14] X L Chen, W R Guo, L M Xie et al. Embedded Ag/Ni metal-mesh with low surface roughness as transparent conductive electrode for optoelectronic applications. ACS Appl Mater Interfaces, 9, 37048(2017).
[15] X L Chen, S H Nie, W R Guo et al. Printable high-aspect ratio and high-resolution Cu grid flexible transparent conductive film with figure of merit over 80000. Adv Electron Mater, 5, 1800991(2019).
[16] Y Han, X Chen, J Wei et al. Efficiency above 12% for 1 cm2 flexible organic solar cells with Ag/Cu grid transparent conducting electrode. Adv Sci, 6, 1901490(2019).
[17] H H Tang, H R Feng, H K Wang et al. Highly conducting mxene-silver nanowire transparent electrodes for flexible organic solar cells. ACS Appl Mater Interfaces, 11, 25330(2019).
[18] X B Chen, G Y Xu, G Zeng et al. Realizing ultrahigh mechanical flexibility and > 15% efficiency of flexible organic solar cells via a "welding" flexible transparent electrode. Adv Mater, 32, 198478(2020).
[19] X Y Dong, P Shi, L L Sun et al. Flexible nonfullerene organic solar cells based on embedded silver nanowires with an efficiency up to 11.6%. J Mater Chem A, 7, 1989(2019).
[20] Y X Zhang, J Fang, W Li et al. Synergetic transparent electrode architecture for efficient non-fullerene flexible organic solar cells with >12% efficiency. ACS Nano, 13, 4686(2019).
[21] S B Kang, Y J Noh, S I Na et al. Brush-painted flexible organic solar cells using highly transparent and flexible Ag nanowire network electrodes. Sol Energy Mater Sol Cells, 122, 152(2014).
[22] H F Lu, X G Ren, D Ouyang et al. Emerging novel metal electrodes for photovoltaic applications. Small, 14, 1703140(2018).
[23] J Kim, D Ouyang, H F Lu et al. High performance flexible transparent electrode via one-step multifunctional treatment for Ag nanonetwork composites semi-embedded in low-temperature-processed substrate for highly performed organic photovoltaics. Adv Energy Mater, 10, 1903919(2020).
[24] Y W Han, S J Jeon, H S Lee et al. Evaporation-free nonfullerene flexible organic solar cell modules manufactured by an all-solution process. Adv Energy Mater, 9, 1902065(2019).
[25] W C Zhao, S S Li, H F Yao et al. Molecular optimization enables over 13% efficiency in organic solar cells. J Am Chem Soc, 139, 7148(2017).
[26] J Yuan, Y Q Zhang, L Y Zhou et al. Single-junction organic solar cell with over 15% efficiency using fused-ring acceptor with electron-deficient core. Joule, 3, 1140(2019).
[27] X Meng, L Zhang, Y Xie et al. A general approach for lab-to-manufacturing translation on flexible organic solar cells. Adv Mater, 31, 1903649(2019).
[28] J Huang, X Wang, Y Kim et al. High efficiency flexible ITO-free polymer/fullerene photodiodes. Phys Chem Chem Phys, 8, 3904(2006).
[29] S K Hau, H L Yip, N S Baek et al. Air-stable inverted flexible polymer solar cells using zinc oxide nanoparticles as an electron selective layer. Appl Phys Lett, 92, 253301(2008).
[30] J C Wang, W T Weng, M Y Tsai et al. Highly efficient flexible inverted organic solar cells using atomic layer deposited ZnO as electron selective layer. J Mater Chem, 20, 862(2010).
[31] H M Stec, R A Hatton. Plasmon-active nano-aperture window electrodes for organic photovoltaics. Adv Energy Mater, 3, 193(2013).
[32] W Jose da Silva, H P Kim, A Rashid bin Mohd Yusoff et al. Transparent flexible organic solar cells with 6.87% efficiency manufactured by an all-solution process. Nanoscale, 5, 9324(2013).
[33] B Zhao, Z He, X Cheng et al. Flexible polymer solar cells with power conversion efficiency of 8.7%. J Mater Chem C, 2, 5077(2014).
[34] L Zuo, S Zhang, H Li et al. Toward highly efficient large-area ITO-free organic solar cells with a conductance-gradient transparent electrode. Adv Mater, 27, 6983(2015).
[35] W Song, X Fan, B Xu et al. All-solution-processed metal-oxide-free flexible organic solar cells with over 10% efficiency. Adv Mater, 30, 1800075(2018).
[36] G P Kushto, W Kim, Z H Kafafi. Flexible organic photovoltaics using conducting polymer electrodes. Appl Phys Lett, 86, 093502(2005).
[37] C Lungenschmied, G Dennler, H Neugebauer et al. Flexible, long-lived, large-area, organic solar cells. Sol Energy Mater Sol Cells, 91, 379(2007).
[38] F C Krebs, S A Gevorgyan, J Alstrup. A roll-to-roll process to flexible polymer solar cells: Model studies, manufacture and operational stability studies. J Mater Chem, 19, 5442(2009).
[39] Y Galagan, J E Rubingh, R Andriessen et al. ITO-free flexible organic solar cells with printed current collecting grids. Sol Energy Mater Sol Cells, 95, 1339(2011).
[40] J Zhang, Y Zhao, J Fang et al. Enhancing performance of large-area organic solar cells with thick film via ternary strategy. Small, 13, 1700388(2017).
[41] Y Lin, Y Jin, S Dong et al. Printed nonfullerene organic solar cells with the highest efficiency of 9.5%. Adv Energy Mater, 8, 1701942(2018).
[42] G Dennler, C Lungenschmied, H Neugebauer et al. Flexible, conjugated polymer-fullerene-based bulk-heterojunction solar cells: basics, encapsulation, and integration. J Mater Res, 20, 3224(2005).
[43] L Tsakalakos, N Lemaitre, R de Bettignies et al. High-efficiency large area flexible organic solar cells. 2008, 70470K(7047).
[44] M Hösel, R R Søndergaard, M Jørgensen et al. Fast inline roll-to-roll printing for indium-tin-oxide-free polymer solar cells using automatic registration. Energy Technol, 1, 102(2013).
[45] J E Carlé, M Helgesen, M V Madsen et al. Upscaling from single cells to modules – fabrication of vacuum- and ITO-free polymer solar cells on flexible substrates with long lifetime. J Mater Chem C, 2, 1290(2014).
[46] L Lucera, F Machui, P Kubis et al. Highly efficient, large area, roll coated flexible and rigid opv modules with geometric fill factors up to 98.5% processed with commercially available materials. Energy Environ Sci, 9, 89(2016).
[47] L Mao, J H Tong, S X Xiong et al. Flexible large-area organic tandem solar cells with high defect tolerance and device yield. J Mater Chem A, 5, 3186(2017).
[48] S Dong, K Zhang, B M Xie et al. High-performance large-area organic solar cells enabled by sequential bilayer processing via nonhalogenated solvents. Adv Energy Mater, 9, 1802832(2019).
[49] H Zhao, H B Naveed, B J Lin et al. Hot hydrocarbon-solvent slot-die coating enables high-efficiency organic solar cells with temperature-dependent aggregation behavior. Adv Mater, 32, 2002302(2020).
[50] G Q Ji, W C Zhao, J F Wei et al. 12.88% efficiency in doctor-blade coated organic solar cells through optimizing the surface morphology of a ZnO cathode buffer layer. J Mater Chem A, 7, 212(2019).
[51] Y Y Kim, T Y Yang, R Suhonen et al. Gravure-printed flexible perovskite solar cells: Toward roll-to-roll manufacturing. Adv Sci, 6, 1802094(2019).