Star-shaped small molecular donors based on a Zn-Porphyrin core and DPP arms via different linkers for organic solar cells

被引：17

作者：

Gao, Xuyu ^{[1
,2
]}

Wu, Yijing ^{[1
,2
]}

Song, Xiaochen ^{[1
,2
]}

Tao, Xianwang ^{[1
,2
]}

He, Yinming ^{[1
,2
]}

Yang, Tianjian ^{[1
,2
]}

Yu, Ruitao ^{[1
,2
]}

Li, Zijing ^{[1
,2
]}

Tao, Youtian ^{[1
]}

机构：

[1] Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect, 30 South Puzhu Rd, Nanjing 211816, Peoples R China

[2] Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Inst Adv Mat, 30 South Puzhu Rd, Nanjing 211816, Peoples R China

来源：

DYES AND PIGMENTS | 2021年 / 188卷

基金：

中国国家自然科学基金;

关键词：

Small-molecule donor; Star-shaped molecule; -linkage; Spatial configuration; Organic solar cells; NON-FULLERENE ACCEPTOR; TERPOLYMER ACCEPTORS; PERFORMANCE; EFFICIENT; COMPLEX; PHOTOVOLTAICS; BEARING; LIGAND; DYE;

D O I：

10.1016/j.dyepig.2021.109216

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Star-shaped porphyrin-based small-molecule donors (SMDs) with all four-directional substitution have been rarely reported. Herein, we designed and synthesized two SMDs, namely ZnP-4PhDPP and ZnP-4ThDPP, by employing zinc porphyrin as the core, thiophene-capped diketopyrrolopyrrole (DPP) as the four conjugated arms via a phenyl or thienyl linking bridge. The varied linker resulted in differences in absorption, energy level and molecular geometry. Blended with Y6 as acceptor, all-small-molecule devices achieved power conversion efficiency (PCE) of 6.86% and 6.93% for ZnP-4PhDPP and ZnP-4ThDPP, upon different device post-treatment conditions, respectively. The more orthogonal spatial configuration of ZnP-4ThDPP was favorable for constructing additional charge pathways, which was in accord with the results from photoluminescence quenching efficiency, charge transport ability and thickness sensitivity evaluation. The results in this work enriched the category of star-shaped porphyrin-derivatives and might afford guidelines into the structure-property correlation of various linkers-based small-molecule photovoltaic materials.

引用

页数：8

共 59 条

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