Interfacial material engineering for the perovskite solar cell stability improvement
Kasparas Rakstys a
a Department of Organic Chemistry, Kaunas University of Technology, Lithuania
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Oral, Kasparas Rakstys, presentation 060
Publication date: 20th April 2022

Solar energy is the most reliable, sustainable, and long-term source of energy that has the capacity to meet global electricity needs while providing environmentally friendly and grid-free electricity. There are three main requirements for any solar cell technology: low-cost components, high efficiency, and long-term performance. The advantages of the perovskite solar cells (PSCs) are the abundance of affordable and inexpensive materials that are solution-processable reducing the cost of manufacturing large-area panels. The era of PSCs began in 2009, when the power conversion efficiency (PCE) was only 3.8%, but due to the unique optical and electrical perovskite properties, PSCs quickly became one of the most researched solar technology. Rapid improvements in the device engineering and perovskite composition have made it possible to achieve a commercially attractive PCE exceeding 25%. Nevertheless, several challenges remain for the industrial application of perovskite solar cells. The biggest problem is considered to be the long-term stability of the light-absorbing three-dimensional (3D) perovskite compositions due to decomposition under atmospheric conditions. In this talk, novel perovskite compositions with the required hydrophobic properties and passivation strategies for the fabrication of PSCs to prevent direct contact with moisture, improve carrier transport and dipole moment leading to better device stability will be presented.

K.R. acknowledges funding from the Research Council of Lithuania via grant No. S-MIP-20-20 and the funding received from the MJJ Foundation.

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