Fluorination Triggered New Small Molecule Donor Materials for Efficient As-Cast Organic Solar Cells

Yuting Yang; Kai Wang; Gongqiang Li; Xueqin Ran; Xin Song; Nicola Gasparini; Qian Qian Zhang; Xue Lai; Xiao Guo; Fei Meng; Mengzhen Du; Wei Huang; Derya Baran

doi:10.1002/smll.201801542

Fluorination Triggered New Small Molecule Donor Materials for Efficient As-Cast Organic Solar Cells

Yuting Yang, Kai Wang, Gongqiang Li^*, Xueqin Ran, Xin Song, Nicola Gasparini, Qian Qian Zhang, Xue Lai, Xiao Guo, Fei Meng, Mengzhen Du, Wei Huang, Derya Baran

^*Corresponding author for this work

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

19 Scopus citations

Abstract

Solution-processable small molecules (SMs) have attracted intense attention due to their definite molecular structures, less batch-to-batch variation, and easier structure control. Herein, two new SM donors based on substituted isatin unit (DI3T, DI3T-2F) are synthesized and applied as electron donors with the mixture of PC₇₁BM to construct organic photovoltaics. As a result, 5,6-difluoro isatin derivative (DI3T-2F) obtains a power conversion efficiency of 7.80% by a simple solution spin-coating fabrication process without any additives, solvent, or thermal annealing process. More intuitively, due to stronger intermolecular interaction and higher hole mobility after the incorporation of fluorine atoms in end units, the devices present good tolerance to active layer thickness. The results indicate that DI3T-2F shows promising potential for large-scale printing processes and flexible application of efficient small molecule organic solar cells.

Original language	English (US)
Article number	1801542
Journal	Small
Volume	14
Issue number	34
DOIs	https://doi.org/10.1002/smll.201801542
State	Published - Aug 23 2018

Bibliographical note

Funding Information:
This work was financially supported by the National Key R&D Program of China (2017YFA0204704), the National Science Foundation of China (51773091, 61604069), Natural Science Foundation of Jiangsu Province (BK20171465, BK20150064), and the High Performance Computing Center of Nanjing Tech University supporting the computational resources; X.S. N.G., and D.B. acknowledge King Abdullah University of Science and Technology (KAUST) Solar Center Competitive Fund (CCF) for financial support. The authors thank the beamline BL16B1 (Shanghai Synchrotron Radiation Facility) for providing the assistance.

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

as-cast devices
fluorination
isatin (1H-indole-2,3-dione)
organic solar cells
small molecule donors

ASJC Scopus subject areas

Biotechnology
Chemistry(all)
Biomaterials
Materials Science(all)

Access to Document

10.1002/smll.201801542

Cite this

@article{5b0f969017e84b71ac97435d20e03de5,

title = "Fluorination Triggered New Small Molecule Donor Materials for Efficient As-Cast Organic Solar Cells",

abstract = "Solution-processable small molecules (SMs) have attracted intense attention due to their definite molecular structures, less batch-to-batch variation, and easier structure control. Herein, two new SM donors based on substituted isatin unit (DI3T, DI3T-2F) are synthesized and applied as electron donors with the mixture of PC71BM to construct organic photovoltaics. As a result, 5,6-difluoro isatin derivative (DI3T-2F) obtains a power conversion efficiency of 7.80% by a simple solution spin-coating fabrication process without any additives, solvent, or thermal annealing process. More intuitively, due to stronger intermolecular interaction and higher hole mobility after the incorporation of fluorine atoms in end units, the devices present good tolerance to active layer thickness. The results indicate that DI3T-2F shows promising potential for large-scale printing processes and flexible application of efficient small molecule organic solar cells.",

keywords = "as-cast devices, fluorination, isatin (1H-indole-2,3-dione), organic solar cells, small molecule donors",

author = "Yuting Yang and Kai Wang and Gongqiang Li and Xueqin Ran and Xin Song and Nicola Gasparini and Zhang, {Qian Qian} and Xue Lai and Xiao Guo and Fei Meng and Mengzhen Du and Wei Huang and Derya Baran",

note = "Funding Information: This work was financially supported by the National Key R&D Program of China (2017YFA0204704), the National Science Foundation of China (51773091, 61604069), Natural Science Foundation of Jiangsu Province (BK20171465, BK20150064), and the High Performance Computing Center of Nanjing Tech University supporting the computational resources; X.S. N.G., and D.B. acknowledge King Abdullah University of Science and Technology (KAUST) Solar Center Competitive Fund (CCF) for financial support. The authors thank the beamline BL16B1 (Shanghai Synchrotron Radiation Facility) for providing the assistance. Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = aug,

day = "23",

doi = "10.1002/smll.201801542",

language = "English (US)",

volume = "14",

journal = "Small",

issn = "1613-6810",

publisher = "Wiley",

number = "34",

}

TY - JOUR

T1 - Fluorination Triggered New Small Molecule Donor Materials for Efficient As-Cast Organic Solar Cells

AU - Yang, Yuting

AU - Wang, Kai

AU - Li, Gongqiang

AU - Ran, Xueqin

AU - Song, Xin

AU - Gasparini, Nicola

AU - Zhang, Qian Qian

AU - Lai, Xue

AU - Guo, Xiao

AU - Meng, Fei

AU - Du, Mengzhen

AU - Huang, Wei

AU - Baran, Derya

N1 - Funding Information: This work was financially supported by the National Key R&D Program of China (2017YFA0204704), the National Science Foundation of China (51773091, 61604069), Natural Science Foundation of Jiangsu Province (BK20171465, BK20150064), and the High Performance Computing Center of Nanjing Tech University supporting the computational resources; X.S. N.G., and D.B. acknowledge King Abdullah University of Science and Technology (KAUST) Solar Center Competitive Fund (CCF) for financial support. The authors thank the beamline BL16B1 (Shanghai Synchrotron Radiation Facility) for providing the assistance. Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/8/23

Y1 - 2018/8/23

N2 - Solution-processable small molecules (SMs) have attracted intense attention due to their definite molecular structures, less batch-to-batch variation, and easier structure control. Herein, two new SM donors based on substituted isatin unit (DI3T, DI3T-2F) are synthesized and applied as electron donors with the mixture of PC71BM to construct organic photovoltaics. As a result, 5,6-difluoro isatin derivative (DI3T-2F) obtains a power conversion efficiency of 7.80% by a simple solution spin-coating fabrication process without any additives, solvent, or thermal annealing process. More intuitively, due to stronger intermolecular interaction and higher hole mobility after the incorporation of fluorine atoms in end units, the devices present good tolerance to active layer thickness. The results indicate that DI3T-2F shows promising potential for large-scale printing processes and flexible application of efficient small molecule organic solar cells.

AB - Solution-processable small molecules (SMs) have attracted intense attention due to their definite molecular structures, less batch-to-batch variation, and easier structure control. Herein, two new SM donors based on substituted isatin unit (DI3T, DI3T-2F) are synthesized and applied as electron donors with the mixture of PC71BM to construct organic photovoltaics. As a result, 5,6-difluoro isatin derivative (DI3T-2F) obtains a power conversion efficiency of 7.80% by a simple solution spin-coating fabrication process without any additives, solvent, or thermal annealing process. More intuitively, due to stronger intermolecular interaction and higher hole mobility after the incorporation of fluorine atoms in end units, the devices present good tolerance to active layer thickness. The results indicate that DI3T-2F shows promising potential for large-scale printing processes and flexible application of efficient small molecule organic solar cells.

KW - as-cast devices

KW - fluorination

KW - isatin (1H-indole-2,3-dione)

KW - organic solar cells

KW - small molecule donors

UR - http://www.scopus.com/inward/record.url?scp=85051075085&partnerID=8YFLogxK

U2 - 10.1002/smll.201801542

DO - 10.1002/smll.201801542

M3 - Article

C2 - 30058231

AN - SCOPUS:85051075085

SN - 1613-6810

VL - 14

JO - Small

JF - Small

IS - 34

M1 - 1801542

ER -

Fluorination Triggered New Small Molecule Donor Materials for Efficient As-Cast Organic Solar Cells

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this