Efficient and thermally stable inverted perovskite solar cells by introduction of non-fullerene electron transporting materials
- Authors
- Heo, Jin Hyuck; Lee, Seung-Chul; Jung, Su-Kyo; Kwon, O-Pil; Im, Sang Hyuk
- Issue Date
- 21-10월-2017
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.39, pp.20615 - 20622
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 5
- Number
- 39
- Start Page
- 20615
- End Page
- 20622
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/81875
- DOI
- 10.1039/c7ta06900f
- ISSN
- 2050-7488
- Abstract
- Highly efficient and thermally stable inverted CH3NH3PbI3 (MAPbI(3)) and HC(NH2)(2)PbI3-xBrx (FAPbI(3-x)Br(x)) perovskite planar solar cells are demonstrated by using a N, N '-bis(phenylmethyl) naphthalene1,4,5,8- tetracarboxylic diimide (NDI-PM)-based electron transporting material (ETM) instead of a conventional fullerene-based phenyl-C-61-butyric acid methyl ester (PCBM) ETM. The MAPbI(3) and FAPbI(3-x)Br(x) 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.
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