Abstract
To achieve high photovoltaic performance of bulk hetero-junction organic solar cells (OSCs), a range of critical factors including absorption profiles, energy level alignment, charge carrier mobility and miscibility of donor and acceptor materials should be carefully considered. For electron-donating materials, the deep highest occupied molecular orbital (HOMO) energy level that is beneficial for high open-circuit voltage is much appreciated. However, a new issue in charge transfer emerges when matching such a donor with an acceptor that has a shallower HOMO energy level. More to this point, the chemical strategies used to enhance the absorption coefficient of acceptors may lead to increased molecular crystallinity, and thus result in less controllable phase-separation of photoactive layer. Therefore, to realize balanced photovoltaic parameters, the donor-acceptor combinations should simultaneously address the absorption spectra, energy levels, and film morphologies. Here, we selected two non-fullerene acceptors, namely BTPT-4F and BTPTT-4F, to match with a wide-bandgap polymer donor P2F-EHp consisting of an imide-functionalized benzotriazole moiety, as these materials presented complementary absorption and well-matched energy levels. By delicately optimizing the blend film morphology, we demonstrated an unprecedented power conversion efficiency of over 16% for the device based on P2F-EHp:BTPTT-4F, suggesting the great promise of materials matching toward high-performance OSCs.
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Bazan GC. Sci China Chem, 2017, 60: 1109–1110
Huang F. Acta Polym Sin, 2018: 1141–1143
Zhang K, Huang F. Cao Y. Acta Polym Sin, 2018, 1400–1414
Hou J, Inganäs O, Friend RH, Gao F. Nat Mater, 2018, 17: 119–128
Yuan J, Zhang Y, Zhou L, Zhang G, Yip HL, Lau TK, Lu X, Zhu C, Peng H, Johnson PA, Leclerc M, Cao Y, Ulanski J, Li Y, Zou Y. Joule, 2019, doi: 10.1016/j.joule.2019.01.004
Meng L, Zhang Y, Wan X, Li C, Zhang X, Wang Y, Ke X, Xiao Z, Ding L, Xia R, Yip HL, Cao Y, Chen Y. Science, 2018, 361: 1094–1098
Fan B, Du X, Liu F, Zhong W, Ying L, Xie R, Tang X, An K, Xin J, Li N, Ma W, Brabec CJ, Huang F, Cao Y. Nat Energy, 2018, 3: 1051–1058
Kang Q, Ye L, Xu B, An C, Stuard SJ, Zhang S, Yao H, Ade H, Hou J. Joule, 2019, 3: 227–239
Liu W, Zhang J, Zhou Z, Zhang D, Zhang Y, Xu S, Zhu X. Adv Mater, 2018, 30: 1800403
Jiang W, Yu R, Liu Z, Peng R, Mi D, Hong L, Wei Q, Hou J, Kuang Y, Ge Z. Adv Mater, 2018, 30: 1703005
Xu X, Bi Z, Ma W, Wang Z, Choy WCH, Wu W, Zhang G, Li Y, Peng Q. Adv Mater, 2017, 29: 1704271
Ma X, Gao W, Yu J, An Q, Zhang M, Hu Z, Wang J, Tang W, Yang C, Zhang F. Energy Environ Sci, 2018, 11: 2134–2141
Lin Y, Wang J, Zhang ZG, Bai H, Li Y, Zhu D, Zhan X. Adv Mater, 2015, 27: 1170–1174
Zhang S, Qin Y, Zhu J, Hou J. Adv Mater, 2018, 30: 1800868
Xiao Z, Jia X, Li D, Wang S, Geng X, Liu F, Chen J, Yang S, Russell TP, Ding L. Sci Bull, 2017, 62: 1494–1496
Dai S, Li T, Wang W, Xiao Y, Lau TK, Li Z, Liu K, Lu X, Zhan X. Adv Mater, 2018, 30: 1706571
Yao H, Cui Y, Yu R, Gao B, Zhang H, Hou J. Angew Chem Int Ed, 2017, 56: 3045–3049
Hu Z, Ying L, Huang F, Cao Y. Sci China Chem, 2017, 60: 571–582
Feng L, Yuan J, Zhang Z, Peng H, Zhang ZG, Xu S, Liu Y, Li Y, Zou Y. ACS Appl Mater Interfaces, 2017, 9: 31985–31992
Yuan J, Huang T, Cheng P, Zou Y, Zhang H, Yang JL, Chang SY, Zhang Z, Huang W, Wang R, Meng D, Gao F, Yang Y. Nat Commun, 2019, 10: 570
Fan Q, Su W, Wang Y, Guo B, Jiang Y, Guo X, Liu F, Russell TP, Zhang M, Li Y. Sci China Chem, 2018, 61: 531–537
Shi X, Liao X, Gao K, Zuo L, Chen J, Zhao J, Liu F, Chen Y, Jen AKY. Adv Funct Mater, 2018, 28: 1802324
Lan L, Chen Z, Hu Q, Ying L, Zhu R, Liu F, Russell TP, Huang F, Cao Y. Adv Sci, 2016, 3: 1600032
Fan B, Zhang K, Jiang XF, Ying L, Huang F, Cao Y. Adv Mater, 2017, 29: 1606396
Zheng N, Mahmood K, Zhong W, Liu F, Zhu P, Wang Z, Xie B, Chen Z, Zhang K, Ying L, Huang F, Cao Y. Nano Energy, 2019, 58: 724–731
Fan B, Ying L, Wang Z, He B, Jiang XF, Huang F, Cao Y. Energy Environ Sci, 2017, 10: 1243–1251
Fan B, Ying L, Zhu P, Pan F, Liu F, Chen J, Huang F, Cao Y. Adv Mater, 2017, 29: 1703906
Fan B, Zhu P, Xin J, Li N, Ying L, Zhong W, Li Z, Ma W, Huang F, Cao Y. Adv Energy Mater, 2018, 8: 1703085
Li Z, Ying L, Zhu P, Zhong W, Li N, Liu F, Huang F, Cao Y. Energy Environ Sci, 2019, 12: 157–163
Li Z, Fan B, He B, Ying L, Zhong W, Liu F, Huang F, Cao Y. Sci China Chem, 2018, 61: 427–436
Zhong Z, Bu L, Zhu P, Xiao T, Fan B, Ying L, Lu G, Yu G, Huang F, Cao Y. ACS Appl Mater Interfaces, 2019, 11: 8350–8356
Armin A, Kassal I, Shaw PE, Hambsch M, Stolterfoht M, Lyons DM, Li J, Shi Z, Burn PL, Meredith P. J Am Chem Soc, 2014, 136: 11465–11472
Liu Y, Zhang Z, Feng S, Li M, Wu L, Hou R, Xu X, Chen X, Bo Z. J Am Chem Soc, 2017, 139: 3356–3359
Guo B, Li W, Luo G, Guo X, Yao H, Zhang M, Hou J, Li Y, Wong WY. ACS Energy Lett, 2018, 3: 2566–2572
Li N, Perea JD, Kassar T, Richter M, Heumueller T, Matt GJ, Hou Y, Güldal NS, Chen H, Chen S, Langner S, Berlinghof M, Unruh T, Brabec CJ. Nat Commun, 2017, 8: 14541
Vandewal K, Tvingstedt K, Gadisa A, Inganäs O, Manca JV. Phys Rev B, 2010, 81: 125204
Ndjawa GON, Graham KR, Mollinger S, Wu DM, Hanifi D, Prasanna R, Rose BD, Dey S, Yu L, Brédas JL, McGehee MD, Salleo A, Amassian A. Adv Energy Mater, 2017, 7: 1601995
Gasparini N, Jiao X, Heumueller T, Baran D, Matt GJ, Fladischer S, Spiecker E, Ade H, Brabec CJ, Ameri T. Nat Energy, 2016, 1: 16118
Etzold F, Howard IA, Mauer R, Meister M, Kim TD, Lee KS, Baek NS, Laquai F. J Am Chem Soc, 2011, 133: 9469–9479
Koster LJA, Mihailetchi VD, Blom PWM. Appl Phys Lett, 2006, 88: 052104
Liang Y, Xu Z, Xia J, Tsai ST, Wu Y, Li G, Ray C, Yu L. Adv Mater, 2010, 22: E135–E138
Credgington D, Jamieson FC, Walker B, Nguyen TQ, Durrant JR. Adv Mater, 2012, 24: 2135–2141
Yao J, Kirchartz T, Vezie MS, Faist MA, Gong W, He Z, Wu H, Troughton J, Watson T, Bryant D, Nelson J. Phys Rev Appl, 2015, 4: 014020
Kang H, Lee W, Oh J, Kim T, Lee C, Kim BJ. Acc Chem Res, 2016, 49: 2424–2434
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This work was supported by the National Natural Science Foundation of China (91633301, 51521002, 21822505, 21520102006).
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Fan, B., Zhang, D., Li, M. et al. Achieving over 16% efficiency for single-junction organic solar cells. Sci. China Chem. 62, 746–752 (2019). https://doi.org/10.1007/s11426-019-9457-5
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DOI: https://doi.org/10.1007/s11426-019-9457-5