Issue 72, 2021

Design of ultra-high luminescent polymers for organic photovoltaic cells with low energy loss

Abstract

Here, new polymers named PBTT-Cn (n = 3, 4, or 5) have been designed based on carboxylate-functionalized thieno[3,2-b]thiophene units. The electroluminescence external quantum efficiencies (EQEEL) of pristine PBTT-C4 and C5 films are over 1 × 10−2, which are among the highest results for OPV materials. Through combination with BTP-eC9, the PBTT-C4-based film showed a high EQEEL of 6 × 10−4 and the Vnon-radloss is 0.19 eV. As a result, a high open-circuit voltage of 0.89 V and a satisfactory PCE of 15% were recorded in the PBTT-C4-based OPV cells.

Graphical abstract: Design of ultra-high luminescent polymers for organic photovoltaic cells with low energy loss

Supplementary files

Article information

Article type
Communication
Submitted
26 máj 2021
Accepted
12 aug 2021
First published
12 aug 2021

Chem. Commun., 2021,57, 9132-9135

Design of ultra-high luminescent polymers for organic photovoltaic cells with low energy loss

J. Wang, L. Ma, Y. W. Lee, H. Yao, Y. Xu, S. Zhang, H. Y. Woo and J. Hou, Chem. Commun., 2021, 57, 9132 DOI: 10.1039/D1CC02706A

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