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Title: Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM

Abstract

The performance of organic solar cells (OSCs) depends crucially on the morphology in bulk heterojunctions (BHJs), including the degree of crystallinity of the polymer and the amount of each material phase: aggregated donor, aggregated acceptor, and molecular mixed donor:acceptor phase. In this paper, we report the BHJ morphology of as-cast blend films incorporating the polymer PIPCP as the donor and [6,6]-phenyl-C 61-butyric acid methyl ester (PC 61BM) as the acceptor. Tracking the scattering intensity of PC 61BM as a function of PC 61BM concentration shows that PC 61BM aggregates into donor-rich domains and there is little to no phase where the PC 61BM and PIPCP are intimately mixed. We further find that on blending the scattering peak due to PIPCP ordering along the backbone increases with decreasing PIPCP fraction, which is attributed to improved ordering of PIPCP due to the presence of PC 61BM. Our results suggest that the improved ordering of PIPCP along the backbone (consistent with an increased conjugation length) with blending contributes to the observed low open-circuit voltage energy loss.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [3];  [4];  [5];  [5]; ORCiD logo [5]; ORCiD logo [1]
  1. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, USA
  2. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, USA, Department of Chemical Engineering
  3. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, USA, Department of Electrical Engineering
  4. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, USA, Department of Chemistry
  5. Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California—Santa Barbara, Santa Barbara, USA
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1492906
Alternate Identifier(s):
OSTI ID: 1507156
Grant/Contract Number:  
N00014-14-1-0580; N00014-16-1-2520; N00014-16-1-2678; AC02-76SF00515; ECCS-1542152; 105-2917-I-564-044
Resource Type:
Journal Article: Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Name: RSC Advances Journal Volume: 9 Journal Issue: 8; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United Kingdom
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Huang, Tzu-Yen, Yan, Hongping, Abdelsamie, Maged, Savikhin, Victoria, Schneider, Sebastian A., Ran, Niva A., Nguyen, Thuc-Quyen, Bazan, Guillermo C., and Toney, Michael F. Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM. United Kingdom: N. p., 2019. Web. doi:10.1039/C8RA10488C.
Huang, Tzu-Yen, Yan, Hongping, Abdelsamie, Maged, Savikhin, Victoria, Schneider, Sebastian A., Ran, Niva A., Nguyen, Thuc-Quyen, Bazan, Guillermo C., & Toney, Michael F. Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM. United Kingdom. https://doi.org/10.1039/C8RA10488C
Huang, Tzu-Yen, Yan, Hongping, Abdelsamie, Maged, Savikhin, Victoria, Schneider, Sebastian A., Ran, Niva A., Nguyen, Thuc-Quyen, Bazan, Guillermo C., and Toney, Michael F. Wed . "Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM". United Kingdom. https://doi.org/10.1039/C8RA10488C.
@article{osti_1492906,
title = {Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM},
author = {Huang, Tzu-Yen and Yan, Hongping and Abdelsamie, Maged and Savikhin, Victoria and Schneider, Sebastian A. and Ran, Niva A. and Nguyen, Thuc-Quyen and Bazan, Guillermo C. and Toney, Michael F.},
abstractNote = {The performance of organic solar cells (OSCs) depends crucially on the morphology in bulk heterojunctions (BHJs), including the degree of crystallinity of the polymer and the amount of each material phase: aggregated donor, aggregated acceptor, and molecular mixed donor:acceptor phase. In this paper, we report the BHJ morphology of as-cast blend films incorporating the polymer PIPCP as the donor and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as the acceptor. Tracking the scattering intensity of PC61BM as a function of PC61BM concentration shows that PC61BM aggregates into donor-rich domains and there is little to no phase where the PC61BM and PIPCP are intimately mixed. We further find that on blending the scattering peak due to PIPCP ordering along the backbone increases with decreasing PIPCP fraction, which is attributed to improved ordering of PIPCP due to the presence of PC61BM. Our results suggest that the improved ordering of PIPCP along the backbone (consistent with an increased conjugation length) with blending contributes to the observed low open-circuit voltage energy loss.},
doi = {10.1039/C8RA10488C},
url = {https://www.osti.gov/biblio/1492906}, journal = {RSC Advances},
issn = {2046-2069},
number = 8,
volume = 9,
place = {United Kingdom},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1039/C8RA10488C

Citation Metrics:
Cited by: 2 works
Citation information provided by
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Figures / Tables:

Fig. 1 Fig. 1: The chemical structure of (a) PIPCP and (b) PC 61BM.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.