Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

doi:10.1088/1674-1056/28/8/088802

中国物理B ›› 2019, Vol. 28 ›› Issue (8): 88802-088802.doi: 10.1088/1674-1056/28/8/088802

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇

Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

Xiang Li(李想), Zhiqun He(何志群), Mengjie Sun(孙盟杰), Huimin Zhang(张慧敏), Zebang Guo(郭泽邦), Yajun Xu(许亚军), Han Li(李瀚), Chunjun Liang(梁春军), Xiping Jing(荆西平)

1 Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

收稿日期:2019-04-09 修回日期:2019-05-21 出版日期:2019-08-05 发布日期:2019-08-05
通讯作者: Zhiqun He E-mail:zhqhe@bjtu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474017, 61574014, and 61874008).

Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

Xiang Li(李想)¹, Zhiqun He(何志群)¹, Mengjie Sun(孙盟杰)¹, Huimin Zhang(张慧敏)¹, Zebang Guo(郭泽邦)¹, Yajun Xu(许亚军)¹, Han Li(李瀚)¹, Chunjun Liang(梁春军)¹, Xiping Jing(荆西平)²

1 Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China;
2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Received:2019-04-09 Revised:2019-05-21 Online:2019-08-05 Published:2019-08-05
Contact: Zhiqun He E-mail:zhqhe@bjtu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474017, 61574014, and 61874008).

摘要/Abstract

摘要：

Bulk heterojunction, non-fullerene PBDB-T:ITIC blend polymer solar cells have been fabricated. The active layers consisting of PBDB-T as a donor and ITIC as an acceptor are optimized using a series of alkylthiol additives (1,3-propanedithiol, 1,4-butanedithiol, and 1,8-octanedithiol). It is found that the donor and acceptor are phase separated with different crystalline domains. The additives effectively re-organize the morphology and extend the molecule ordering in lamellar structure with increased correlation length in ITIC domain, benefiting the generation and dissociation of exciton and reducing charge recombination. A substantial improvement in power conversion efficiency of the devices from 8.13% to 9.44% is observed. This study shows that the application of alkylthiol additives is a simple and effective approach to improve the device performance in solar cells based on polymer/non-fullerene blend system.

关键词: bulk heterojunction (BHJ) polymer/non-fullerene solar cells, solvent additive, morphology, crystallization

Abstract:

Key words: bulk heterojunction (BHJ) polymer/non-fullerene solar cells, solvent additive, morphology, crystallization

中图分类号: (Organic photovoltaics)

88.40.jr

78.55.-m (Photoluminescence, properties and materials) 61.05.C- (X-ray diffraction and scattering) 73.50.Gr (Charge carriers: generation, recombination, lifetime, trapping, mean free paths)

李想, 何志群, 孙盟杰, 张慧敏, 郭泽邦, 许亚军, 李瀚, 梁春军, 荆西平. Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications[J]. 中国物理B, 2019, 28(8): 88802-088802.

Xiang Li(李想), Zhiqun He(何志群), Mengjie Sun(孙盟杰), Huimin Zhang(张慧敏), Zebang Guo(郭泽邦), Yajun Xu(许亚军), Han Li(李瀚), Chunjun Liang(梁春军), Xiping Jing(荆西平). Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications[J]. Chin. Phys. B, 2019, 28(8): 88802-088802.

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Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

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