Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Akin, Seckin UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, Michael UNSPECIFIED orcid.org/0000-0002-1035-3139 UNSPECIFIED Uchida, Ryusuke UNSPECIFIED UNSPECIFIED UNSPECIFIED Arora, Neha UNSPECIFIED UNSPECIFIED UNSPECIFIED Jacopin, Gwenole UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Yuhang UNSPECIFIED UNSPECIFIED UNSPECIFIED Hertel, Dirk UNSPECIFIED UNSPECIFIED UNSPECIFIED Meerholz, Klaus UNSPECIFIED orcid.org/0000-0001-7450-4672 UNSPECIFIED Mena-Osteritz, Elena UNSPECIFIED UNSPECIFIED UNSPECIFIED Baeuerle, Peter UNSPECIFIED orcid.org/0000-0003-2017-4414 UNSPECIFIED Zakeeruddin, Shaik Mohammed UNSPECIFIED UNSPECIFIED UNSPECIFIED Dar, M. Ibrahim UNSPECIFIED UNSPECIFIED UNSPECIFIED Graetzel, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED
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:	Keywords Language DOPANT-FREE Multiple languages Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/32275