The Role of Rubidium in Multiple-Cation-Based High-Efficiency Perovskite Solar Cells

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 29(2017), 40 vom: 09. Okt.
1. Verfasser: Yadav, Pankaj (VerfasserIn)
Weitere Verfasser: Dar, M Ibrahim, Arora, Neha, Alharbi, Essa A, Giordano, Fabrizio, Zakeeruddin, Shaik Mohammed, Grätzel, Michael
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article charge-carrier recombination impedance spectroscopy interfacial properties perovskite solar cells
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520 |a Perovskite solar cells (PSCs) based on cesium (Cs)- and rubidium (Rb)-containing perovskite films show highly reproducible performance; however, a fundamental understanding of these systems is still emerging. Herein, this study has systematically investigated the role of Cs and Rb cations in complete devices by examining the transport and recombination processes using current-voltage characteristics and impedance spectroscopy in the dark. As the credibility of these measurements depends on the performance of devices, this study has chosen two different PSCs, (MAFACs)Pb(IBr)3 (MA = CH3 NH3+ , FA = CH(NH2 )2+ ) and (MAFACsRb)Pb(IBr)3 , yielding impressive performances of 19.5% and 21.1%, respectively. From detailed studies, this study surmises that the confluence of the low trap-assisted charge-carrier recombination, low resistance offered to holes at the perovskite/2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene interface with a low series resistance (Rs ), and low capacitance leads to the realization of higher performance when an extra Rb cation is incorporated into the absorber films. This study provides a thorough understanding of the impact of inorganic cations on the properties and performance of highly efficient devices, and also highlights new strategies to fabricate efficient multiple-cation-based PSCs 
650 4 |a Journal Article 
650 4 |a charge-carrier recombination 
650 4 |a impedance spectroscopy 
650 4 |a interfacial properties 
650 4 |a perovskite solar cells 
700 1 |a Dar, M Ibrahim  |e verfasserin  |4 aut 
700 1 |a Arora, Neha  |e verfasserin  |4 aut 
700 1 |a Alharbi, Essa A  |e verfasserin  |4 aut 
700 1 |a Giordano, Fabrizio  |e verfasserin  |4 aut 
700 1 |a Zakeeruddin, Shaik Mohammed  |e verfasserin  |4 aut 
700 1 |a Grätzel, Michael  |e verfasserin  |4 aut 
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773 1 8 |g volume:29  |g year:2017  |g number:40  |g day:09  |g month:10 
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