A Wide Bandgap Polymer with Strong Π–Π Interaction for Efficient Fullerene-Free Polymer Solar Cells

Huifeng Yao, Runnan Yu, Tae Joo Shin, Hao Zhang, Shaoqing Zhang, Bomee Jang, Mohammad Afsar Uddin, Han Young Woo, Jianhui Hou

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

A novel wide-bandgap polymer donor PBDTS-DTBTO, which shows an optical bandgap of 1.76 eV and a strong Π–Π interaction feature. Power conversion efficiency reached over 9% in the fullerene-free polymer solar cells (PSC) device By using a low-bandgap acceptor ITIC, indicating complementary absoprtion spectra for the donor and acceptor are of great importance for achieving a highly efficient fullerene-free PSC device. Additionally, the PSC devices fabricated by PBDTS-DTBTO:ITIC showed relatively small sensitivity to variations of the active layer thickness, and PCE equal to 8% could be achieved when the active layer thicknesses range from 50 to 200 nm, suggesting it is a promising candidate for further practical production study of fullerene-free PSC.

Original languageEnglish
JournalAdvanced Energy Materials
Volume6
Issue number15
DOIs
Publication statusPublished - 2016 Aug 10

    Fingerprint

Keywords

  • active layer thickness
  • complementary absorption
  • polymer solar cells
  • strong π–π interaction
  • wide bandgap polymers

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this