Employing PCBTDPP as an efficient donor polymer for high performance ternary polymer solar cells

Binrui Xu, Gopalan Saianand, V. A.L. Roy, Qiquan Qiao, Khan Mamun Reza, Shin Won Kang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A compatible low-bandgap donor polymer (poly[N-90-heptadecanyl-2,7carbazole-alt- 3,6-bis(thiophen-5-yl)-2,5-dioctyl-2,5-dihydropyrrolo[3,4]pyrrole-1,4-dione], PCBTDPP) was judicially introduced into the archetypal poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PC61BM) photoactive system to fabricate highly efficient ternary based bulk heterojunction polymer solar cells (PSCs). The PCBTDPP ternary-based PSC with optimal loading (0.2 wt.%) displayed outstanding performance with a champion power conversion efficiency (PCE) of 5.28% as compared to the PCE (4.67%) for P3HT:PC61BM-based PSC (reference). The improved PCE for PCBTDPP ternary-based PSC can be mainly attributed to the incorporation of PCBTDPP into P3HT:PC61BM that beneficially improved the optical, morphological, electronic, and photovoltaic (PV) performance. This work instills a rational strategy for identifying components (donor/acceptor (D/A) molecules) with complementary beneficial properties toward fabricating efficient ternary PSCs.

Original languageEnglish (US)
Article number1423
JournalPolymers
Volume11
Issue number9
DOIs
StatePublished - 2019
Externally publishedYes

Keywords

  • Low-bandgap
  • PCBTDPP
  • Polymer solar cells
  • Ternary

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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