Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells
Abstract Thick‐film all‐small‐molecule (ASM) organic solar cells (OSCs) are preferred for large‐scale fabrication with printing techniques due to the distinct advantages of monodispersion, easy purification, and negligible batch‐to‐batch variation. However, ASM OSCs are typically constrained by the...
Main Authors: | , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Wiley
2019-11-01
|
Series: | Advanced Science |
Subjects: | |
Online Access: | https://doi.org/10.1002/advs.201901613 |
id |
doaj-562f98b2cd8747338ed8277460575eb3 |
---|---|
record_format |
Article |
spelling |
doaj-562f98b2cd8747338ed8277460575eb32020-11-25T01:38:40ZengWileyAdvanced Science2198-38442019-11-01621n/an/a10.1002/advs.201901613Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar CellsHua Tang0Tongle Xu1Cenqi Yan2Jie Gao3Hang Yin4Jie Lv5Ranbir Singh6Manish Kumar7Tainan Duan8Zhipeng Kan9Shirong Lu10Gang Li11Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaDepartment of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Hum Kowloon Hong Kong ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaDepartment of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Hum Kowloon Hong Kong ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaDepartment of Energy & Materials Engineering Dongguk University Seoul 04620 Republic of KoreaPohang Accelerator Laboratory Pohang University of Science and Technology Pohang 37673 Republic of KoreaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 ChinaDepartment of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Hum Kowloon Hong Kong ChinaAbstract Thick‐film all‐small‐molecule (ASM) organic solar cells (OSCs) are preferred for large‐scale fabrication with printing techniques due to the distinct advantages of monodispersion, easy purification, and negligible batch‐to‐batch variation. However, ASM OSCs are typically constrained by the morphology aspect to achieve high efficiency and maintain thick film simultaneously. Specifically, synchronously manipulating crystallinity, domain size, and phase segregation to a suitable level are extremely challenging. Herein, a derivative of benzodithiophene terthiophene rhodanine (BTR) (a successful small molecule donor for thick‐film OSCs), namely, BTR‐OH, is synthesized with similar chemical structure and absorption but less crystallinity relative to BTR, and is employed as a third component to construct BTR:BTR‐OH:PC71BM ternary devices. The power conversion efficiency (PCE) of 10.14% and fill factor (FF) of 74.2% are successfully obtained in ≈300 nm OSC, which outperforms BTR:PC71BM (9.05% and 69.6%) and BTR‐OH:PC71BM (8.00% and 65.3%) counterparts, and stands among the top values for thick‐film ASM OSCs. The performance enhancement results from the enhanced absorption, suppressed bimolecular/trap–assisted recombination, improved charge extraction, optimized domain size, and suitable crystallinity. These findings demonstrate that the donor derivative featuring similar chemical structure but different crystallinity provides a promising third component guideline for high‐performance ternary ASM OSCs.https://doi.org/10.1002/advs.201901613morphologyorganic solar cellssmall moleculesstructural similaritythick films |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hua Tang Tongle Xu Cenqi Yan Jie Gao Hang Yin Jie Lv Ranbir Singh Manish Kumar Tainan Duan Zhipeng Kan Shirong Lu Gang Li |
spellingShingle |
Hua Tang Tongle Xu Cenqi Yan Jie Gao Hang Yin Jie Lv Ranbir Singh Manish Kumar Tainan Duan Zhipeng Kan Shirong Lu Gang Li Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells Advanced Science morphology organic solar cells small molecules structural similarity thick films |
author_facet |
Hua Tang Tongle Xu Cenqi Yan Jie Gao Hang Yin Jie Lv Ranbir Singh Manish Kumar Tainan Duan Zhipeng Kan Shirong Lu Gang Li |
author_sort |
Hua Tang |
title |
Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells |
title_short |
Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells |
title_full |
Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells |
title_fullStr |
Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells |
title_full_unstemmed |
Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells |
title_sort |
donor derivative incorporation: an effective strategy toward high performance all‐small‐molecule ternary organic solar cells |
publisher |
Wiley |
series |
Advanced Science |
issn |
2198-3844 |
publishDate |
2019-11-01 |
description |
Abstract Thick‐film all‐small‐molecule (ASM) organic solar cells (OSCs) are preferred for large‐scale fabrication with printing techniques due to the distinct advantages of monodispersion, easy purification, and negligible batch‐to‐batch variation. However, ASM OSCs are typically constrained by the morphology aspect to achieve high efficiency and maintain thick film simultaneously. Specifically, synchronously manipulating crystallinity, domain size, and phase segregation to a suitable level are extremely challenging. Herein, a derivative of benzodithiophene terthiophene rhodanine (BTR) (a successful small molecule donor for thick‐film OSCs), namely, BTR‐OH, is synthesized with similar chemical structure and absorption but less crystallinity relative to BTR, and is employed as a third component to construct BTR:BTR‐OH:PC71BM ternary devices. The power conversion efficiency (PCE) of 10.14% and fill factor (FF) of 74.2% are successfully obtained in ≈300 nm OSC, which outperforms BTR:PC71BM (9.05% and 69.6%) and BTR‐OH:PC71BM (8.00% and 65.3%) counterparts, and stands among the top values for thick‐film ASM OSCs. The performance enhancement results from the enhanced absorption, suppressed bimolecular/trap–assisted recombination, improved charge extraction, optimized domain size, and suitable crystallinity. These findings demonstrate that the donor derivative featuring similar chemical structure but different crystallinity provides a promising third component guideline for high‐performance ternary ASM OSCs. |
topic |
morphology organic solar cells small molecules structural similarity thick films |
url |
https://doi.org/10.1002/advs.201901613 |
work_keys_str_mv |
AT huatang donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT tonglexu donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT cenqiyan donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT jiegao donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT hangyin donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT jielv donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT ranbirsingh donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT manishkumar donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT tainanduan donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT zhipengkan donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT shironglu donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells AT gangli donorderivativeincorporationaneffectivestrategytowardhighperformanceallsmallmoleculeternaryorganicsolarcells |
_version_ |
1725052309840330752 |