Morphological Control of Donor/Acceptor Interfaces in All-Polymer Solar Cells Using a Pentafluorobenzene-Based Additive

被引：47

作者：

Kim, Hong Il ^{[1
]}

Kim, Minjun ^{[1
]}

Park, Cheol Woong ^{[1
]}

Kim, Hae Un ^{[1
]}

Lee, Han-Koo ^{[2
]}

Park, Taiho ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, 77 Cheongam Ro, Pohang 37673, Gyeongbuk, South Korea

[2] Pohang Accelerator Lab, 80 Jigokro 127 Beongil, Pohang 37673, Gyeongbuk, South Korea

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 16期

基金：

新加坡国家研究基金会;

关键词：

MOLECULAR-WEIGHT; PERFORMANCE; EFFICIENCY; BLEND; ACCEPTOR; AGGREGATION; COPOLYMER; DONOR;

D O I：

10.1021/acs.chemmater.7b01718

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：

We report a pentafluorobenzene-based additive (FPE) to control the donor/acceptor (D/A) interfacial morphology via quadrupolar electrostatic interactions between donor and acceptor polymers in all-polymer solar cells (allPSCs). The morphology changes are investigated using a combination of atomic force microscopy, grazing incidence wide-angle X-ray scattering, and near-edge X-ray absorption fine-structure spectroscopy. Unlike a conventional solvent additive, such as 1,8-diiodooctane, a bicontinuous interpenetrating morphology without large-scale phase separation and an enhanced pi-pi stacking with face-on orientation are found in the FPE processed blended films. These morphology changes improve the charge carrier extraction and charge transport between D/A interfaces to achieve an increase in the photovoltaic performance of all-PSCs.

引用

页码：6793 / 6798

页数：6

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