Molecular engineering of face-on oriented dopant-free hole transporting material for perovskite solar cells with 19% PCE
Through judicious molecular engineering, novel dopant-free star-shaped D-π-A type hole transporting materials coded KR355, KR321, and KR353 were systematically designed, synthesized and characterized. KR321 has been revealed to form a particular face-on organization on perovskite films favoring vert...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
29 March 2017
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| In: |
Journal of materials chemistry. A, Materials for energy and sustainability
Year: 2017, Volume: 5, Issue: 17, Pages: 7811-7815 |
| ISSN: | 2050-7496 |
| DOI: | 10.1039/C7TA01718A |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1039/C7TA01718A Verlag, Volltext: https://pubs.rsc.org/en/content/articlelanding/2017/ta/c7ta01718a 
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| Author Notes: | Kasparas Rakstys, Sanghyun Paek, Peng Gao, Paul Gratia, Tomasz Marszalek, Giulia Grancini, Kyung Taek Cho, Kristijonas Genevicius, Vygintas Jankauskas, Wojciech Pisula, Mohammad Khaja Nazeeruddin |
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| 245 | 1 | 0 | |a Molecular engineering of face-on oriented dopant-free hole transporting material for perovskite solar cells with 19% PCE |c Kasparas Rakstys, Sanghyun Paek, Peng Gao, Paul Gratia, Tomasz Marszalek, Giulia Grancini, Kyung Taek Cho, Kristijonas Genevicius, Vygintas Jankauskas, Wojciech Pisula, Mohammad Khaja Nazeeruddin |
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| 520 | |a Through judicious molecular engineering, novel dopant-free star-shaped D-π-A type hole transporting materials coded KR355, KR321, and KR353 were systematically designed, synthesized and characterized. KR321 has been revealed to form a particular face-on organization on perovskite films favoring vertical charge carrier transport and for the first time, we show that this particular molecular stacking feature resulted in a power conversion efficiency over 19% in combination with mixed-perovskite (FAPbI3)0.85(MAPbBr3)0.15. The obtained 19% efficiency using a pristine hole transporting layer without any chemical additives or doping is the highest, establishing that the molecular engineering of a planar donor core, π-spacer and periphery acceptor leads to high mobility, and the design provides useful insight into the synthesis of next-generation HTMs for perovskite solar cells and optoelectronic applications. | ||
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