A novel small molecule based on naphtho[1,2-b:5,6-b′]dithiophene benefits both fullerene and non-fullerene solar cells†,Materials Chemistry Frontiers

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A novel small molecule based on naphtho[1,2-b:5,6-b′]dithiophene benefits both fullerene and non-fullerene solar cells†
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2017-11-13 00:00:00 , DOI: 10.1039/c7qm00397h
Huan Li _{1,

2,

3,

4,

5} , Jin Fang _{1,

2,

3,

4,

5} , Jianqi Zhang _{1,

2,

3,

4,

5} , Ruimin Zhou _{1,

2,

3,

4,

5} , Qiong Wu _{1,

2,

3,

4,

5} , Dan Deng _{1,

2,

3,

4,

5} , Muhammad Abdullah Adil _{1,

2,

3,

4,

5} , Kun Lu _{1,

2,

3,

4,

5} , Xuefeng Guo _{5,

6,

7,

8} , Zhixiang Wei _{1,

2,

3,

4,

5}

Affiliation

Small molecule solar cells have made great progress in recent years. Herein, we synthesized a novel small molecule donor NDTR with naphtho[1,2-b:5,6-b′]dithiophene (NDT) units as the building blocks. NDTR exhibited complementary absorption for both fullerene acceptor PC₇₁BM and non-fullerene acceptor IDIC. Meanwhile, NDTR possessed a HOMO energy level of −5.23 eV and a LUMO energy level of −3.50 eV, which matched well with these two kinds of acceptors. When mixed with PC₇₁BM, a high power conversion efficiency (PCE) of 7.75% was obtained, while the NDTR:IDIC system presented a PCE of 6.60%. The results indicated that NDTR was an all-round small molecule donor which can work well in both fullerene and non-fullerene systems.

中文翻译：

一种基于萘并[1,2- b：5,6- b ']二噻吩的新型小分子，对富勒烯和非富勒烯太阳能电池都有益†

近年来，小分子太阳能电池取得了长足的进步。在这里，我们合成了一种新型的小分子供体NDTR，其以萘并[1,2- b：5,6- b ']二噻吩（NDT）单元为结构单元。NDTR对富勒烯受体PC ₇₁ BM和非富勒烯受体IDIC均表现出互补吸收。同时，NDTR具有-5.23 eV的HOMO能级和-3.50 eV的LUMO能级，与这两种受体非常匹配。当与PC ₇₁ BM混合使用时，可实现7.75％的高功率转换效率（PCE），而NDTR：IDIC系统的PCE为6.60％。结果表明，NDTR是一种全方位的小分子供体，在富勒烯和非富勒烯体系中均可很好地发挥作用。

更新日期：2017-11-13

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