Paper
31 December 2019 Light soak study of perovskite-based materials via scanning imaging spectroscopy
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Abstract
Organic-inorganic halide perovskite has emerged as promising candidate materials for next-generation energy harvesting and light-emitting applications with the advantages of low processing cost, high defects tolerance, and excellent power conversion efficiency. The instability of these perovskite-based materials under illumination, however, remains a major technical barrier for commercialization. Various techniques have been applied to improve the photo-stability of perovskites. Since the dynamic of photo-generated charged carriers and photo-activated mobile ions affect the stable performance of these applications, a comprehensive understanding of how illumination affect perovskites are of vital importance to improve the performance of perovskite-based optoelectronic applications. In this report, the recent progress of the light soak study on three kinds of perovskites is presented, using depth-resolved, temporal-resolved, and detection-wavelength selective spectroscopic imaging techniques. These works clarify different dominate roles in different perovskite structures and demonstrate the advantages of the imaging spectroscopy in studying the carrier dynamics of perovskite-based materials under light soaking, which is of crucial importance for their applications.
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Weijian Chen, Yến Vũ, Chunhua Zhou, Baohua Jia, and Xiaoming Wen "Light soak study of perovskite-based materials via scanning imaging spectroscopy", Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 112010S (31 December 2019); https://doi.org/10.1117/12.2539988
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KEYWORDS
Perovskite

Imaging spectroscopy

Ions

Diffusion

Optoelectronics

Carrier dynamics

Solar cells

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