A Synergetic Effect of Molecular Weight and Fluorine in All-Polymer Solar Cells with Enhanced Performance

被引：95

作者：

Chen, Shanshan ^{[1
]}

An, Yujin ^{[1
]}

Dutta, Gitish K. ^{[2
]}

Kim, Yiho ^{[1
]}

Zhang, Zhi-Guo ^{[3
]}

Li, Yongfang ^{[3
]}

Yang, Changduk ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Low Dimens Carbon Mat Ctr, Sch Energy & Chem Engn, Dept Energy Engn, 50 UNIST Gil, Ulsan 44919, South Korea

[2] Natl Inst Technol Meghalaya, Dept Chem, Shillong, Meghalaya, India

[3] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2017年 / 27卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

POWER CONVERSION EFFICIENCY; FACE-ON; ACCEPTOR; MORPHOLOGY; DONOR; RECOMBINATION; ORIENTATION; COPOLYMERS; CRYSTALLINITY; SUBSTITUENTS;

D O I：

10.1002/adfm.201603564

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A synergetic effect of molecular weight (M-n) and fluorine (F) on the performance of all-polymer solar cells (all-PSCs) is comprehensively investigated by tuning the M-n of the acceptor polymer poly((N, N'-bis(2-octyldodecyl)-naphthalene- 1,4,5,8-bis(dicarboximide)-2,6-diyl)-alt-5,5'-(2,2'-bithiophene)) (P(NDI2OD-T2)) and the F content of donor polymer poly(2,3-bis-(3-octyloxyphenyl) quinoxaline-5,8-dyl-alt-thiophene-2,5-diyl). Both M-n and F variations strongly influence the charge transport properties and morphology of the blend films, which have a significant impact on the photovoltaic performance of all-PSCs. In particular, the effectiveness of high M-n in increasing power conversion efficiency (PCE) can be greatly improved by the devices based on optimum F content, reaching a PCE of 7.31% from the best all-PSC combination. These findings enable us to further understand the working principles of all-PSCs with a view on achieving even higher power conversion efficiency in the future.

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页数：10

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