Akin, Seckin, Bauer, Michael ORCID: 0000-0002-1035-3139, Uchida, Ryusuke, Arora, Neha, Jacopin, Gwenole, Liu, Yuhang, Hertel, Dirk, Meerholz, Klaus ORCID: 0000-0001-7450-4672, Mena-Osteritz, Elena, Baeuerle, Peter ORCID: 0000-0003-2017-4414, Zakeeruddin, Shaik Mohammed, Dar, M. Ibrahim and Graetzel, Michael (2020). Cyclopentadithiophene-Based Hole-Transporting Material for Highly Stable Perovskite Solar Cells with Stabilized Efficiencies Approaching 21%. ACS Appl. Energ. Mater., 3 (8). S. 7456 - 7464. WASHINGTON: AMER CHEMICAL SOC. ISSN 2574-0962

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Abstract

There is an urge to develop new hole-transporting materials (HTMs) for perovskite solar cells (PSCs), which can yield comparable power conversion efficiencies (PCEs) yet mitigate the issue of stability associated with the state-of-the-art HTM Spiro-MeOTAD. Herein, we designed and prepared C-2v-symmetric spiro-configured HTM-1 comprising a central acridine-cyclopentadithiophene core unit flanked with triarylamine moieties. PSCs containing a 40 nm thin HTM-1 layer for hole extraction yielded a stabilized PCE approaching 21% under standard illumination. Owing to its higher hole mobility (mu(h)) at low electric field, an impressive short-circuit current density (J(SC)) of 24.7 mA cm(-2) and a high fill factor (FF) of 0.77 have been achieved. More importantly, HTM-1-based PSCs presented an excellent long-term operational stability under continuous illumination for 400 h and thermal stability at 80 degrees C, which can be ascribed to its high glass transition temperature of 168 degrees C and superior moisture tolerance. Arguably, the confluence of high performance and remarkable stability will lead to the development of technologically interesting new, stable, and efficient PSCs.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Akin, SeckinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bauer, MichaelUNSPECIFIEDorcid.org/0000-0002-1035-3139UNSPECIFIED
Uchida, RyusukeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Arora, NehaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacopin, GwenoleUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, YuhangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hertel, DirkUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meerholz, KlausUNSPECIFIEDorcid.org/0000-0001-7450-4672UNSPECIFIED
Mena-Osteritz, ElenaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baeuerle, PeterUNSPECIFIEDorcid.org/0000-0003-2017-4414UNSPECIFIED
Zakeeruddin, Shaik MohammedUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dar, M. IbrahimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Graetzel, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-322751
DOI: 10.1021/acsaem.0c00811
Journal or Publication Title: ACS Appl. Energ. Mater.
Volume: 3
Number: 8
Page Range: S. 7456 - 7464
Date: 2020
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 2574-0962
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
DOPANT-FREEMultiple languages
Chemistry, Physical; Energy & Fuels; Materials Science, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/32275

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