DataVXACS Energy LettersPaper
journal article·2024-05-10

Mesoscale Ordering 3D Mosaic Self-Assembly of Dopant-Free Hole Transport Material for Perovskite Solar Cells

Xiaoyuan Liu, Keli Wang, Yuheng Li, Shuai You, Tuo Liu, Yifan Lv, Yuan Li, Yu Wang, Haoxiang He, Yinxin Li, Qian Chen, Pengfei Xie, Yonghua Chen, Xiong Li, Zong-Xiang Xu

ACS Energy Letters· Volume 9· Issue 5
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Source abstract

Abstract

To enhance n-i-p perovskite solar cell (PSC) performance, we optimized the hole transport material (HTM) by using a cost-effective N, N ′-bicarbazole-based molecule, BCzSPA, with a 3D conjugated extended “L”-type configuration, to fix the molecular packing model and charge hopping channel. By implementing mesoscale molecular tailoring strategies to order the molecular stacking of BCzSPA, we have significantly realized a dense 3D mosaic self-assembly with intermolecular coupling and multichannel charge hopping properties. The proper incorporation of heteroatom-promoted multidirectional molecular interactions and enhanced morphological stability has simultaneously optimized the perovskite/HTM interfacial contact, inhibited defect formation, and further suppressed charge recombination loss. As a result, the resulting PSCs have achieved a promising efficiency of 25.42% (certified PCE, 24.53%) for a small-area (0.1 cm 2 ) device as well as 24.01% for a large-area (1 cm 2 ) device, while demonstrating remarkable stabilities, with T 80 lifetimes exceeding 2400 h under operation or thermal aging at 85 °C.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong People’s Republic of China

Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China

Key Laboratory of Flexible Electronics (KLoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, Jiangsu, People’s Republic of China

School of Information Science and Engineering, Shandong University, Qingdao 266237, People’s Republic of China

Funding

National Key Research and Development Program of China · Basic and Applied Basic Research Foundation of Guangdong Province · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Wuhan National Laboratory for Optoelectronics · State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University

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