Abstract
Mesoscopic perovskite solar cells (PSCs) usually show superior photovoltaic performance to their planar counterparts because of the mesoporous electron transport layers (ETLs) benefiting for perovskite crystal growth and electron transport. However, the preparation of high-quality mesoporous ETLs needs selecting sizable semiconductor nanocrystals commonly within 20–50 nm, smaller or larger nanocrystals will lead to either too narrow pores to effectively infiltrate perovskite materials or too small surface area to efficiently extract charges from perovskite materials. Using sizable semiconductor microspheres can solve the issue, whereas it is also not easy to synthesis sizable semiconductor microspheres. Here, a novel emulsion-based bottom-up self-assembly strategy is used to prepare small size (about 150 nm) TiO2 microspheres from ultra-small (about 3.6 nm) TiO2 nanocrystals. The as-prepared mesoscopic PSCs can yield a champion PCE as high as 19.27% with a much smaller current–voltage hysteresis compared with those of the planar one. Specially, the emulsion-based bottom-up self-assembly strategy is a general way for preparing microspheres from wide kinds of semiconductor nanocrystals, so it will greatly expand the material selection range for preparing efficient mesoscopic PSCs and even inverted mesoscopic devices.
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References
A. Kojima, K. Teshima, Y. Shirai, T. Miyasaka, J. Am. Chem. Soc. 131, 6050 (2009)
Q. Jiang, Y. Zhao, X. Zhang, X. Yang, Y. Chen, Z. Chu, Q. Ye, X. Li, Z. Yin, J. You, Nat. Photon. 13, 460 (2019)
N.J. Jeon, H. Na, E.H. Jung, T.Y. Yang, Y.G. Lee, G. Kim, H.W. Shin, S.I. Seok, J. Lee, J. Seo, Nat. Energy 3, 682 (2018)
E.H. Jung, N.J. Jeon, E.Y. Park, C.S. Moon, T.J. Shin, T.Y. Yang, J.H. Noh, J. Seo, Nature 567, 511 (2019)
X.Z. Zhang, T.Y. Wu, X.X. Xu, L. Zhang, J. Tang, X. He, J.H. Wu, Z. Lan, Sol. Energy Mater. Sol. Cells 178, 65 (2018)
G. Yang, H.W. Lei, H. Tao, X.L. Zheng, J.J. Ma, Q. Liu, W.J. Ke, Z.L. Chen, L.B. Xiong, P.L. Qin, Z. Chen, M.C. Qin, X.H. Lu, Y.F. Yan, G.J. Fang, Small 13, 1601769 (2017)
S.L. Fernandes, A.C. Veron, N.F.A. Neto, F.A. Nuesch, J.H.D.D. Silva, M.A. Zaghete, C.F.D.O. Graeff, Mater. Lett. 181, 103 (2016)
S.S. Shin, E.J. Yeom, W.S. Yang, S. Hur, M.G. Kim, J. Im, J. Seo, J.H. Noh, S.I. Seok, Science 356, 167 (2017)
Y. Huang, J. Zhu, Y. Ding, S.H. Chen, C.N. Zhang, S.Y. Dai, A.C.S. Appl, Mater. Interfaces 8, 8162 (2016)
X. Hou, L.K. Pan, S.M. Huang, W. Ou-Yang, X.H. Chen, Electrochimi. Acta. 236, 351 (2017)
S. Yu, J.S. You, I.S. Yang, P. Kang, S.B. Rawal, S.D. Sung, W.I. Lee, J. Power Sources 325, 7 (2016)
Y. Ding, L. Zhou, L. Mo, L. Jiang, L.H. Hu, Z.Q. Li, S.H. Chen, S.Y. Dai, Adv. Funct. Mater. 25, 5946 (2015)
I.S. Yang, J.S. You, S.D. Sung, C.W. Chung, J. Kim, W.I. Lee, Nano Energy 20, 272 (2016)
F. Bai, D. Wang, Z. Huo, W. Chen, L. Liu, X. Liang, C. Chen, X. Wang, Q. Peng, Y. Li, Angew. Chem. Int. Ed. 46, 6650 (2007)
L.F. Que, Z. Lan, W.X. Wu, J.H. Wu, J.M. Lin, M.L. Huang, J. Power Sources 268, 670 (2014)
N.G. Park, J. Phys. Chem. Lett. 4, 2423 (2013)
Y. Du, C. Xin, W. Huang, B. Shi, Y. Ding, C. Wei, Y. Zhao, Y. Li, X. Zhang, ACS Sustain. Chem. Eng. 6, 16806 (2018)
Y. Lv, B. Cai, Y. Wu, S. Wang, Q. Jiang, Q. Ma, J. Liu, W.H. Zhang, J. Energy Chem. 27, 951 (2018)
S. Teo, Z. Guo, Z. Xu, C. Zhang, Y. Kamata, S. Hayase, T. Ma, Chemsuschem 12, 518 (2019)
J.Y. Seo, H.S. Kim, S. Akin, M. Stojanovic, E. Simon, M. Fleischer, A. Hagfeldt, S.M. Zakeeruddin, M. Gratzel, Energy Environ. Sci. 11, 2985 (2018)
Z.L. Zhu, X.L. Zheng, Y. Bai, T. Zhang, Z.L. Wang, S. Xiao, S.H. Yang, Phys. Chem. Chem. Phys. 17, 18265 (2015)
Acknowledgements
The authors would like to acknowledge the supports of the National Natural Science Foundation of China (Grant No. U1705256), the Natural Science Foundation of Fujian Province (Grant No. 2019J02012), the Fujian Provincial Youth Top-notch Talents Supporting Program and the Graphene Powder & Composite Research Center of Fujian Province (Grant No. 2017H2001).
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Wang, D., Li, W., Deng, K. et al. Efficient mesoscopic perovskite solar cells from emulsion-based bottom-up self-assembled TiO2 microspheres. J Mater Sci: Mater Electron 31, 1969–1975 (2020). https://doi.org/10.1007/s10854-019-02716-9
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DOI: https://doi.org/10.1007/s10854-019-02716-9