Photonic Curing for Emerging Photovoltaic Absorbers.
Giulia Longo a, Udari Wijesinghe a, Will Tetlow a, Oliver S. Hutter a
a Northumbria University, 302 Whynne Jones Building, Newcastle Upon Tyne, United Kingdom
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
#NextGenSolar - Innovations beyond ABX3 perovskites: Materials development, Photophysics, and Devices
Barcelona, Spain, 2024 March 4th - 8th
Organizers: Silvia Motti and Marcello Righetto
Oral, Giulia Longo, presentation 169
DOI: https://doi.org/10.29363/nanoge.matsus.2024.169
Publication date: 18th December 2023

Solar cells are among the most developed technologies in the renewable energy sector, not only academically, but also commercially. In this context, thin-film photovoltaics (based on emerging absorbers like perovskites, Sb2Se3, CZTS etc.) provide an excellent opportunity to expand the reach of solar energy production, thanks to the promising efficiencies combined with light-weight and flexibility. However, for many of these emerging materials, moderate/high temperature annealing (150-300 °C) is required, and the necessary temperature often limits the usable substrates. Photonic curing (also known as flash annealing) could represent a way to overcome this limitation and really unlock the potential of thin film photovoltaics. In this technique, heat is created by the absorption of strong and ultrarapid light flashes that permits to reach very high temperature on the top layer while keeping cold the bottom of the substrate. While this technique has widely been used in silicon,[1] very few reports are present for these emerging materials (mainly on perovskites), [2-4], and fundamental investigation is still missing.

In this talk I will present the most recent results collected on the use of photonic curing on different thin film absorbers, analyzing the structural, morphological and optoelectronic properties and comparing it with traditional thermal annealing.

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