Journal
ORGANIC ELECTRONICS
Volume 89, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2020.106051
Keywords
Polymer acceptor; All-polymer solar cells; Direct (hetero)arylation reaction; poly(2,2 '-(2,5-difluoro-1,4-phenylene); dithiophene-alt-naphthalene diimide); Weak donor-strong acceptor
Funding
- National Natural Science Foundation of China (NSFC) [21704015, 51803144]
- National Natural Science Foundation of Fujian [2018J01679]
- Natural Science Foundation of Jiangsu Province of China [BK20170337]
- 111 projects
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A weak donor-strong acceptor polymer acceptor PNB2F was designed and synthesized through a two-step direct (hetero)arylation reaction and applied in all-polymer solar cells, achieving a power conversion efficiency of 4.49%. The results suggest that direct (hetero)arylation reaction is a promising method for efficient and cost-effective synthesis of polymer acceptors.
The weak donor-strong acceptor polymer acceptors for all-polymer solar cells (all-PSCs) have gained much less attention compared with the typical donor-strong acceptor counterparts. Direct (hetero)arylation polymerization reaction is a rising synthetic method, although most of the naphthalene diimide polymer photovoltaic acceptors have been prepared by classic Stille polymerization. A weak donor-strong acceptor polymer acceptor PNB2F has been successfully designed and synthesized by the two-step direct (hetero)arylation reaction and further applied in all-PSCs. The all-PSC device based on PNB2F and electron-donating polymer PBDB-T gained a PCE of 4.49%. The results demonstrate that direct (hetero)arylation reaction is a promising tool for building efficient polymer acceptors with convenient and low-cost synthesis ideas.
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