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Cyclometalated Pt complex based random terpolymers as electron acceptors for all polymer solar cells

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Gao, Xuyu ; Wang, Menghan ; Cao, Xudong ; Yang, Jie ; Zhong, Yu ; Zhang, Zhiguo ; Li, Cheng ; Hüttner, Sven ; Tao, Youtian ; Li, Yongfang ; Huang, Wei:
Cyclometalated Pt complex based random terpolymers as electron acceptors for all polymer solar cells.
In: Journal of Polymer Science Part A: Polymer Chemistry. Bd. 56 (1 Januar 2018) Heft 1 . - S. 105-115.
ISSN 0360-6376
DOI: https://doi.org/10.1002/pola.28877

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Abstract

Various molar ratios of platinum complexes were introduced into the conjugated backbone of the well-studied polyN,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)](PNDIT2) acceptor polymer through random terpolymer approach. Terpolymers PNDIT2Ptx (x = 1, 2 and 5) exhibited slightly higher melting point (Tm), crystallization temperature, HOMO and LUMO energy levels than the control PNDIT2 copolymer due to the introduction of small amount of weaker electron-withdrawing bulky rigid Pt complex instead of strong electron-withdrawing flexible naphthalene diimide. When blended them with poly2,6′-4,8-di(5-ethylhexylthienyl)benzo1,2-b;3,3-b dithiophene 3-fluoro-2(2-ethylhexyl)carbonylthieno3,4-bthiophenediyl (PTB7-Th) in all polymer solar cells, enhanced power conversion efficiency of 4.51% (3.74%) was obtained in terpolymer PNDIT2Pt1 based device compared to 3.88% (3.24%) of the control PNDIT2 at the same inverted (conventional) device conditions. The enhancement was probably ascribed to higher hole and electron transport ability and more efficient charge separation. To the best of our knowledge, this is the first example of random terpolymer acceptors based on heavy metal complexes.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: conjugated polymers; heavy metal complex; non-fullerene acceptor; polymer solar cells
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Solarenergie > Juniorprofessur Solarenergie - Juniorprof. Dr. Sven Hüttner
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Solarenergie
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Emerging Fields
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 12 Jan 2018 11:31
Letzte Änderung: 12 Jan 2018 11:31
URI: https://eref.uni-bayreuth.de/id/eprint/41722