New Fullerene Derivative as an n-Type Material for Highly Efficient, Flexible Perovskite Solar Cells of a p-i-n Configuration

被引:39
作者
Ahmad, Taimoor [1 ,2 ]
Wilk, Barbara [3 ]
Radicchi, Eros [4 ,5 ]
Fuentes Pineda, Rosinda [1 ]
Spinelli, Pierpaolo [1 ]
Herterich, Jan [6 ]
Castriotta, Luigi Angelo [2 ]
Dasgupta, Shyantan [3 ]
Mosconi, Edoardo [5 ]
De Angelis, Filippo [4 ,5 ]
Kohlstaedt, Markus [6 ]
Wuerfel, Uli [6 ]
Di Carlo, Aldo [2 ]
Wojciechowski, Konrad [1 ,3 ]
机构
[1] Saule Technol, Wroclaw Technol Pk,Dunska 11,Sigma Bldg, PL-54130 Wroclaw, Poland
[2] Univ Roma Tor Vergata, Dept Elect Engn, Ctr Hybrid & Organ Solar Energy CHOSE, Via Politecn 1, I-00133 Rome, Italy
[3] Saule Res Inst, Wroclaw Technol Pk,Dunska 11,Sigma Bldg, PL-54130 Wroclaw, Poland
[4] Univ Perugia, Dept Chem Biol & Biotechnol, Via Elce Sotto 8, I-06123 Perugia, Italy
[5] Ist CNR Sci & Tecnol Chim Giulio Natta CNR SCITEC, Via Elce Sotto 8, I-06123 Perugia, Italy
[6] Fraunhofer Inst Solar Energy Syst ISE, Heidenhofstr 2, D-79110 Freiburg, Germany
基金
欧盟地平线“2020”;
关键词
electron transport materials; flexible solar cells; fullerene derivative; ink-jet; perovskites; ELECTRONIC-PROPERTIES; PCBM; DYNAMICS;
D O I
10.1002/adfm.202004357
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Metal halide perovskites have raised huge excitement in the field of emerging photovoltaic technologies. The possibility of fabricating perovskite solar cells (PSCs) on lightweight, flexible substrates, with facile processing methods, provides very attractive commercial possibilities. Nevertheless, efficiency values for flexible devices reported in the literature typically fall short in comparison to rigid, glass-based architectures. Here, a solution-processable fullerene derivative, [6,6]-phenyl-C61 butyric acidn-hexyl ester (PCBC6), is reported as a highly efficient alternative to the commonly used n-type materials in perovskite solar cells. The cells with the PCBC6 layer deliver a power conversion efficiency of 18.4%, fabricated on a polymer foil, with an active area of 1 cm(2). Compared to the phenyl-C61-butyric acid methyl ester benchmark, significantly enhanced photovoltaic performance is obtained, which is primarily attributed to the improved layer morphology. It results in a better charge extraction and reduced nonradiative recombination at the perovskite/electron transporting material interface. Solution-processed PCBC6 films are uniform, smooth and displayed conformal capping of perovskite layer. Additionally, a scalable processing of PCBC6 layers is demonstrated with an ink-jet printing technique, producing flexible PSCs with efficiencies exceeding 17%, which highlights the prospects of using this material in an industrial process.
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页数:11
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