Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells

Jianya Chen; Zhaozhao Bi; Xianbin Xu; Qianqian Zhang; Shengchun Yang; Shengwei Guo; Hongping Yan; Wei You; Wei Ma

doi:10.1002/advs.201801560

Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells

Jianya Chen
, Zhaozhao Bi
, Xianbin Xu
, Qianqian Zhang
, Shengchun Yang
, Shengwei Guo
, Hongping Yan
, Wei You
, Wei Ma

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The power conversion efficiency of polymer solar cells (PSCs) is strongly affected by active layer morphology. Here, two solvent additives (ODT: octance-1,8-dithiol; DIO: 1,8-diiodooctane) are used to optimize the bulk heterojunction morphology of FTAZ:ITIC-Th based PSCs and ≈11% efficiency is obtained, which is 10% higher than the untreated device. Based on the morphological characterizations, the influence of binary solvent additives on manipulating molecular packing and phase separation of blend films is successfully revealed. More importantly, in situ grazing incidence wide-angle X-ray scattering characterization is adopted to explore the crucial role played by these two solvent additives at different stages of the film-forming process, that is, ODT influences the initial stage of the film-forming process, while DIO later establishes the ultimate photoactive film formation. Due to the impacts of two additives at different film processing stages, an optimal ratio of ODT:DIO (0.375%:0.125%) is obtained, which helps in realizing the optimized morphology.

Original language	English
Article number	1801560
Journal	Advanced Science
Volume	6
Issue number	6
DOIs	https://doi.org/10.1002/advs.201801560
State	Published - 20 Mar 2019

Keywords

binary solvent additives
in situ characterization
kinetics
morphology
polymer solar cells

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10.1002/advs.201801560

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@article{1441386c467b4470aaedc36a5b1cedca,

title = "Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells",

abstract = "The power conversion efficiency of polymer solar cells (PSCs) is strongly affected by active layer morphology. Here, two solvent additives (ODT: octance-1,8-dithiol; DIO: 1,8-diiodooctane) are used to optimize the bulk heterojunction morphology of FTAZ:ITIC-Th based PSCs and ≈11\% efficiency is obtained, which is 10\% higher than the untreated device. Based on the morphological characterizations, the influence of binary solvent additives on manipulating molecular packing and phase separation of blend films is successfully revealed. More importantly, in situ grazing incidence wide-angle X-ray scattering characterization is adopted to explore the crucial role played by these two solvent additives at different stages of the film-forming process, that is, ODT influences the initial stage of the film-forming process, while DIO later establishes the ultimate photoactive film formation. Due to the impacts of two additives at different film processing stages, an optimal ratio of ODT:DIO (0.375\%:0.125\%) is obtained, which helps in realizing the optimized morphology.",

keywords = "binary solvent additives, in situ characterization, kinetics, morphology, polymer solar cells",

author = "Jianya Chen and Zhaozhao Bi and Xianbin Xu and Qianqian Zhang and Shengchun Yang and Shengwei Guo and Hongping Yan and Wei You and Wei Ma",

note = "Publisher Copyright: {\textcopyright} 2019 The Authors. Published by WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

month = mar,

day = "20",

doi = "10.1002/advs.201801560",

language = "英语",

volume = "6",

journal = "Advanced Science",

issn = "2198-3844",

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TY - JOUR

T1 - Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells

AU - Chen, Jianya

AU - Bi, Zhaozhao

AU - Xu, Xianbin

AU - Zhang, Qianqian

AU - Yang, Shengchun

AU - Guo, Shengwei

AU - Yan, Hongping

AU - You, Wei

AU - Ma, Wei

PY - 2019/3/20

Y1 - 2019/3/20

N2 - The power conversion efficiency of polymer solar cells (PSCs) is strongly affected by active layer morphology. Here, two solvent additives (ODT: octance-1,8-dithiol; DIO: 1,8-diiodooctane) are used to optimize the bulk heterojunction morphology of FTAZ:ITIC-Th based PSCs and ≈11% efficiency is obtained, which is 10% higher than the untreated device. Based on the morphological characterizations, the influence of binary solvent additives on manipulating molecular packing and phase separation of blend films is successfully revealed. More importantly, in situ grazing incidence wide-angle X-ray scattering characterization is adopted to explore the crucial role played by these two solvent additives at different stages of the film-forming process, that is, ODT influences the initial stage of the film-forming process, while DIO later establishes the ultimate photoactive film formation. Due to the impacts of two additives at different film processing stages, an optimal ratio of ODT:DIO (0.375%:0.125%) is obtained, which helps in realizing the optimized morphology.

AB - The power conversion efficiency of polymer solar cells (PSCs) is strongly affected by active layer morphology. Here, two solvent additives (ODT: octance-1,8-dithiol; DIO: 1,8-diiodooctane) are used to optimize the bulk heterojunction morphology of FTAZ:ITIC-Th based PSCs and ≈11% efficiency is obtained, which is 10% higher than the untreated device. Based on the morphological characterizations, the influence of binary solvent additives on manipulating molecular packing and phase separation of blend films is successfully revealed. More importantly, in situ grazing incidence wide-angle X-ray scattering characterization is adopted to explore the crucial role played by these two solvent additives at different stages of the film-forming process, that is, ODT influences the initial stage of the film-forming process, while DIO later establishes the ultimate photoactive film formation. Due to the impacts of two additives at different film processing stages, an optimal ratio of ODT:DIO (0.375%:0.125%) is obtained, which helps in realizing the optimized morphology.

KW - binary solvent additives

KW - in situ characterization

KW - kinetics

KW - morphology

KW - polymer solar cells

UR - https://www.scopus.com/pages/publications/85060756334

U2 - 10.1002/advs.201801560

DO - 10.1002/advs.201801560

M3 - 文章

AN - SCOPUS:85060756334

SN - 2198-3844

VL - 6

JO - Advanced Science

JF - Advanced Science

IS - 6

M1 - 1801560

ER -

Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells

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Keywords

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