Low-Bandgap DPP-Based Quinoxaline with Extended EQE and Low Energy Loss for Efficient Polymer Solar Cells

被引：0
作者：
Muhammad Naeem Shah
Yatao Yang
Muhammad Sohail
Srinivasa Rao Pathipati
Xiaofang Pan
机构：
[1] Shenzhen University,Department of Information Engineering
[2] Vignan’s Foundation for Science,Division of Physics, Department of Science and Humanities
[3] Technology and Research,undefined
来源：
Journal of Electronic Materials | 2021年 / 50卷
关键词：
Polymer solar cells; low voltage loss; quinoxaline; diketopyrrolopyrrole; low bandgap; wide absorption; electron-withdrawing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, we have designed and synthesized a low-bandgap polymer, DPP-Qx, using quinoxaline (Qx), a non-alkylated weak acceptor, with diketopyrrolopyrrole (DPP) as an electron donor. The incorporation of Qx into DPP leads to the highest occupied molecular orbital level at −5.1 eV with a narrow optical bandgap (1.25 eV). The synthesized polymer is utilized in photovoltaics, and the photovoltaic properties are studied. This DPP-Qx with fullerene acceptors in polymer solar cells (PSCs) exhibits efficiency of 3.26%. Moreover, a minimum energy loss of 0.57 eV along with high extended external quantum efficiency is achieved with the DPP-Qx electron donor. The thermal, electrical and optical properties, energy levels and hole mobility of the synthesized polymer are studied and discussed.
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页码：4488 / 4496
页数：8
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