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Electron Transport Layer-Free Solar Cells Based on Perovskite? Fullerene Blend Films with Enhanced Performance and Stability

Electron Transport Layer-Free Solar Cells Based on Perovskite? Fullerene Blend Films with Enhanced Performance and Stability

Authors :
Andrey Chuvilin
Iván Mora-Seró
Hans J. Grande
Ramón Tena-Zaera
Jorge Pascual
Ivet Kosta
Eva M. Barea
Germán Cabañero
Juan Luis Delgado
Thi Tuyen Ngo
Publication Year :
2016
Publisher :
Wiley, 2016.

Abstract

The solution processing of pinhole-free methylammonium lead triiodide perovskite–C70 fullerene (MAPbI3:C70) blend films on fluorine-doped tin oxide (FTO)-coated glass substrates is presented. Based on this approach, a simplified and robust protocol for the preparation of efficient electron-transport layer (ETL)-free perovskite solar cells is described. Power conversion efficiency (PCE) of 13.6 % under AM 1.5 G simulated sunlight is demonstrated for these devices. Comparative impedance spectroscopy and photostability analysis of the MAPbI3:C70 and single MAPbI3 films compared with conventional compact TiO2 ETL-based devices are shown. The beneficial impact of using MAPbI3:C70 blend films is emphasized. We thank Sandra Rodriguez for the excellent technical support. This work was partially supported by Basque Government and MINECO (Ministerio de Economía y Competitividad, Spain), under projects PC2015-1-03 (16-79), MAT2013-47192-C3-1-R MAT2013-47192-C3-2-R, CTQ2015-70921-P and MAT2015-70611-ERC. J.L.D. acknowledges Ikerbasque, the Basque Foundation for Science, for an “Ikerbasque Research Fellow” contract, Polymat Foundation, and MINECO of Spain for IEDI-2015-00666 grant. T.T.N. acknowledges the MINECO of Spain for her Ph.D. scholarship. J.P.M. and J.L.D. acknowledge Iberdrola Foundation for financial support.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....fb2bd25f77ba2cbb808fa7323ce4905e