New Donor–Acceptor Random Terpolymers with Wide Absorption Spectra of 300–1000 nm for Photovoltaic Applications

Autor: I. O. Konstantinov, I. E. Ostapov, Alexei R. Khokhlov, Gulshan Sharma, Elena E. Makhaeva, Yingping Zou, Mukhamed L. Keshtov, S. A. Kuklin
Rok vydání: 2020
Předmět:
Zdroj: Doklady Physical Chemistry. 495:196-200
ISSN: 1608-3121
0012-5016
DOI: 10.1134/s0012501620120040
Popis: The development of conjugated polymers with wide absorption spectra is imperative to achieve high efficiency in polymer solar cells (PSCs), since most of these polymers usually absorb only a limited range of the solar spectrum. Random terpolymers consisting of three blocks (one electron-donor and two electron-acceptor blocks) are promising p-type polymers for PSCs, because the inclusion of a third block in the polymer macromolecules provides a synergistic effect of physical properties, such as absorption capacity, charge transfer, HOMO/LUMO energy levels, and photovoltaic characteristics. In this regard, we have developed and synthesized random terpolymers consisting of two different chromophores (DPP and BFCTP) with complementary absorption spectra as co-acceptor blocks in conjugated donor–acceptor (D–A) copolymers. Random copolymers exhibit both broad absorption and low HOMO levels favoring short-circuit current and idle voltage in PSCs. It is expected that new terpolymers consisting of one electron-donor unit and two electron-acceptor moieties will make a significant contribution to the development of highly efficient PSCs. It is expected that new ternary copolymers consisting of one electron-donor unit and two electron-acceptor fragments will make a significant contribution to the development of high-performance PSСs.
Databáze: OpenAIRE
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