Development of encapsulation strategies towards the commercialization of perovskite solar cells
After a decade of research and development on perovskite solar cells (PSCs), the achievements targeting device stability have fallen far behind the progress made in the photoelectric conversion efficiency, which is a major obstacle in their commercialization. Although an in-depth understanding of th...
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| Published in | Energy & environmental science Vol. 15; no. 1; pp. 13 - 55 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Cambridge
Royal Society of Chemistry
19.01.2022
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| Subjects | |
| Online Access | Get full text |
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| Summary: | After a decade of research and development on perovskite solar cells (PSCs), the achievements targeting device stability have fallen far behind the progress made in the photoelectric conversion efficiency, which is a major obstacle in their commercialization. Although an in-depth understanding of the origin of the intrinsic and extrinsic degradation mechanisms is being rapidly acquired for these materials, the device architecture and module, together with synthetic strategies developed to improve the stability of the functional layers within the device (to inhibit phase and crystal structure transition, ion migration, morphology degradation, and surface and bulk chemical reactions), a consensus is forming that systematic encapsulation is indispensable in the device and module architecture to effectively resist harsh outdoor ageing stressors. This review, by focusing on the fundamental and technological development in the encapsulation studies of PSCs, discusses the role of encapsulation in preventing moisture and oxygen intrusion, which relies mainly on the selection of encapsulation materials, optimization of the encapsulation architecture and a more broadened sense of encapsulation to avoid the leakage of lead and improve the intrinsic stabilities of various materials in the device. Therefore, this review firstly summarizes the current state-of-the-art encapsulation approaches in various optoelectronic devices (light-emitting diodes, organic photovoltaic cells, and silicon solar cells) for their possible implications on PSCs. Then, targeting the moisture and oxygen stability, photostability, thermal stability, damp-heat stability, and thermal cycling stability, this review highlights the impact of encapsulation on these stabilities specifically. Furthermore, the authors advocate the establishment of standard and consistent procedures for the assessment of encapsulation materials and the stability of encapsulated devices for a more quantificational investigation and comparison. Finally, the current encapsulation materials are summarized for diverse techniques, developing a systematic concept of encapsulation, namely internal encapsulation, such as grain boundary encapsulation, surface and interface encapsulation, and device-level external encapsulation. This review thus offers an outlook on future material design, which may hopefully inspire future development of encapsulation technologies for PSCs.
Systematic encapsulation of PVSK solar cells is comprehensively reviewed by considering external encapsulation against H
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O/O
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intrusion, along with internal encapsulation to improve the intrinsic stabilities of their constituting layers. |
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| Bibliography: | Guizhou Yuan received his Bachelor's degree in 2016 from the College of Chemistry & Molecular Engineering, Qingdao University of Science and Technology. Subsequently, he received his Master's degree in 2019 from the Department of Chemistry and Chemical Engineering, BIT. Currently, he is a PhD candidate in the School of Materials Science & Engineering, BIT, which he joined in 9/2019. His research interest is the long-term stability of perovskite solar cells. Prof. Yujing Li obtained his BS degree from the Department of Chemical Engineering at Tsinghua University, Beijing and PhD degree from the Department of Materials Science and Engineering at University of California, Los Angeles. He is currently working as professor at the School of Materials Science and Engineering at the Beijing Institute of Technology (BIT). He is interested in pursuing fundamental understanding of the degradation mechanism of materials and energy conversion devices. His research is mainly focused on the design of highly stable nanoscale structures and hybrid materials for photovoltaic, photocatalytic, and electrocatalytic applications. Prof. Qi Chen obtained both his BS and MS degrees from Tsinghua University, and received his PhD degree at University of California, Los Angeles (UCLA). From 2013-2016, he worked as a Postdoc Fellow at the California Nanosystems Institute (CNSI), UCLA. Currently, he is a Professor at the Beijing Institute of Technology. His research focuses on hybrid material design, processing and applications in optoelectronics for energy harvesting and storage. To date, he has published over 100 SCI papers with a total citation count of 20 000. Currently, he is working on fundamental research on perovskite solar cells and their commercialization. Ying Zhang received her Bachelor's degree from the School of Materials Science & Engineering, Beijing Institute of Technology, in 2019. She is currently a Master's student under the supervision of Professor Qi Chen at the Beijing Institute of Technology. She is devoted to exploring manufacturing processing for highly efficient and stable perovskite solar cells. Sai Ma received his BS degree from the Department of Materials Science and Engineering at Taiyuan University of Technology (TYUT), and MS degree from the Department of Materials Science and Engineering at the Beijing Institute of Technology (BIT). Currently, he is a PhD candidate at the Beijing Institute of Technology. His research focuses on the degradation mechanism of hybrid perovskite materials and photovoltaic devices under harsh outdoor ageing stressors. Currently, he is working on the development of perovskite-specific systematic encapsulation technology to address the stability issues of perovskite solar cells. Ning Yang received her Master's degree from the School of Chemistry and Chemical Engineering, Beijing Institute of Technology in 2019. Currently, she is a PhD candidate under the supervision of Prof. Qi Chen at the School of Materials Science & Technology, Beijing Institute of Technology. Her current research interest is developing high-efficiency and stable large-scale perovskite solar cells. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 |
| ISSN: | 1754-5692 1754-5706 |
| DOI: | 10.1039/d1ee02882k |