Drigo, Nikita, Roldan-Carmona, Cristina, Franckevicius, Marius, Lin, Kun-Han, Gegevicius, Rokas, Kim, Hobeom, Schouwink, Pascal A., Sutanto, Albertus A., Olthof, Selina ORCID: 0000-0002-8871-1549, Sohail, Muhammad, Meerholz, Klaus ORCID: 0000-0001-7450-4672, Gulbinas, Vidmantas, Corminboeuf, Clemence, Paek, Sanghyun and Nazeeruddin, Mohammad Khaja (2020). Doped but Stable: Spirobisacridine Hole Transporting Materials for Hysteresis-Free and Stable Perovskite Solar Cells. J. Am. Chem. Soc., 142 (4). S. 1792 - 1801. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5126

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Abstract

Four spirobisacridine (SBA) hole-transporting materials were synthesized and employed in perovskite solar cells (PSCs). The molecules bear electronically inert alkyl chains of different length and bulkiness, attached to in-plane N atoms of nearly orthogonal spiro-connected acridines. Di-p-methoxyphenylamine (DMPA) substituents tailored to the central SBA-platform define electronic properties of the materials mimicking the structure of the benchmark 2,2',7,7'-tetrakis(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (spiro-MeOTAD), while the alkyl pending groups affect molecular packing in thin films and affect the long-term performance of PSCs. Devices with SBA-based hole transporting layers (HTL) attain efficiencies on par with spiro-MeOTAD. More importantly, solar cells with the new HTMs are hysteresis-free and demonstrate good operational stability, despite being doped as spiro-MeOTAD. The best performing MeSBA-DMPA retained 88% of the initial efficiency after a 1000 h aging test under constant illumination. The results clearly demonstrate that SBA-based compounds are potent candidates for a design of new HTMs for PSCs with improved longevity.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Drigo, NikitaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roldan-Carmona, CristinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Franckevicius, MariusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lin, Kun-HanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gegevicius, RokasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, HobeomUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schouwink, Pascal A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sutanto, Albertus A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olthof, SelinaUNSPECIFIEDorcid.org/0000-0002-8871-1549UNSPECIFIED
Sohail, MuhammadUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meerholz, KlausUNSPECIFIEDorcid.org/0000-0001-7450-4672UNSPECIFIED
Gulbinas, VidmantasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Corminboeuf, ClemenceUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paek, SanghyunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nazeeruddin, Mohammad KhajaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-348019
DOI: 10.1021/jacs.9b07166
Journal or Publication Title: J. Am. Chem. Soc.
Volume: 142
Number: 4
Page Range: S. 1792 - 1801
Date: 2020
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 1520-5126
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
LONG-TERM STABILITY; INDUCED DEGRADATION; HIGHLY EFFICIENT; PERFORMANCE; INTERFACES; MIGRATIONMultiple languages
Chemistry, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/34801

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