Triphenylamine-Based Push-Pull Molecule for Photovoltaic Applications: From Synthesis to Ultrafast Device Photophysics

Kozlov OV, Liu X, Luponosov YN, Solodukhin AN, Toropynina VY, Min J, Buzin MI, Peregudova SM, Brabec C, Ponomarenko SA, Pshenichnikov MS (2017)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2017

Journal

Journal of Physical Chemistry C American Chemical Society

Book Volume: 121

Pages Range: 6424-6435

Journal Issue: 12

DOI: 10.1021/acs.jpcc.6b12068

Abstract

Small push-pull molecules attract much attention as prospective donor materials for organic solar cells (OSCs). By chemical engineering, it is possible to combine a number of attractive properties such as broad absorption, efficient charge separation, and vacuum and solution processabilities in a single molecule. Here we report the synthesis and early time photophysics of such a molecule, TPA-2T-DCV-Me, based on the triphenylamine (TPA) donor core and dicyanovinyl (DCV) acceptor end group connected by a thiophene bridge. Using time-resolved photoinduced absorption and photoluminescence, we demonstrate that in blends with [70]PCBM the molecule works both as an electron donor and hole acceptor, thereby allowing for two independent channels of charge generation. The charge-generation process is followed by the recombination of interfacial charge transfer states that takes place on the subnanosecond time scale as revealed by time-resolved photoluminescence and nongeminate recombination as follows from the OSC performance. Our findings demonstrate the potential of TPA-DCV-based molecules as donor materials for both solution-processed and vacuum-deposited OSCs. (Figure Presented). © 2017 American Chemical Society.

Authors with CRIS profile

Jie Min Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

Involved external institutions

Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS) RU Russian Federation (RU) University of Groningen / Rijksuniversiteit Groningen NL Netherlands (NL)

How to cite

APA:

Kozlov, O.V., Liu, X., Luponosov, Y.N., Solodukhin, A.N., Toropynina, V.Y., Min, J.,... Pshenichnikov, M.S. (2017). Triphenylamine-Based Push-Pull Molecule for Photovoltaic Applications: From Synthesis to Ultrafast Device Photophysics. Journal of Physical Chemistry C, 121(12), 6424-6435. https://doi.org/10.1021/acs.jpcc.6b12068

MLA:

Kozlov, Oleg V., et al. "Triphenylamine-Based Push-Pull Molecule for Photovoltaic Applications: From Synthesis to Ultrafast Device Photophysics." Journal of Physical Chemistry C 121.12 (2017): 6424-6435.

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