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Simultaneously Improved Efficiency and Stability in All-Polymer Solar Cells by a P–i–N Architecture AITranslate

Yalong Xu; Jianyu Yuan; Shuyan Liang; JingDe Chen; Yuxin Xia; Bryon W. Larson; Yusheng Wang; Gregory M. Su; Yannan Zhang; Chaohua Cui; Ming Wang; Haibin Zhao; Wanli Ma;
Soochow University; Soochow University; Fudan University; Soochow University; Linköping University; National Renewable Energy Laboratory; Soochow University; Lawrence Berkeley National Laboratory; Soochow University; Soochow University; Donghua University; Fudan University; Soochow University
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Abstract AITranslate

All-polymer organic solar cells offer exceptional stability. Unfortunately, the use of bulk heterojunction (BHJ) structure has the intrinsic challenge to control the side-chain entanglement and backbone orientation to achieve sophisticated phase separation in all-polymer blends. Here, we revealed that the P–i–N structure can outperform the BHJ ones with a nearly 50% efficiency improvement, reaching a power conversion efficiency approaching 10%. This P–i–N structure can also provide an enhanced internal electric field and remarkably stable morphology under harsh thermal stress. We have further demonstrated generality of the P–i–N structure in several other all-polymer systems. Considering the adjustable polymer molecular weight and solubility, the P–i–N device structure can be more beneficial for all-polymer systems. With the design of more crystalline polymers, the antiquated P–i–N structure can further show its strength in all-polymer systems by simplified morphology control and improved carrier extraction, becoming a more favorite device structure than the dominant BHJ structure.

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DOI：https://doi.org/10.1021/acsenergylett.9b01459

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Citation Information:

All-polymer organic solar cells offer exceptional stability. Unfortunately, the use of bulk heterojunction (BHJ) structure has the intrinsic challenge to control the side-chain entanglement and backbone orientation to achieve sophisticated phase separation in all-polymer blends. Here, we revealed that the P–i–N structure can outperform the BHJ ones with a nearly 50% efficiency improvement, reaching a power conversion efficiency approaching 10%. This P–i–N structure can also provide an enhanced internal electric field and remarkably stable morphology under harsh thermal stress. We have further demonstrated generality of the P–i–N structure in several other all-polymer systems. Considering the adjustable polymer molecular weight and solubility, the P–i–N device structure can be more beneficial for all-polymer systems. With the design of more crystalline polymers, the antiquated P–i–N structure can further show its strength in all-polymer systems by simplified morphology control and improved carrier extraction, becoming a more favorite device structure than the dominant BHJ structure.

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GB/T 7714-2015 [1] Yalong Xu, Jianyu Yuan, Shuyan Liang, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.9b01459.
MLA [1] Yalong Xu, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.9b01459.
APA [1] Yalong Xu, Jianyu Yuan, Shuyan Liang, JingDe Chen, Yuxin Xia, Bryon W. Larson, Yusheng Wang, Gregory M. Su, Yannan Zhang, Chaohua Cui, Ming Wang, Haibin Zhao, & Wanli Ma. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.9b01459
IEEE [1] Yalong Xu, Jianyu Yuan, Shuyan Liang, JingDe Chen, Yuxin Xia, Bryon W. Larson, Yusheng Wang, Gregory M. Su, Yannan Zhang, Chaohua Cui, Ming Wang, Haibin Zhao, and Wanli Ma, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.9b01459.