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 | |
| 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
Ternary Organic Solar Cells with Small Nonradiative Recombination Loss. / Xie, Yuanpeng; Li, Tengfei; Guo, Jing; Bi, Pengqing; Xue, Xiaonan; Ryu, Hwa Sook; Cai, Yunhao; Min, Jie; Huo, Lijun; Hao, Xiaotao; Woo, Han Young; Zhan, Xiaowei; Sun, Yanming.
In: ACS Energy Letters, Vol. 4, No. 5, 10.05.2019, p. 1196-1203.Research output: Contribution to journal › Article
}
TY - JOUR
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
Y1 - 2019/5/10
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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U2 - 10.1021/acsenergylett.9b00681
DO - 10.1021/acsenergylett.9b00681
M3 - Article
VL - 4
SP - 1196
EP - 1203
JO - ACS Energy Letters
JF - ACS Energy Letters
SN - 2380-8195
IS - 5
ER -