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

被引：18

作者：

Zong, Xuanlai ^{[1
]}

Dahiya, Hemraj ^{[2
,5
]}

Song, Yuting ^{[1
]}

Liang, Xu ^{[4
]}

Pandey, Sarvesh Kumar ^{[3
]}

Xu, Haijun ^{[1
]}

Sharma, Ganesh D. ^{[2
,5
]}

机构：

[1] Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China

[2] Dept Phys, LNM Informat Technol, Jaipur 302031, Rajasthan, India

[3] Indian Inst Sci, Dept Inorgan & Phys Chem, Bengaluru 560012, Karnataka, India

[4] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[5] Dept Elect & Commun Engn, LNM Informat Technol, Jaipur 302031, Rajasthan, India

来源：

ACS APPLIED ENERGY MATERIALS | 2022年 / 5卷 / 12期

关键词：

organic solar cells; BODIPY; perylene diimide; nonfullerene acceptors; star-shaped structure; SMALL-MOLECULE ACCEPTORS; HIGH-PERFORMANCE; RATIONAL DESIGN; RING-FUSION; PROGRESS;

D O I：

10.1021/acsaem.2c03200

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：15624 / 15637

页数：14

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