Issue 14, 2023

A tetracyclic-bislactone-based copolymer donor for efficient semitransparent organic photovoltaics

Abstract

A copolymer donor PBDTTPTP based on a tetracyclic bislactone unit, thieno[2′,3′:5,6]pyrano[3,4-d]thieno[3,2-b]pyran-4,9-dione (TPTP), was developed. The single crystal structure of a TPTP derivative indicates the π-extended planar geometry of TPTP and its good coplanarity with the adjacent thiophene units. Thanks to the strong electron-withdrawing properties and good coplanarity of TPTP, the copolymer PBDTTPTP shows a deep HOMO level of −5.60 eV, a small optical bandgap of 1.65 eV and a good hole mobility of 6.57 × 10−4 cm2 V−1 s−1. These features make PBDTTPTP an efficient donor material for semitransparent organic photovoltaics (STOPVs). STOPVs based on PBDTTPTP and N3 gave a high light utilization efficiency of 4.38%, with a power conversion efficiency of 12.26% and an average visible light transmittance of 35.7%.

Graphical abstract: A tetracyclic-bislactone-based copolymer donor for efficient semitransparent organic photovoltaics

Supplementary files

Article information

Article type
Paper
Submitted
19 4 2023
Accepted
12 6 2023
First published
13 6 2023
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2023,4, 2991-2998

A tetracyclic-bislactone-based copolymer donor for efficient semitransparent organic photovoltaics

M. Li, T. An, Z. Ou, K. Jin, Z. Jin, K. Yan, H. Tian, W. Wang, S. Yang, G. Wang, Q. Song, Z. Xiao and L. Ding, Mater. Adv., 2023, 4, 2991 DOI: 10.1039/D3MA00179B

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