Publication date: 4th October 2024
Halide perovskites hold immense potential for the future of optoelectronics. Although there is still much to uncover and harness in terms of their capabilities, it's evident that perovskites can outperform established semiconductors in many applications, offering similar performance at a fraction of the production cost. Over the past decade, photovoltaics have emerged as the most appealing application, with perovskites displaying remarkable adaptability to work alongside silicon as the most efficient single-junction for both outdoor and indoor applications. Undoubtedly, perovskites will play a pivotal role in the future of photovoltaics, prompting considerations about the environmental and health impact of large-scale production. The mainstream perovskite for photovoltaics contains lead, a highly toxic and water-soluble element, posing significant environmental and health risks. Addressing the toxicity risk is crucial, and proposing in situ quenching of the lead in case of water ingress in the photovoltaic module can mitigate this issue. This solution avoids the risk of dispersing lead into the environment, but challenges remain, including disposal or recycling. The ultimate solution lies in replacing lead with a non-toxic element like tin.
Tin-based perovskites have the potential to outperform lead-based perovskites for solar cells, albeit being more sensitive to external degradation factors linked to oxygen and water. I will present the most recent progress in enhancing the stability of tin-based perovskites for photovoltaics. Sn-based perovskites have achieved a record efficiency of 17%, compared to 26% for their lead counterparts. However, lead-based perovskites suffer from intrinsic instability issues due to the oxidation of iodide. In contrast, tin-based perovskites exhibit no inherent instability. Once isolated from water and oxygen, tin-based perovskites prove to be more stable than lead-based perovskites. With this in mind, it is imperative to focus on developing tin as a lead-free alternative for the future of perovskites.
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International Conference on Hybrid and Organic Photovoltaics
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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
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