Efficient and thermally stable inverted perovskite solar cells by introduction of non-fullerene electron transporting materials

Jin Hyuck Heo, Seung Chul Lee, Su Kyo Jung, O. Pil Kwon, Sang Hyuk Im

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73 Citations (Scopus)

Abstract

Highly efficient and thermally stable inverted CH3NH3PbI3 (MAPbI3) and HC(NH2)2PbI3-xBrx (FAPbI3-xBrx) perovskite planar solar cells are demonstrated by using a N,N′-bis(phenylmethyl)naphthalene-1,4,5,8-tetracarboxylic diimide (NDI-PM)-based electron transporting material (ETM) instead of a conventional fullerene-based phenyl-C61-butyric acid methyl ester (PCBM) ETM. The MAPbI3 and FAPbI3-xBrx devices with the NDI-PM-based ETM exhibit 18.4% and 19.6% power conversion efficiency under an illumination of 1 Sun (100 mW cm-2), respectively, which are comparable to the efficiency of PCBM ETM-based ones (18.9% and 20.0%). The improved thermal stability of NDI-based perovskite solar cells is attributed to much stronger hydrogen bonds in the NDI-PM molecular crystals than the PCBM crystals.

Original languageEnglish
Pages (from-to)20615-20622
Number of pages8
JournalJournal of Materials Chemistry A
Volume5
Issue number39
DOIs
Publication statusPublished - 2017

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning and the Ministry of Education (Basic Science Research Program (No. 2014R1A5A1009799 and 2009-0093826), Technology Development Program to Solve Climate Change (No. 2015M1A2A2055631) and Global Frontier R&D Program on Center for Multiscale Energy System (No. 2012M3A6A7054855)) and the Ministry of Trade, Industry & Energy, Republic of Korea (New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (No. 20163010012470)).

Publisher Copyright:
© 2017 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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