Exciton diffusion and dissociation in organic and quantum‐dot solar cells

For the process of photovoltaic conversion in organic solar cells (OSCs) and quantum‐dot solar cells (QDSCs), three of four steps are determined by exciton behavior, namely, exciton generation, exciton diffusion, and exciton dissociation. Therefore, it is of great importance to regulate exciton beha...

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Bibliographic Details
Published in:SmartMat (Beijing, China) China), 2023-12, Vol.4 (6), p.n/a
Main Authors: He, Dan, Zeng, Miao, Zhang, Zhenzhen, Bai, Yang, Xing, Guichuan, Cheng, Hui‐Ming, Lin, Yuze
Format: Article
Language:English
Subjects:
Diffusion coefficient
Diffusion length
Efficiency
Energy
Energy conversion efficiency
exciton behavior
exciton diffusion
exciton dissociation
Excitons
organic solar cells
Photovoltaic cells
Photovoltaic conversion
Quantum dots
quantum‐dot solar cells
Semiconductors
Solar cells
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Summary:For the process of photovoltaic conversion in organic solar cells (OSCs) and quantum‐dot solar cells (QDSCs), three of four steps are determined by exciton behavior, namely, exciton generation, exciton diffusion, and exciton dissociation. Therefore, it is of great importance to regulate exciton behavior in OSCs and QDSCs for achieving high power conversion efficiency. Due to the rapid development in materials and device fabrication, great progress has been made to manage the exciton behavior to achieve prolonged exciton diffusion length and improved exciton dissociation in recent years. In this review, we first introduce the parameters that affect exciton behavior, followed by the methods to measure exciton diffusion length. Then, we provide an overview of the recent advances with regard to exciton behavior investigation in OSCs and QDSCs, including exciton lifetime, exciton diffusion coefficient, and exciton dissociation. Finally, we propose future directions in deepening the understanding of exciton behavior and boosting the performance of OSCs and QDSCs. Exciton behavior plays a crucial role in the photovoltaic conversion process of organic solar cells (OSCs) and quantum‐dot solar cells (QDSCs). Great progress has been made to regulate the exciton behavior in recent years. Herein, we summarize the advancement in exciton behavior studies of OSCs and QDSCs from the exciton diffusion coefficient, exciton lifetime, and exciton dissociation.
ISSN:2688-819X
2766-8525
2688-819X
DOI:10.1002/smm2.1176