Alkynyl BODIPY-Core Bridged Perylene Diimide Star-Shaped Nonfullerene Acceptors for Efficient Polymer Solar Cells

Zong, X and Dahiya, H and Song, Y and Liang, X and Pandey, SK and Xu, H and Sharma, GD (2022) Alkynyl BODIPY-Core Bridged Perylene Diimide Star-Shaped Nonfullerene Acceptors for Efficient Polymer Solar Cells. In: ACS Applied Energy Materials, 5 (12). pp. 15624-15637.

PDF ACS_app_ene_ 5-12_15624–15637_2022.pdf - Published Version Restricted to Registered users only Download (9MB) | Request a copy

Abstract

Two new star-shaped perylene diimide (PDI)-based small-molecule acceptors denoted as BDP-3PDI and BDP-4PDI with BODIPY derivatives as the core and PDI units as peripheral groups were designed and successfully synthesized, and their photophysical and electrochemical properties were studied. When paired with a compatible D-A polymer donor P(BTT-DPP), the polymer solar cells based on the bulk heterojunction active layer attained power conversion efficiencies (PCEs) of about 10.97 and 13.94 for BDP-3PDI and BDP-4PDI, respectively. The higher value of PCE for BDP-4PDI is mainly owing to the enhanced values of the fill factor and short circuit current as compared to BDP-3PDI and related to the more balanced charge transport and blocked charge recombination owing to the appropriate phase separation in the P(BTT-DPP):BDP-4PDI active layer as compared to P(BTT-DPP):BDP-3PDI. © 2022 American Chemical Society.

Item Type:	Journal Article
Publication:	ACS Applied Energy Materials
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Keywords:	Conversion efficiency; Heterojunctions; Phase separation; Polycyclic aromatic hydrocarbons; Stars; Synthesis (chemical), Active Layer; Alkynyls; BODIPY; Nonfullerene acceptor; Perylene diimides; Perylenediimides; Power conversion efficiencies; Shaped structures; Star-shaped; Star-shaped structure, Organic solar cells
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	22 Jan 2023 06:57
Last Modified:	22 Jan 2023 06:57
URI:	https://eprints.iisc.ac.in/id/eprint/79231

Actions (login required)

View Item