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Title: Flow-enhanced solution printing of all-polymer solar cells

Abstract

Morphology control of solution coated solar cell materials presents a key challenge limiting their device performance and commercial viability. Here we present a new concept for controlling phase separation during solution printing using an all-polymer bulk heterojunction solar cell as a model system. The key aspect of our method lies in the design of fluid flow using a microstructured printing blade, on the basis of the hypothesis of flow-induced polymer crystallization. Our flow design resulted in a similar to 90% increase in the donor thin film crystallinity and reduced microphase separated donor and acceptor domain sizes. The improved morphology enhanced all metrics of solar cell device performance across various printing conditions, specifically leading to higher short-circuit current, fill factor, open circuit voltage and significantly reduced device-to-device variation. However, we expect our design concept to have broad applications beyond all-polymer solar cells because of its simplicity and versatility.

Authors:
 [1];  [1];  [2]; ORCiD logo [2]; ORCiD logo [3];  [2];  [4];  [2];  [2];  [1];  [2];  [5];  [1];  [4];  [6];  [7];  [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
  2. Stanford Univ., Stanford, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Peking Univ., Beijing (China)
  5. Sungkyunkwan Univ. (SKKU), Suwon (Republic of Korea); Stanford Univ., Stanford, CA (United States)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States); Dresden Univ. of Technology, Dresden (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1238256
Grant/Contract Number:  
AC03-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY; chemical sciences; fluids and plasma physics; physical chemistry; materials science

Citation Formats

Diao, Ying, Zhou, Yan, Kurosawa, Tadanori, Shaw, Leo, Wang, Cheng, Park, Steve, Guo, Yikun, Reinspach, Julia A., Gu, Kevin, Gu, Xiaodan, Tee, Benjamin C. K., Pang, Changhyun, Yan, Hongping, Zhao, Dahui, Toney, Michael F., Mannsfeld, Stefan C. B., and Bao, Zhenan. Flow-enhanced solution printing of all-polymer solar cells. United States: N. p., 2015. Web. doi:10.1038/ncomms8955.
Diao, Ying, Zhou, Yan, Kurosawa, Tadanori, Shaw, Leo, Wang, Cheng, Park, Steve, Guo, Yikun, Reinspach, Julia A., Gu, Kevin, Gu, Xiaodan, Tee, Benjamin C. K., Pang, Changhyun, Yan, Hongping, Zhao, Dahui, Toney, Michael F., Mannsfeld, Stefan C. B., & Bao, Zhenan. Flow-enhanced solution printing of all-polymer solar cells. United States. doi:10.1038/ncomms8955.
Diao, Ying, Zhou, Yan, Kurosawa, Tadanori, Shaw, Leo, Wang, Cheng, Park, Steve, Guo, Yikun, Reinspach, Julia A., Gu, Kevin, Gu, Xiaodan, Tee, Benjamin C. K., Pang, Changhyun, Yan, Hongping, Zhao, Dahui, Toney, Michael F., Mannsfeld, Stefan C. B., and Bao, Zhenan. Wed . "Flow-enhanced solution printing of all-polymer solar cells". United States. doi:10.1038/ncomms8955. https://www.osti.gov/servlets/purl/1238256.
@article{osti_1238256,
title = {Flow-enhanced solution printing of all-polymer solar cells},
author = {Diao, Ying and Zhou, Yan and Kurosawa, Tadanori and Shaw, Leo and Wang, Cheng and Park, Steve and Guo, Yikun and Reinspach, Julia A. and Gu, Kevin and Gu, Xiaodan and Tee, Benjamin C. K. and Pang, Changhyun and Yan, Hongping and Zhao, Dahui and Toney, Michael F. and Mannsfeld, Stefan C. B. and Bao, Zhenan},
abstractNote = {Morphology control of solution coated solar cell materials presents a key challenge limiting their device performance and commercial viability. Here we present a new concept for controlling phase separation during solution printing using an all-polymer bulk heterojunction solar cell as a model system. The key aspect of our method lies in the design of fluid flow using a microstructured printing blade, on the basis of the hypothesis of flow-induced polymer crystallization. Our flow design resulted in a similar to 90% increase in the donor thin film crystallinity and reduced microphase separated donor and acceptor domain sizes. The improved morphology enhanced all metrics of solar cell device performance across various printing conditions, specifically leading to higher short-circuit current, fill factor, open circuit voltage and significantly reduced device-to-device variation. However, we expect our design concept to have broad applications beyond all-polymer solar cells because of its simplicity and versatility.},
doi = {10.1038/ncomms8955},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {2015},
month = {8}
}

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    Works referencing / citing this record:

    In Situ Structure Characterization in Slot‐Die‐Printed All‐Polymer Solar Cells with Efficiency Over 9%
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