Loading…

D-A Copolymers Based on a Pentacyclic Acceptor Unit and a 3,3′-Difluoro-2,2′-bithiophene for Solar Cells

A D-A copolymer, P2FBTTPTI, was developed by copolymerizing a pentacyclic acceptor unit, thieno[2′,3′:5,6]pyrido[3,4-g]thieno[3,2-c]isoquinoline-5,11(4 H,10 H)-dione(TPTI), with 3,3′-difluoro-2,2′-bithiophene(2 FBT). P2 FBTTPTI possessed a low highest occupied molecular orbital(HOMO) energy level(-5...

Full description

Saved in:
Bibliographic Details
Published in:Chinese journal of polymer science 2017-12, Vol.35 (12), p.1457-1462
Main Authors: Cao, Jia-min, Qian, Liu, He, Dan, Xiao, Zuo, Ding, Li-ming
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A D-A copolymer, P2FBTTPTI, was developed by copolymerizing a pentacyclic acceptor unit, thieno[2′,3′:5,6]pyrido[3,4-g]thieno[3,2-c]isoquinoline-5,11(4 H,10 H)-dione(TPTI), with 3,3′-difluoro-2,2′-bithiophene(2 FBT). P2 FBTTPTI possessed a low highest occupied molecular orbital(HOMO) energy level(-5.50 e V) and a good hole mobility(4.14 × 10^-4 cm^2·V^-1·s^-1). P2FBTTPTI:PC_(71)BM solar cells gave a decent power conversion efficiency(PCE) of 7.64% and a high open-circuit voltage(Voc) of 0.95 V.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-017-1996-4