Towards Improved Stability of Organic-Inorganic Perovskite Solar Cells
Aleksandra Djurisic a, Fangzhou Liu a, Ho Won Tam a, Tik Lun Leung a
a Department of Physics, The University of Hong Kong, Rm 314, Chong Yuet Ming Physics Building, The University of Hong Kong, Pokfulam Road
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Roma, Italy, 2019 May 12th - 15th
Organizers: Prashant Kamat, Filippo De Angelis and Aldo Di Carlo
Invited Speaker Session, Aleksandra Djurisic, presentation 003
DOI: https://doi.org/10.29363/nanoge.hopv.2019.003
Publication date: 11th February 2019

The efficiency of perovskite solar cells (PSCs) has been rapidly increasing since the first reports on the solid state devices in 2012, and the current record efficiency of 23.3% exceeds that of more mature technologies, such as CIGS and CdTe. However, the device stability remains a significant concern, and further improvements both in stability achieved as well as standardization of reported measurement protocols and results are needed for future commercialization of this technology. Therefore, we will discuss the degradation mechanisms in perovskite thin films and devices, with the emphasis on the effect of perovskite layer composition and deposition method on the film and device stability. The perovskite film composition, and consequently its photovoltaic performance and stability are strongly dependent on the deposition conditions. Next, we will discuss the effects of encapsulation on the device stability, which will include performance upon water immersion as well as standardized accelerated aging and outdoor testing according to ISOS protocols. Encapsulation protocols will be discussed for both rigid and flexible substrates. The efficiency of perovskite solar cells (PSCs) has been rapidly increasing since the first reports on the solid state devices in 2012, and the current record efficiency of 23.3% exceeds that of more mature technologies, such as CIGS and CdTe. However, the device stability remains a significant concern, and further improvements both in stability achieved as well as standardization of reported measurement protocols and results are needed for future commercialization of this technology. Therefore, we will discuss the degradation mechanisms in perovskite thin films and devices, with the emphasis on the effect of perovskite layer composition and deposition method on the film and device stability. The perovskite film composition, and consequently its photovoltaic performance and stability are strongly dependent on the deposition conditions. Next, we will discuss the effects of encapsulation on the device stability, which will include performance upon water immersion as well as standardized accelerated aging and outdoor testing according to ISOS protocols. Encapsulation protocols will be discussed for both rigid and flexible substrates.

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