Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
DOI: https://doi.org/10.29363/nanoge.hopv.2024.060
Publication date: 6th February 2024
Organic-inorganic halide perovskites are a versatile material class with excellent optoelectronic properties which hold promise for application in solar cells, photodetectors, lasers, and LEDs. Stability under device relevant conditions is a challenge for these materials. Thus, one of the current research directions is the stabilization of 3D halide perovskite thin films with 2D or quasi-2D layered perovskite phases. In this talk I will describe our joint efforts in stabilizing 3D perovskite films with 2D perovskites. I will first take a closer look at the 2D/3D interface formation[1] and second at interface diffusion. In situ photoluminescence measurements show that formation and diffusion significantly depend on the organic backbone of the 2D molecule, the nature of the halide, as well as on the 3D absorber composition which makes generalized statements about the 2D passivation strategy challenging. Another aspect I will briefly touch on is reproducibility challenges in the field. A robotic platform for the fabrication and characterization of thin films will be introduced to systematically screen the fabrication parameter space and thus improve reproducibility.[2]
Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
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International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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