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Title: Beyond Fullerenes: Indacenodithiophene-Based Organic Charge-Transport Layer toward Upscaling of Low-Cost Perovskite Solar Cells

Abstract

Phenyl-C 61-butyric acid methyl ester (PCBM) is universally used as the electron-transport layer (ETL) in the low-cost inverted planar structure of perovskite solar cells (PeSCs). PCBM brings tremendous challenges in upscaling of PeSCs using industry-relevant methods due to its aggregation behavior, which undermines the power conversion efficiency and stability. Herein, we highlight these, seldom reported, challenges with PCBM. Moreoever, we investigate the potential of nonfullerene indacenodithiophene (IDT)-based molecules by employing a commercially available variant, 3,9- bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))- 5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2',3'-d']-s-indaceno[1,2-b:5,6-b'] dithiophene (ITIC), as a PCBM replacement in ambient-processed PeSCs. Films fabrication by laboratory-based spin-coating and industry-relevant slot-die coating methods are compared. While similar power-conversion efficiencies are achieved with both types of ETL in a simple device structure fabricated by spin-coating, the nanofibriller morphology of ITIC compared to the aggregated morphology of PCBM films enables improved mechanical integrity and stability of ITIC devices. Upon slot-die coating, the aggregation of PCBM is exacerbated, leading to significantly lower power-conversion efficiency of devices than spin-coated PCBM as well as slot-diecoated ITIC devices. Our findings clearly suggest that IDT-based molecules have great potential as an ETL in PeSCs, offering superior properties and upscaling compatibility than PCBM. Thus, we present a short summary of recently emerged nonfullerene IDT-based moleculesmore » from the field of organic solar cells and discuss their scope in PeSCs as electron or holetransport layer.« less

Authors:
ORCiD logo [1];  [2];  [3];  [1];  [4];  [1];  [1];  [5];  [6];  [1];  [4]; ORCiD logo [1]
  1. Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, VIC (Australia). Flexible Electronics Lab.
  2. Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, VIC (Australia). Flexible Electronics Lab.; Wuhan Univ. of Technology (China). State Key Lab. of Silicate Materials for Architectures
  3. Wuhan Univ. of Technology (China). State Key Lab. of Silicate Materials for Architectures
  4. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  5. Univ. of Melbourne, Parkville, VIC (Australia). Bio 21 Inst., School of Chemistry
  6. Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, VIC (Australia). Flexible Electronics Lab.; Kunsan National Univ., Kunsan (Korea). Dept. of Nano and Chemical Engineering
Publication Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1579826
Grant/Contract Number:  
EE0004946
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 10; Journal Issue: 26; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; perovskite solar cell; nonfullerene; indacenodithiophene; ITIC; charge-transport layer

Citation Formats

Angmo, Dechan, Peng, Xiaojin, Cheng, Jinshu, Gao, Mei, Rolston, Nicholas, Sears, Kallista, Zuo, Chuantian, Subbiah, Jegadesan, Kim, Seok-Soon, Weerasinghe, Hasitha, Dauskardt, Reinhold H., and Vak, Doojin. Beyond Fullerenes: Indacenodithiophene-Based Organic Charge-Transport Layer toward Upscaling of Low-Cost Perovskite Solar Cells. United States: N. p., 2018. Web. doi:10.1021/acsami.8b04861.
Angmo, Dechan, Peng, Xiaojin, Cheng, Jinshu, Gao, Mei, Rolston, Nicholas, Sears, Kallista, Zuo, Chuantian, Subbiah, Jegadesan, Kim, Seok-Soon, Weerasinghe, Hasitha, Dauskardt, Reinhold H., & Vak, Doojin. Beyond Fullerenes: Indacenodithiophene-Based Organic Charge-Transport Layer toward Upscaling of Low-Cost Perovskite Solar Cells. United States. doi:10.1021/acsami.8b04861.
Angmo, Dechan, Peng, Xiaojin, Cheng, Jinshu, Gao, Mei, Rolston, Nicholas, Sears, Kallista, Zuo, Chuantian, Subbiah, Jegadesan, Kim, Seok-Soon, Weerasinghe, Hasitha, Dauskardt, Reinhold H., and Vak, Doojin. Thu . "Beyond Fullerenes: Indacenodithiophene-Based Organic Charge-Transport Layer toward Upscaling of Low-Cost Perovskite Solar Cells". United States. doi:10.1021/acsami.8b04861. https://www.osti.gov/servlets/purl/1579826.
@article{osti_1579826,
title = {Beyond Fullerenes: Indacenodithiophene-Based Organic Charge-Transport Layer toward Upscaling of Low-Cost Perovskite Solar Cells},
author = {Angmo, Dechan and Peng, Xiaojin and Cheng, Jinshu and Gao, Mei and Rolston, Nicholas and Sears, Kallista and Zuo, Chuantian and Subbiah, Jegadesan and Kim, Seok-Soon and Weerasinghe, Hasitha and Dauskardt, Reinhold H. and Vak, Doojin},
abstractNote = {Phenyl-C61-butyric acid methyl ester (PCBM) is universally used as the electron-transport layer (ETL) in the low-cost inverted planar structure of perovskite solar cells (PeSCs). PCBM brings tremendous challenges in upscaling of PeSCs using industry-relevant methods due to its aggregation behavior, which undermines the power conversion efficiency and stability. Herein, we highlight these, seldom reported, challenges with PCBM. Moreoever, we investigate the potential of nonfullerene indacenodithiophene (IDT)-based molecules by employing a commercially available variant, 3,9- bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))- 5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2',3'-d']-s-indaceno[1,2-b:5,6-b'] dithiophene (ITIC), as a PCBM replacement in ambient-processed PeSCs. Films fabrication by laboratory-based spin-coating and industry-relevant slot-die coating methods are compared. While similar power-conversion efficiencies are achieved with both types of ETL in a simple device structure fabricated by spin-coating, the nanofibriller morphology of ITIC compared to the aggregated morphology of PCBM films enables improved mechanical integrity and stability of ITIC devices. Upon slot-die coating, the aggregation of PCBM is exacerbated, leading to significantly lower power-conversion efficiency of devices than spin-coated PCBM as well as slot-diecoated ITIC devices. Our findings clearly suggest that IDT-based molecules have great potential as an ETL in PeSCs, offering superior properties and upscaling compatibility than PCBM. Thus, we present a short summary of recently emerged nonfullerene IDT-based molecules from the field of organic solar cells and discuss their scope in PeSCs as electron or holetransport layer.},
doi = {10.1021/acsami.8b04861},
journal = {ACS Applied Materials and Interfaces},
issn = {1944-8244},
number = 26,
volume = 10,
place = {United States},
year = {2018},
month = {6}
}

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Works referencing / citing this record:

Adjusting the energy levels and bandgaps of conjugated polymers via Lewis acid–base reactions
journal, January 2018

  • Li, Yongchun; Meng, Huifeng; Li, Yuqing
  • New Journal of Chemistry, Vol. 42, Issue 23
  • DOI: 10.1039/c8nj04453h

Device Physics of the Carrier Transporting Layer in Planar Perovskite Solar Cells
journal, July 2019

  • Ren, Xingang; Wang, Zi Shuai; Choy, Wallace C. H.
  • Advanced Optical Materials, Vol. 7, Issue 20
  • DOI: 10.1002/adom.201900407

Device Physics of the Carrier Transporting Layer in Planar Perovskite Solar Cells
journal, July 2019

  • Ren, Xingang; Wang, Zi Shuai; Choy, Wallace C. H.
  • Advanced Optical Materials, Vol. 7, Issue 20
  • DOI: 10.1002/adom.201900407

Adjusting the energy levels and bandgaps of conjugated polymers via Lewis acid–base reactions
journal, January 2018

  • Li, Yongchun; Meng, Huifeng; Li, Yuqing
  • New Journal of Chemistry, Vol. 42, Issue 23
  • DOI: 10.1039/c8nj04453h