Ternary Organic Solar Cells with Small Nonradiative Recombination Loss

Yuanpeng Xie; Tengfei Li; Jing Guo; Pengqing Bi; Xiaonan Xue; Hwa Sook Ryu; Yunhao Cai; Jie Min; Lijun Huo; Xiaotao Hao; Han Young Woo; Xiaowei Zhan; Yanming Sun

doi:10.1021/acsenergylett.9b00681

Ternary Organic Solar Cells with Small Nonradiative Recombination Loss

Yuanpeng Xie, Tengfei Li, Jing Guo, Pengqing Bi, Xiaonan Xue, Hwa Sook Ryu, Yunhao Cai, Jie Min, Lijun Huo, Xiaotao Hao, Han Young Woo, Xiaowei Zhan, Yanming Sun

Department of Chemistry

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

Nonradiative recombination loss (qΔVocnonrad), as a large component of energy loss (E _loss ), has become an important factor that limits the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, high-performance ternary OSCs based on a polymer donor PTB7-Th, a polymer donor PBDTm-T1, and a nonfullerene acceptor FOIC are reported. When blended with FOIC, the PBDTm-T1-based device yielded a smallest qΔVocnonrad of 0.197 eV, but with a moderate PCE of 3.3%. In contrast, the PTB7-Th:FOIC device exhibited a relatively higher qΔVocnonrad of 0.329 eV; however, a high PCE of 11.9% was found. This trade-off relationship has been resolved using a ternary blend. By incorporation of 20% PBDTm-T1 into the PTB7-Th:FOIC blend, a small qΔVocnonrad value of 0.271 eV and a significantly high PCE of 13.8% were simultaneously obtained. The results demonstrate that the nonradiative recombination loss can be effectively reduced by using a ternary strategy.

Original language	English
Pages (from-to)	1196-1203
Number of pages	8
Journal	ACS Energy Letters
Volume	4
Issue number	5
DOIs	https://doi.org/10.1021/acsenergylett.9b00681
Publication status	Published - 2019 May 10

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ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

Cite this

Xie, Y., Li, T., Guo, J., Bi, P., Xue, X., Ryu, H. S., Cai, Y., Min, J., Huo, L., Hao, X., Woo, H. Y., Zhan, X., & Sun, Y. (2019). Ternary Organic Solar Cells with Small Nonradiative Recombination Loss. ACS Energy Letters, 4(5), 1196-1203. https://doi.org/10.1021/acsenergylett.9b00681

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abstract = " Nonradiative recombination loss (qΔVocnonrad), as a large component of energy loss (E loss ), has become an important factor that limits the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, high-performance ternary OSCs based on a polymer donor PTB7-Th, a polymer donor PBDTm-T1, and a nonfullerene acceptor FOIC are reported. When blended with FOIC, the PBDTm-T1-based device yielded a smallest qΔVocnonrad of 0.197 eV, but with a moderate PCE of 3.3%. In contrast, the PTB7-Th:FOIC device exhibited a relatively higher qΔVocnonrad of 0.329 eV; however, a high PCE of 11.9% was found. This trade-off relationship has been resolved using a ternary blend. By incorporation of 20% PBDTm-T1 into the PTB7-Th:FOIC blend, a small qΔVocnonrad value of 0.271 eV and a significantly high PCE of 13.8% were simultaneously obtained. The results demonstrate that the nonradiative recombination loss can be effectively reduced by using a ternary strategy. ",

author = "Yuanpeng Xie and Tengfei Li and Jing Guo and Pengqing Bi and Xiaonan Xue and Ryu, {Hwa Sook} and Yunhao Cai and Jie Min and Lijun Huo and Xiaotao Hao and Woo, {Han Young} and Xiaowei Zhan and Yanming Sun",

year = "2019",

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doi = "10.1021/acsenergylett.9b00681",

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T1 - Ternary Organic Solar Cells with Small Nonradiative Recombination Loss

AU - Xie, Yuanpeng

AU - Li, Tengfei

AU - Guo, Jing

AU - Bi, Pengqing

AU - Xue, Xiaonan

AU - Ryu, Hwa Sook

AU - Cai, Yunhao

AU - Min, Jie

AU - Huo, Lijun

AU - Hao, Xiaotao

AU - Woo, Han Young

AU - Zhan, Xiaowei

AU - Sun, Yanming

PY - 2019/5/10

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N2 - Nonradiative recombination loss (qΔVocnonrad), as a large component of energy loss (E loss ), has become an important factor that limits the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, high-performance ternary OSCs based on a polymer donor PTB7-Th, a polymer donor PBDTm-T1, and a nonfullerene acceptor FOIC are reported. When blended with FOIC, the PBDTm-T1-based device yielded a smallest qΔVocnonrad of 0.197 eV, but with a moderate PCE of 3.3%. In contrast, the PTB7-Th:FOIC device exhibited a relatively higher qΔVocnonrad of 0.329 eV; however, a high PCE of 11.9% was found. This trade-off relationship has been resolved using a ternary blend. By incorporation of 20% PBDTm-T1 into the PTB7-Th:FOIC blend, a small qΔVocnonrad value of 0.271 eV and a significantly high PCE of 13.8% were simultaneously obtained. The results demonstrate that the nonradiative recombination loss can be effectively reduced by using a ternary strategy.

AB - Nonradiative recombination loss (qΔVocnonrad), as a large component of energy loss (E loss ), has become an important factor that limits the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, high-performance ternary OSCs based on a polymer donor PTB7-Th, a polymer donor PBDTm-T1, and a nonfullerene acceptor FOIC are reported. When blended with FOIC, the PBDTm-T1-based device yielded a smallest qΔVocnonrad of 0.197 eV, but with a moderate PCE of 3.3%. In contrast, the PTB7-Th:FOIC device exhibited a relatively higher qΔVocnonrad of 0.329 eV; however, a high PCE of 11.9% was found. This trade-off relationship has been resolved using a ternary blend. By incorporation of 20% PBDTm-T1 into the PTB7-Th:FOIC blend, a small qΔVocnonrad value of 0.271 eV and a significantly high PCE of 13.8% were simultaneously obtained. The results demonstrate that the nonradiative recombination loss can be effectively reduced by using a ternary strategy.

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10.1021/acsenergylett.9b00681