Achieving Balanced Crystallization Kinetics of Donor and Acceptor by Sequential-Blade Coated Double Bulk Heterojunction Organic Solar Cells
Abstract
Sequential deposition has great potential to achieve high performance in organic solar cells due to the resulting well-controlled vertical phase separation. In this work, double bulk heterojunction organic solar cells are fabricated by sequential-blade cast in ambient conditions. Probed by the in situ grazing incidence X-ray diffraction and in situ UV–vis absorption measurements, the seq-blade system exhibits a different tendency from each of the binary films during the film formation process. Due to the extensive aggregation of FOIC, the binary PBDB-T:FOIC film displays a strong and large phase separation, resulting in low current density (J sc) and unsatisfactory power conversion efficiency. In the seq-blade cast system, the bottom layer PBDB-T:IT-M produces many crystal nuclei for the top layer PBDB-T:FOIC, so the PBDB-T molecules are able to crystallize easily and quickly. Balanced crystallization kinetics between polymer and small molecule and an ideal percolation network in the film are observed. In addition, the balanced crystallization kinetics are favorable toward realizing lower recombination loss through charge transport processes.
- Authors:
-
[1]
- Xi'an Jiaotong Univ., Shaanxi (China)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Donghua Univ., Shanghai (China)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1637702
- Alternate Identifier(s):
- OSTI ID: 1633127
- Grant/Contract Number:
- AC02-76SF00515; 2016YFA0200700; 21704082; 21875182; 21534003; 2017M623162; BP2018008; 2020JQ‐015; DE‐AC02‐05CH11231; AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 28; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE
Citation Formats
Wang, Yilin, Wang, Xiaohui, Lin, Baojun, Bi, Zhaozhao, Zhou, Xiaobo, Naveed, Hafiz Bilal, Zhou, Ke, Yan, Hongping, Tang, Zheng, and Ma, Wei. Achieving Balanced Crystallization Kinetics of Donor and Acceptor by Sequential-Blade Coated Double Bulk Heterojunction Organic Solar Cells. United States: N. p., 2020.
Web. doi:10.1002/aenm.202000826.
Wang, Yilin, Wang, Xiaohui, Lin, Baojun, Bi, Zhaozhao, Zhou, Xiaobo, Naveed, Hafiz Bilal, Zhou, Ke, Yan, Hongping, Tang, Zheng, & Ma, Wei. Achieving Balanced Crystallization Kinetics of Donor and Acceptor by Sequential-Blade Coated Double Bulk Heterojunction Organic Solar Cells. United States. https://doi.org/10.1002/aenm.202000826
Wang, Yilin, Wang, Xiaohui, Lin, Baojun, Bi, Zhaozhao, Zhou, Xiaobo, Naveed, Hafiz Bilal, Zhou, Ke, Yan, Hongping, Tang, Zheng, and Ma, Wei. Thu .
"Achieving Balanced Crystallization Kinetics of Donor and Acceptor by Sequential-Blade Coated Double Bulk Heterojunction Organic Solar Cells". United States. https://doi.org/10.1002/aenm.202000826. https://www.osti.gov/servlets/purl/1637702.
@article{osti_1637702,
title = {Achieving Balanced Crystallization Kinetics of Donor and Acceptor by Sequential-Blade Coated Double Bulk Heterojunction Organic Solar Cells},
author = {Wang, Yilin and Wang, Xiaohui and Lin, Baojun and Bi, Zhaozhao and Zhou, Xiaobo and Naveed, Hafiz Bilal and Zhou, Ke and Yan, Hongping and Tang, Zheng and Ma, Wei},
abstractNote = {Sequential deposition has great potential to achieve high performance in organic solar cells due to the resulting well-controlled vertical phase separation. In this work, double bulk heterojunction organic solar cells are fabricated by sequential-blade cast in ambient conditions. Probed by the in situ grazing incidence X-ray diffraction and in situ UV–vis absorption measurements, the seq-blade system exhibits a different tendency from each of the binary films during the film formation process. Due to the extensive aggregation of FOIC, the binary PBDB-T:FOIC film displays a strong and large phase separation, resulting in low current density (J sc) and unsatisfactory power conversion efficiency. In the seq-blade cast system, the bottom layer PBDB-T:IT-M produces many crystal nuclei for the top layer PBDB-T:FOIC, so the PBDB-T molecules are able to crystallize easily and quickly. Balanced crystallization kinetics between polymer and small molecule and an ideal percolation network in the film are observed. In addition, the balanced crystallization kinetics are favorable toward realizing lower recombination loss through charge transport processes.},
doi = {10.1002/aenm.202000826},
journal = {Advanced Energy Materials},
number = 28,
volume = 10,
place = {United States},
year = {Thu Jun 11 00:00:00 EDT 2020},
month = {Thu Jun 11 00:00:00 EDT 2020}
}
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