Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells

Zhang, Hao; Wang, Xiaohui; Yang, Liyan; Zhang, Shaoqing; Zhang, Yun; He, Chang; Ma, Wei; Hou, Jianhui

doi:10.1002/adma.201703777

Title: Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells

Abstract

Abstract An all‐small‐molecule ternary solar cell is achieved with a power conversion efficiency of 10.48% by incorporating phenyl‐C ₇₁ ‐butyric‐acid‐methyl ester (PC ₇₁ BM) into a nonfullerene binary system. The addition of PC ₇₁ BM is found to modulate the film morphology by improving the domain purity and decreasing the domain size. This modulation facilitates charge generation and suppresses charge recombination, as manifested by the significantly enhanced short‐circuit current density and fill factor. The results correlate the domain characteristics with the device performance and offer new insight from the perspective of morphology modulation for constructing efficient ternary devices.

Authors:

^[1]; Wang, Xiaohui ^[2]; Yang, Liyan ^[1]; Zhang, Shaoqing ^[3]; Zhang, Yun ^[1];

^[1];

^[2];

^[1]

State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China, School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P. R. China
State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

Publication Date:: Fri Sep 29 00:00:00 EDT 2017

Sponsoring Org.:: USDOE

OSTI Identifier:: 1395600

Grant/Contract Number:: DE‐AC02‐05CH11231

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Advanced Materials

Additional Journal Information:: Journal Name: Advanced Materials Journal Volume: 29 Journal Issue: 42; Journal ID: ISSN 0935-9648

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: Germany

Language:: English

Citation Formats


                    Zhang, Hao, Wang, Xiaohui, Yang, Liyan, Zhang, Shaoqing, Zhang, Yun, He, Chang, Ma, Wei, and Hou, Jianhui. Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells.  Germany: N. p., 2017. 
Web.  doi:10.1002/adma.201703777.

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                    Zhang, Hao, Wang, Xiaohui, Yang, Liyan, Zhang, Shaoqing, Zhang, Yun, He, Chang, Ma, Wei, & Hou, Jianhui. Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells.  Germany.  https://doi.org/10.1002/adma.201703777

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                    Zhang, Hao, Wang, Xiaohui, Yang, Liyan, Zhang, Shaoqing, Zhang, Yun, He, Chang, Ma, Wei, and Hou, Jianhui. Fri .  
"Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells".  Germany.  https://doi.org/10.1002/adma.201703777.

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@article{osti_1395600,

  title        = {Improved Domain Size and Purity Enables Efficient All‐Small‐Molecule Ternary Solar Cells},

  author       = {Zhang, Hao and Wang, Xiaohui and Yang, Liyan and Zhang, Shaoqing and Zhang, Yun and He, Chang and Ma, Wei and Hou, Jianhui},

  abstractNote = {Abstract An all‐small‐molecule ternary solar cell is achieved with a power conversion efficiency of 10.48% by incorporating phenyl‐C 71 ‐butyric‐acid‐methyl ester (PC 71 BM) into a nonfullerene binary system. The addition of PC 71 BM is found to modulate the film morphology by improving the domain purity and decreasing the domain size. This modulation facilitates charge generation and suppresses charge recombination, as manifested by the significantly enhanced short‐circuit current density and fill factor. The results correlate the domain characteristics with the device performance and offer new insight from the perspective of morphology modulation for constructing efficient ternary devices.},

  doi          = {10.1002/adma.201703777},

  journal      = {Advanced Materials},

  number       = 42,

  volume       = 29,

  place        = {Germany},

  year         = {Fri Sep 29 00:00:00 EDT 2017},

  month        = {Fri Sep 29 00:00:00 EDT 2017}

}

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High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends
journal, October 2005

Design Rules for Donors in Bulk-Heterojunction Solar Cells—Towards 10 % Energy-Conversion Efficiency
journal, March 2006

Polymer–Fullerene Composite Solar Cells
journal, January 2008

Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable small molecule acceptor ternary solar cells
journal, November 2016

Fine-Tuned Photoactive and Interconnection Layers for Achieving over 13% Efficiency in a Fullerene-Free Tandem Organic Solar Cell
journal, May 2017

11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor
journal, December 2016

A Facile Planar Fused-Ring Electron Acceptor for As-Cast Polymer Solar Cells with 8.71% Efficiency
journal, February 2016

Alloy Acceptor: Superior Alternative to PCBM toward Efficient and Stable Organic Solar Cells
journal, June 2016

New insight of molecular interaction, crystallization and phase separation in higher performance small molecular solar cells via solvent vapor annealing
journal, December 2016

Efficient Tandem Polymer Solar Cells Fabricated by All-Solution Processing
journal, July 2007

Two Well-Miscible Acceptors Work as One for Efficient Fullerene-Free Organic Solar Cells
journal, May 2017

A Series of Simple Oligomer-like Small Molecules Based on Oligothiophenes for Solution-Processed Solar Cells with High Efficiency
journal, March 2015

High-Performance Ternary Organic Solar Cell Enabled by a Thick Active Layer Containing a Liquid Crystalline Small Molecule Donor
journal, February 2017

Small-Molecule Acceptor Based on the Heptacyclic Benzodi(cyclopentadithiophene) Unit for Highly Efficient Nonfullerene Organic Solar Cells
journal, March 2017

A polymer tandem solar cell with 10.6% power conversion efficiency
journal, February 2013

New Wide Band Gap Donor for Efficient Fullerene-Free All-Small-Molecule Organic Solar Cells
journal, January 2017

Charge carrier recombination in organic solar cells
journal, December 2013

Organic Ternary Solar Cells: A Review
journal, May 2013

9.73% Efficiency Nonfullerene All Organic Small Molecule Solar Cells with Absorption-Complementary Donor and Acceptor
journal, March 2017

Non-Fullerene Electron Acceptors for Use in Organic Solar Cells
journal, October 2015