Stable P3HT: amorphous non-fullerene solar cells with a high open-circuit voltage of 1 V and efficiency of 4%

被引：11

作者：

Lee, HyunKyung ^{[1
]}

Oh, Sora ^{[1
,3
]}

Song, Chang Eun ^{[2
,3
]}

Lee, Hang Ken ^{[2
]}

Lee, Sang Kyu ^{[1
,3
]}

Shin, Won Suk ^{[1
,3
,4
]}

So, Won-Wook ^{[2
]}

Moon, Sang-Jin ^{[1
,3
]}

Lee, Jong-Cheol ^{[1
,3
]}

机构：

[1] KRICT, Adv Mat Div, 141 Gajeong Ro, Yuseong 34114, Daejeon, South Korea

[2] KRICT, Energy Mat Res Ctr, 141 Gajeong Ro, Yuseong 34114, Daejeon, South Korea

[3] UST, Adv Mat & Chem Engn, Yuseong 34113, Daejeon, South Korea

[4] KU, Dept Adv Mat Chem, Div Display & Semicond Phys, KRICT Collaborat Res Ctr, 2511 Sejong Ro, Sejong 30019, South Korea

来源：

RSC ADVANCES | 2019年 / 9卷 / 36期

基金：

新加坡国家研究基金会;

关键词：

IR SENSITIZATION; 3D STRUCTURE; POLYMER; ACCEPTOR; PERFORMANCE; RECOMBINATION; GENERATION; TRANSPORT; ENERGY;

D O I：

10.1039/c9ra03188j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A non-fullerene small molecule acceptor, SF-HR composed of 3D-shaped spirobifluorene and hexyl rhodanine, was synthesized for use in bulk heterojunction organic solar cells (OSCs). It possesses harmonious molecular aggregation between the donor and acceptor, due to the interesting diagonal molecular shape of SF-HR. Furthermore, the energy level of SF-HR matches well with that of the donor polymer, poly(3-hexyl thiophene) (P3HT) in this system which can affect efficient charge transfer and transport properties. As a result, OSCs made from a P3HT:SF-HR photoactive layer exhibited a power conversion efficiency rate of 4.01% with a high V-OC of 1.00 V, a J(SC) value of 8.23 mA cm(-2), and a FF value of 49%. Moreover, the P3HT:SF-HR film showed superior thermal and photo-stability to P3HT:PC71BM. These results indicate that SF-HR is specialized as a non-fullerene acceptor for use in high-performance OSCs.

引用

页码：20733 / 20741

页数：9

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