15.9% organic tandem solar cell with extended near-infrared absorption
Abstract
Stacking single-junction organic solar cells is effective in increasing the power conversion efficiency (PCE) by reducing the thermalization loss and increasing the open circuit voltage. Current developments of non-fullerene acceptors (NFAs) offer a range of materials whose energy gaps are suited for absorbing relatively narrow slices of the solar spectrum, thus easing requirements for current balance between sub-elements in the multijunction stacks. In this report, we demonstrate a solution-processed tandem organic solar cell comprising a binary, visible-absorbing sub-cell and a ternary near-infrared (NIR) absorbing sub-cell. The ternary NIR sub-cell utilizes a narrow energy gap NFA acceptor that enables a broadened and increased absorption compared to a binary NIR sub-cell. An isopropanol surface treatment is developed to connect the hydrophilichydrophobic surfaces in the charge recombination zone (CRZ) located between the sub-cells. The nearly optically and electrically lossless CRZ combined with an anti-reflection coating results in a tandem OPV with PCE = 15.9 ± 0.2 % under AM 1.5G simulated illumination.
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; US Department of the Navy, Office of Naval Research (ONR); National Natural Science Foundation of China (NSFC)
- OSTI Identifier:
- 1630437
- Alternate Identifier(s):
- OSTI ID: 1632962
- Grant/Contract Number:
- EE0008561
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 15; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY
Citation Formats
Huang, Xinjing, Sun, Bangjin, Li, Yongxi, Jiang, Chao, Fan, Dejiu, Fan, Jian, and Forrest, Stephen R. 15.9% organic tandem solar cell with extended near-infrared absorption. United States: N. p., 2020.
Web. doi:10.1063/5.0005172.
Huang, Xinjing, Sun, Bangjin, Li, Yongxi, Jiang, Chao, Fan, Dejiu, Fan, Jian, & Forrest, Stephen R. 15.9% organic tandem solar cell with extended near-infrared absorption. United States. https://doi.org/10.1063/5.0005172
Huang, Xinjing, Sun, Bangjin, Li, Yongxi, Jiang, Chao, Fan, Dejiu, Fan, Jian, and Forrest, Stephen R. Mon .
"15.9% organic tandem solar cell with extended near-infrared absorption". United States. https://doi.org/10.1063/5.0005172. https://www.osti.gov/servlets/purl/1630437.
@article{osti_1630437,
title = {15.9% organic tandem solar cell with extended near-infrared absorption},
author = {Huang, Xinjing and Sun, Bangjin and Li, Yongxi and Jiang, Chao and Fan, Dejiu and Fan, Jian and Forrest, Stephen R.},
abstractNote = {Stacking single-junction organic solar cells is effective in increasing the power conversion efficiency (PCE) by reducing the thermalization loss and increasing the open circuit voltage. Current developments of non-fullerene acceptors (NFAs) offer a range of materials whose energy gaps are suited for absorbing relatively narrow slices of the solar spectrum, thus easing requirements for current balance between sub-elements in the multijunction stacks. In this report, we demonstrate a solution-processed tandem organic solar cell comprising a binary, visible-absorbing sub-cell and a ternary near-infrared (NIR) absorbing sub-cell. The ternary NIR sub-cell utilizes a narrow energy gap NFA acceptor that enables a broadened and increased absorption compared to a binary NIR sub-cell. An isopropanol surface treatment is developed to connect the hydrophilichydrophobic surfaces in the charge recombination zone (CRZ) located between the sub-cells. The nearly optically and electrically lossless CRZ combined with an anti-reflection coating results in a tandem OPV with PCE = 15.9 ± 0.2 % under AM 1.5G simulated illumination.},
doi = {10.1063/5.0005172},
journal = {Applied Physics Letters},
number = 15,
volume = 116,
place = {United States},
year = {Mon Apr 13 00:00:00 EDT 2020},
month = {Mon Apr 13 00:00:00 EDT 2020}
}
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