Review

Research Progress of Tandem Organic Solar Cells

  • Wang Wenxuan ,
  • Wang Jianqiu ,
  • Zheng Zhong ,
  • Hou Jianhui
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  • a Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2020-02-13

  Online published: 2020-04-26

Supported by

Project supported by the National Natural Science Foundation of China (NSFC) (Nos. 51703041, 91333204, 91633301, 51673201).

Abstract

Organic solar cells have been developing quite rapidly in the past two decades. Tang fabricated the first organic solar cell with planar heterojunction in 1986, while the power conversion efficiency (PCE) was only 1%. The PCE of single-junction organic solar cell has increased to over 17% in 2019. However, the single-junction solar cells are limited in performance by the severe energy loss. Tandem organic solar cells that use an interconnecting layer connecting two sub-cells provide the possibility of optimizing the devices performance. The two different active layers of sub-cells have non-overlapping light absorption scales, which make the light utilized more adequately. Therefore, the tandem architecture of devices can extend the light absorption within the solar spectrum and effectively reduce energy loss resulting from thermalization loss and transmission loss. According to Shockley and Queisser's calculation, the limitation of the PCE of a tandem solar cell is 42%, which is higher than 33.8% of a single-junction solar cell. In organic photovoltaics field, the developments of the tandem solar cells benefit from the optimization of active layers, interconnecting layers and construction methods. These achievements have resulted in higher PCEs and the devices approaching practical application. At present, the highest PCE of tandem organic solar cell is 17.3% obtained by Chen's group in 2018, but it is still far from the PCE limitation. According to Kirchhoff's law, the open-circuit voltage (VOC) in series tandem cells is theoretically equal to the sum of the VOCs of sub-cells, and the short-circuit current (JSC) in parallel cells is equal to the sum of the JSCs of sub-cells. Hence, the series tandem solar cells still face with the challenge of the unmatched JSCs and the complexed processing methods. Here, this review mainly focuses on the materials used in tandem solar cells, the structure of the interconnecting layers, the processing methods, the measurement methods and the applications. The critical achievements on tandem organic solar cells in recent years and the progress of larger scale, flexible tandem devices are summarized in this review. It also presents the outlooks of the high performance tandem solar cells based on the material and structure requirements.

Cite this article

Wang Wenxuan , Wang Jianqiu , Zheng Zhong , Hou Jianhui . Research Progress of Tandem Organic Solar Cells[J]. Acta Chimica Sinica, 2020 , 78(5) : 382 -396 . DOI: 10.6023/A20020032

References

[1] Upama, M. B.; Mahmud, M. A.; Conibeer, G.; Uddin, A. Solar RRL 2020, 4, 1900342.
[2] Inganäs, O. Adv. Mater. 2018, 30, 1800388.
[3] Zhang, X.; Tang, Y.; Yang, K.; Chen, P.; Guo, X. ChemElectroChem 2019, 6, 5547.
[4] Tang, C. W. Appl. Phys. Lett. 1986, 48, 183.
[5] Di Carlo Rasi, D.; Janssen, R. A. J. Adv. Mater. 2019, 31, e1806499.
[6] Ameri, T.; Dennler, G.; Lungenschmied, C.; Brabec, C. J. Energy Environ. Sci. 2009, 2, 347.
[7] Vos, A. D. J. Phys. D:Appl. Phys. 1980, 13, 839.
[8] Shockley, W.; Queisser, H. J. J. Appl. Phys. 1961, 32, 510.
[9] Sista, S.; Hong, Z.; Chen, L.-M.; Yang, Y. Energy Environ. Sci. 2011, 4, 1606.
[10] Yip, H.-L.; Jen, A. K. Y. Energy Environ. Sci. 2012, 5, 5994.
[11] Yuan, Y.; Huang, J.; Li, G. Green 2011, 1, 65.
[12] Hadipour, A.; Boer, B. d.; Wildeman, J.; Kooistra, F. B.; Hummelen, J. C.; Turbiez, M. G. R.; Wienk, M. M.; Janssen, R. A. J.; Blom, P. W. M. Adv. Funct. Mater. 2006, 16, 1897.
[13] Kim, J. Y.; Lee, K.; Coates, N. E.; Moses, D.; Nguyen, T. Q.; Dante, M.; Heeger, A. J. Science 2007, 317, 222.
[14] Meng, L.; Ding, L.; Xia, R.; Cao, Y.; Chen, Y.; Zhang, Y.; Wan, X.; Li, C.; Zhang, X.; Wang, Y.; Ke, X.; Xiao, Z.; Yip, H.-L. Science 2018, 361, 1094.
[15] Lu, S.; Lin, H.; Zhang, S.; Hou, J.; Choy, W. C. H. Adv. Energy Mater. 2017, 7, 1701164.
[16] Huang, F.; Wu, H.; Wang, D.; Yang, W.; Cao, Y. Chem. Mater. 2004, 16, 708.
[17] Chen, F. X.; Xu, J. Q.; Liu, Z. X.; Chen, M.; Xia, R.; Yang, Y.; Lau, T. K.; Zhang, Y.; Lu, X.; Yip, H. L.; Jen, A. K.; Chen, H.; Li, C. Z. Adv. Mater. 2018, 30, e1803769.
[18] Mai, C. K.; Zhou, H.; Zhang, Y.; Henson, Z. B.; Nguyen, T. Q.; Heeger, A. J.; Bazan, G. C. Angew. Chem., Int. Ed. 2013, 52, 12874.
[19] Zhou, H.; Zhang, Y.; Mai, C. K.; Collins, S. D.; Bazan, G. C.; Nguyen, T. Q.; Heeger, A. J. Adv. Mater. 2015, 27, 1767.
[20] Cui, Y.; Yao, H.; Gao, B.; Qin, Y.; Zhang, S.; Yang, B.; He, C.; Xu, B.; Hou, J. J. Am. Chem. Soc. 2017, 139, 7302.
[21] Mohd Yusoff, A. R. b.; Lee, S. J.; Kim, H. P.; Shneider, F. K.; da Silva, W. J.; Jang, J. Adv. Funct. Mater. 2014, 24, 2240.
[22] Kim, J.-H.; Shin, S. A.; Park, J. B.; Song, C. E.; Shin, W. S.; Yang, H.; Li, Y.; Hwang, D.-H. Macromolecules 2014, 47, 1613.
[23] Qin, Y.; Chen, Y.; Cui, Y.; Zhang, S.; Yao, H.; Huang, J.; Li, W.; Zheng, Z.; Hou, J. Adv. Mater. 2017, 29, 1606340.
[24] Siddiki, M. K.; Li, J.; Galipeau, D.; Qiao, Q. Energy Environ. Sci. 2010, 3, 867.
[25] Song, S.; Kranthiraja, K.; Heo, J.; Kim, T.; Walker, B.; Jin, S.-H.; Kim, J. Y. Adv. Energy Mater. 2017, 7, 1700782.
[26] Zhang, Y.; Kan, B.; Sun, Y.; Wang, Y.; Xia, R.; Ke, X.; Yi, Y. Q.; Li, C.; Yip, H. L.; Wan, X.; Cao, Y.; Chen, Y. Adv. Mater. 2018, 30, e1707508.
[27] Mohd Yusoff, A. R. b.; Kim, D.; Schneider, F. K.; da Silva, W. J.; Jang, J. Energy Environ. Sci. 2015, 8, 1523.
[28] You, J.; Dou, L.; Yoshimura, K.; Kato, T.; Ohya, K.; Moriarty, T.; Emery, K.; Chen, C. C.; Gao, J.; Li, G.; Yang, Y. Nat. Commun. 2013, 4, 1446.
[29] Hofle, S.; Schienle, A.; Bernhard, C.; Bruns, M.; Lemmer, U.; Colsmann, A. Adv. Mater. 2014, 26, 5155.
[30] Qiu, M.; Zhu, D.; Bao, X.; Wang, J.; Wang, X.; Yang, R. J. Mater. Chem. A 2016, 4, 894.
[31] Li, X.; Zhang, W.; Wu, Y.; Min, C.; Fang, J. ACS Appl. Mater. Interfaces 2013, 5, 8823.
[32] Guo, X.; Xie, H. J.; Zheng, J. W.; Xu, H.; Wang, Q. K.; Li, Y. Q.; Lee, S. T.; Tang, J. X. Nanoscale 2015, 7, 867.
[33] Tan, Z. a.; Li, L.; Wang, F.; Xu, Q.; Li, S.; Sun, G.; Tu, X.; Hou, X.; Hou, J.; Li, Y. Adv. Energy Mater. 2014, 4, 1300884.
[34] Park, S. H.; Shin, I.; Kim, K. H.; Street, R.; Roy, A.; Heeger, A. J. Adv. Mater. 2015, 27, 298.
[35] Zhao, W.; Ye, L.; Zhang, S.; Fan, B.; Sun, M.; Hou, J. Sci. Rep. 2014, 4, 6570.
[36] da Silva, W. J.; Schneider, F. K.; Yusoff, A. R.; Jang, J. Sci. Rep. 2015, 5, 18090.
[37] Liu, J.; Xue, Y.; Gao, Y.; Yu, D.; Durstock, M.; Dai, L. Adv. Mater. 2012, 24, 2228.
[38] Chen, Y.; Lin, W. C.; Liu, J.; Dai, L. Nano Lett. 2014, 14, 1467.
[39] Liu, J.; Kim, G. H.; Xue, Y.; Kim, J. Y.; Baek, J. B.; Durstock, M.; Dai, L. Adv. Mater. 2014, 26, 786.
[40] Vasilopoulou, M.; Polydorou, E.; Douvas, A. M.; Palilis, L. C.; Kennou, S.; Argitis, P. Energy Environ. Sci. 2015, 8, 2448.
[41] Li, M.; Gao, K.; Wan, X.; Zhang, Q.; Kan, B.; Xia, R.; Liu, F.; Yang, X.; Feng, H.; Ni, W.; Wang, Y.; Peng, J.; Zhang, H.; Liang, Z.; Yip, H.-L.; Peng, X.; Cao, Y.; Chen, Y. Nature Photonics 2016, 11, 85.
[42] Xu, B.; Zheng, Z.; Zhao, K.; Hou, J. Adv. Mater. 2016, 28, 434.
[43] Cui, Y.; Xu, B.; Yang, B.; Yao, H.; Li, S.; Hou, J. Macromolecules 2016, 49, 8126.
[44] Lu, S.; Guan, X.; Li, X.; Sha, W. E. I.; Xie, F.; Liu, H.; Wang, J.; Huang, F.; Choy, W. C. H. Adv. Energy Mater. 2015, 5, 1500631.
[45] Beliatis, M. J.; Gandhi, K. K.; Rozanski, L. J.; Rhodes, R.; McCafferty, L.; Alenezi, M. R.; Alshammari, A. S.; Mills, C. A.; Jayawardena, K. D.; Henley, S. J.; Silva, S. R. Adv. Mater. 2014, 26, 2078.
[46] Kim, H. P.; Yusoff, A. R. b. M.; Kim, H. M.; Lee, H. J.; Seo, G. J.; Jang, J. Nanoscale Res. Lett. 2014, 9, 150.
[47] Tan, Z.; Li, S.; Wang, F.; Qian, D.; Lin, J.; Hou, J.; Li, Y. Sci. Rep. 2014, 4, 4691.
[48] Che, X.; Li, Y.; Qu, Y.; Forrest, S. R. Nat. Energy 2018, 3, 422.
[49] Zuo, L.; Chang, C.-Y.; Chueh, C.-C.; Zhang, S.; Li, H.; Jen, A. K. Y.; Chen, H. Energy Environ. Sci. 2015, 8, 1712.
[50] Wang, Z.; Li, Z.; Xu, X.; Li, Y.; Li, K.; Peng, Q. Adv. Funct. Mater. 2016, 26, 4643.
[51] Zhang, Z.-G.; Qi, B.; Jin, Z.; Chi, D.; Qi, Z.; Li, Y.; Wang, J. Energy Environ. Sci. 2014, 7, 1966.
[52] Maennig, B.; Drechsel, J.; Gebeyehu, D.; Simon, P.; Kozlowski, F.; Werner, A.; Li, F.; Grundmann, S.; Sonntag, S.; Koch, M.; Leo, K.; Pfeiffer, M.; Hoppe, H.; Meissner, D.; Sariciftci, N. S.; Riedel, I.; Dyakonov, V.; Parisi, J. Appl. Phys. A 2004, 79, 1.
[53] Martínez-Otero, A.; Liu, Q.; Mantilla-Perez, P.; Bajo, M. M.; Martorell, J. J. Mater. Chem. A 2015, 3, 10681.
[54] Adams, J.; Spyropoulos, G. D.; Salvador, M.; Li, N.; Strohm, S.; Lucera, L.; Langner, S.; Machui, F.; Zhang, H.; Ameri, T.; Voigt, M. M.; Krebs, F. C.; Brabec, C. J. Energy Environ. Sci. 2015, 8, 169.
[55] Chang, S.-Y.; Lin, Y.-C.; Sun, P.; Hsieh, Y.-T.; Meng, L.; Bae, S.-H.; Su, Y.-W.; Huang, W.; Zhu, C.; Li, G.; Wei, K.-H.; Yang, Y. Solar RRL 2017, 1, 1700139.
[56] Kang, R.; Park, S.; Jung, Y. K.; Lim, D. C.; Cha, M. J.; Seo, J. H.; Cho, S. Adv. Energy Mater. 2018, 8, 1702165.
[57] Gilot, J.; Wienk, M. M.; Janssen, R. A. J. Appl. Phys. Lett. 2007, 90, 143512.
[58] Gao, Y.; Le Corre, V. M.; Gaitis, A.; Neophytou, M.; Hamid, M. A.; Takanabe, K.; Beaujuge, P. M. Adv. Mater. 2016, 28, 3366.
[59] Sista, S.; Park, M. H.; Hong, Z.; Wu, Y.; Hou, J.; Kwan, W. L.; Li, G.; Yang, Y. Adv. Mater. 2010, 22, 380.
[60] Sakai, J.; Kawano, K.; Yamanari, T.; Taima, T.; Yoshida, Y.; Fujii, A.; Ozaki, M. Sol. Energy Meter. Sol. Cells 2010, 94, 376.
[61] Tan, H.; Furlan, A.; Li, W.; Arapov, K.; Santbergen, R.; Wienk, M. M.; Zeman, M.; Smets, A. H.; Janssen, R. A. Adv. Mater. 2016, 28, 2170.
[62] Liu, Y.; Chen, C. C.; Hong, Z.; Gao, J.; Yang, Y. M.; Zhou, H.; Dou, L.; Li, G.; Yang, Y. Sci. Rep. 2013, 3, 3356.
[63] Zuo, L.; Chang, C.-Y.; Chueh, C.-C.; Xu, Y.; Chen, H.; Jen, A. K.-Y. J. Mater. Chem. A 2016, 4, 961.
[64] Shim, H.-S.; Lin, F.; Kim, J.; Sim, B.; Kim, T.-M.; Moon, C.-K.; Wang, C.-K.; Seo, Y.; Wong, K.-T.; Kim, J.-J. Adv. Energy Mater. 2015, 5, 1500228.
[65] Liu, G.; Jia, J.; Zhang, K.; Jia, X. e.; Yin, Q.; Zhong, W.; Li, L.; Huang, F.; Cao, Y. Adv. Energy Mater. 2019, 9, 1803657.
[66] Zhang, K.; Xia, R.; Fan, B.; Liu, X.; Wang, Z.; Dong, S.; Yip, H. L.; Ying, L.; Huang, F.; Cao, Y. Adv. Mater. 2018, e1803166.
[67] Hadipour, A.; Boer, B. d.; Blom, P. W. M. J. Appl. Phys. 2007, 102, 074506.
[68] Kim, T.; Firdaus, Y.; Kirmani, A. R.; Liang, R.-Z.; Hu, H.; Liu, M.; Labban, A. E.; Hoogland, S.; Beaujuge, P. M.; Sargent, E. H.; Amassian, A. ACS Energy Lett. 2018, 3, 1307.
[69] Zuo, L.; Shi, X.; Jo, S. B.; Liu, Y.; Lin, F.; Jen, A. K. Adv. Mater. 2018, 30, e1706816.
[70] Zheng, Z.; Zhang, S.; Zhang, M.; Zhao, K.; Ye, L.; Chen, Y.; Yang, B.; Hou, J. Adv. Mater. 2015, 27, 1189.
[71] Chang, C.-Y.; Zuo, L.; Yip, H.-L.; Li, C.-Z.; Li, Y.; Hsu, C.-S.; Cheng, Y.-J.; Chen, H.; Jen, A. K. Y. Adv. Energy Mater. 2014, 4, 1301645.
[72] Yuan, J.; Gu, J.; Shi, G.; Sun, J.; Wang, H. Q.; Ma, W. Sci. Rep. 2016, 6, 26459.
[73] Xu, X.; Yu, T.; Bi, Z.; Ma, W.; Li, Y.; Peng, Q. Adv. Mater. 2018, 30, 1703973.
[74] Scharber, M. C.; Mühlbacher, D.; Koppe, M.; Denk, P.; Waldauf, C.; Heeger, A. J.; Brabec, C. J. Adv. Mater. 2006, 18, 789.
[75] Dennler, G.; Scharber, M. C.; Ameri, T.; Denk, P.; Forberich, K.; Waldauf, C.; Brabec, C. J. Adv. Mater. 2008, 20, 579.
[76] Zhao, C.; Wang, Z.; Zhou, K.; Ge, H.; Zhang, Q.; Jin, L.; Wang, W.; Yin, S. Acta Chimica Sinica 2016, 74, 251(in Chinese). (赵蔡斌, 王占领, 周科, 葛红光, 张强, 靳玲侠, 王文亮, 尹世伟, 化学学报, 2016, 74, 251.)
[77] Fu, H.; Wang, Z.; Sun, Y. Angew. Chem., Int. Ed. 2019, 58, 4442.
[78] Meng, L.; Yi, Y. Q.; Wan, X.; Zhang, Y.; Ke, X.; Kan, B.; Wang, Y.; Xia, R.; Yip, H. L.; Li, C.; Chen, Y. Adv. Mater. 2019, 31, e1804723.
[79] Hou, J.; Inganas, O.; Friend, R. H.; Gao, F. Nat. Mater. 2018, 17, 119.
[80] Cheng, P.; Li, G.; Zhan, X.; Yang, Y. Nature Photonics 2018, 12, 131.
[81] Shao, R.; Yang, X.; Yin, S.; Wang, W. Acta Chimica Sinica 2016, 74, 676(in Chinese). (邵绒, 杨鑫博, 尹世伟, 王文亮, 化学学报, 2016, 74, 676.)
[82] Liu, W.; Li, S.; Huang, J.; Yang, S.; Chen, J.; Zuo, L.; Shi, M.; Zhan, X.; Li, C. Z.; Chen, H. Adv. Mater. 2016, 28, 9729.
[83] Chen, S.; Yao, H.; Hu, B.; Zhang, G.; Arunagiri, L.; Ma, L.-K.; Huang, J.; Zhang, J.; Zhu, Z.; Bai, F.; Ma, W.; Yan, H. Adv. Energy Mater. 2018, 8, 1800529.
[84] Lin, Y.; Wang, J.; Zhang, Z. G.; Bai, H.; Li, Y.; Zhu, D.; Zhan, X. Adv. Mater. 2015, 27, 1170.
[85] Wang, G.; Melkonyan, F. S.; Facchetti, A.; Marks, T. J. Angew. Chem., Int. Ed. 2019, 58, 4129.
[86] Yan, H.; Chen, Z.; Zheng, Y.; Newman, C.; Quinn, J. R.; Dotz, F.; Kastler, M.; Facchetti, A. Nature 2009, 457, 679.
[87] Cheng, P.; Liu, Y.; Chang, S.-Y.; Li, T.; Sun, P.; Wang, R.; Cheng, H.-W.; Huang, T.; Meng, L.; Nuryyeva, S.; Zhu, C.; Wei, K.-H.; Sun, B.; Zhan, X.; Yang, Y. Joule 2019, 3, 432.
[88] Yue, Q.; Zhou, Z.; Xu, S.; Zhang, J.; Zhu, X. J. Mater. Chem. A 2018, 6, 13588.
[89] Kim, J.-H.; Park, J. B.; Xu, F.; Kim, D.; Kwak, J.; Grimsdale, A. C.; Hwang, D.-H. Energy Environ. Sci. 2014, 7, 4118.
[90] Li, K.; Li, Z.; Feng, K.; Xu, X.; Wang, L.; Peng, Q. J. Am. Chem. Soc. 2013, 135, 13549.
[91] Glaser, K.; Beu, P.; Bahro, D.; Sprau, C.; Pütz, A.; Colsmann, A. J. Mater. Chem. A 2018, 6, 9257.
[92] Zuo, L.; Yu, J.; Shi, X.; Lin, F.; Tang, W.; Jen, A. K. Adv. Mater. 2017, 29, 1702547.
[93] Li, W.; Furlan, A.; Hendriks, K. H.; Wienk, M. M.; Janssen, R. A. J. Am. Chem. Soc. 2013, 135, 5529.
[94] Qin, Y.; Uddin, M. A.; Chen, Y.; Jang, B.; Zhao, K.; Zheng, Z.; Yu, R.; Shin, T. J.; Woo, H. Y.; Hou, J. Adv. Mater. 2016, 28, 9416.
[95] Duan, C.; Furlan, A.; van Franeker, J. J.; Willems, R. E. M.; Wienk, M. M.; Janssen, R. A. J. Adv. Mater. 2015, 27, 4461.
[96] Hagemann, O.; Bjerring, M.; Nielsen, N. C.; Krebs, F. C. Sol. Energy Meter. Sol. Cells 2008, 92, 1327.
[97] Tang, Z.; George, Z.; Ma, Z.; Bergqvist, J.; Tvingstedt, K.; Vandewal, K.; Wang, E.; Andersson, L. M.; Andersson, M. R.; Zhang, F.; Inganäs, O. Adv. Energy Mater. 2012, 2, 1467.
[98] Li, N.; Baran, D.; Forberich, K.; Machui, F.; Ameri, T.; Turbiez, M.; Carrasco-Orozco, M.; Drees, M.; Facchetti, A.; Krebs, F. C.; Brabec, C. J. Energy Environ. Sci. 2013, 6, 3407.
[99] Dou, L.; Gao, J.; Richard, E.; You, J.; Chen, C. C.; Cha, K. C.; He, Y.; Li, G.; Yang, Y. J. Am. Chem. Soc. 2012, 134, 10071.
[100] Zuo, L.; Shi, X.; Fu, W.; Jen, A. K. Adv. Mater. 2019, 31, e1901683.
[101] Liu, F.; Zhou, Z.; Zhang, C.; Zhang, J.; Hu, Q.; Vergote, T.; Liu, F.; Russell, T. P.; Zhu, X. Adv. Mater. 2017, 29, 1606574.
[102] Li, Y.; Lin, J. D.; Liu, X.; Qu, Y.; Wu, F. P.; Liu, F.; Jiang, Z. Q.; Forrest, S. R. Adv. Mater. 2018, 30, e1804416.
[103] Zuo, L.; Chueh, C. C.; Xu, Y. X.; Chen, K. S.; Zang, Y.; Li, C. Z.; Chen, H.; Jen, A. K. Adv. Mater. 2014, 26, 6778.
[104] Dou, L.; Chen, C.-C.; Yoshimura, K.; Ohya, K.; Chang, W.-H.; Gao, J.; Liu, Y.; Richard, E.; Yang, Y. Macromolecules 2013, 46, 3384.
[105] Zheng, Z.; Zhang, S.; Zhang, J.; Qin, Y.; Li, W.; Yu, R.; Wei, Z.; Hou, J. Adv. Mater. 2016, 28, 5133.
[106] Peng, Q.; Huang, Q.; Hou, X.; Chang, P.; Xu, J.; Deng, S. Chem. Commun. 2012, 48, 11452.
[107] Yuan, J.; Ford, M. J.; Xu, Y.; Zhang, Y.; Bazan, G. C.; Ma, W. Adv. Energy Mater. 2018, 8, 1703291.
[108] Chen, C. C.; Chang, W. H.; Yoshimura, K.; Ohya, K.; You, J.; Gao, J.; Hong, Z.; Yang, Y. Adv. Mater. 2014, 26, 5670.
[109] Yusoff, A. R. b. M.; Kim, D.; Kim, H. P.; Shneider, F. K.; da Silva, W. J.; Jang, J. Energy Environ. Sci. 2015, 8, 303.
[110] Di Carlo Rasi, D.; Hendriks, K. H.; Wienk, M. M.; Janssen, R. A. J. Adv. Mater. 2018, e1803836.
[111] Machui, F.; Hösel, M.; Li, N.; Spyropoulos, G. D.; Ameri, T.; Søndergaard, R. R.; Jørgensen, M.; Scheel, A.; Gaiser, D.; Kreul, K.; Lenssen, D.; Legros, M.; Lemaitre, N.; Vilkman, M.; Välimäki, M.; Nordman, S.; Brabec, C. J.; Krebs, F. C. Energy Environ. Sci. 2014, 7, 2792.
[112] Gu, X.; Shaw, L.; Gu, K.; Toney, M. F.; Bao, Z. Nat. Commun. 2018, 9, 534.
[113] Li, N.; Brabec, C. J. Energy Environ. Sci. 2015, 8, 2902.
[114] Guo, F.; Li, N.; Radmilović, V. V.; Radmilović, V. R.; Turbiez, M.; Spiecker, E.; Forberich, K.; Brabec, C. J. Energy Environ. Sci. 2015, 8, 1690.
[115] Andersen, T. R.; Dam, H. F.; Hösel, M.; Helgesen, M.; Carlé, J. E.; Larsen-Olsen, T. T.; Gevorgyan, S. A.; Andreasen, J. W.; Adams, J.; Li, N.; Machui, F.; Spyropoulos, G. D.; Ameri, T.; Lemaître, N. e.; Legros, M.; Scheel, A.; Gaiser, D.; Kreul, K.; Berny, S.; Lozman, O. R.; Nordman, S.; Välimäki, M.; Vilkman, M.; Søndergaard, R. R.; Jørgensen, M.; Brabec, C. J.; Krebs, F. C. Energy Environ. Sci. 2014, 7, 2925.
[116] Dam, H. F.; Andersen, T. R.; Pedersen, E. B. L.; Thydén, K. T. S.; Helgesen, M.; Carlé, J. E.; Jørgensen, P. S.; Reinhardt, J.; Søndergaard, R. R.; Jørgensen, M.; Bundgaard, E.; Krebs, F. C.; Andreasen, J. W. Adv. Energy Mater. 2015, 5, 1400736.
[117] Di Carlo Rasi, D.; Hendriks, K. H.; Wienk, M. M.; Janssen, R. A. J. Adv. Energy Mater. 2017, 7, 1701664.
[118] Gilot, J.; Wienk, M. M.; Janssen, R. A. J. Adv. Funct. Mater. 2010, 20, 3904.
[119] Alemu, D.; Wei, H.-Y.; Ho, K.-C.; Chu, C.-W. Energy Environ. Sci. 2012, 5, 9662.
[120] Na, S.-I.; Kim, S.-S.; Jo, J.; Kim, D.-Y. Adv. Mater. 2008, 20, 4061.
[121] Spyropoulos, G. D.; Kubis, P.; Li, N.; Baran, D.; Lucera, L.; Salvador, M.; Ameri, T.; Voigt, M. M.; Krebs, F. C.; Brabec, C. J. Energy Environ. Sci. 2014, 7, 3284.
[122] Du, X.; Zeng, Q.; Zhang, H.; Yang, B. Chin. J. Chem. 2017, 35, 551.
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