Upscalable and flexible Tin-Based Perovskites solar cells by Bladecoating technic
Jesus Alberto Sanchez Diaz a, Felipe A. Vinocour Pacheco b, Wiktor Zuraw b, Senol Oz b, Ivan Mora Sero a
a Institute of Advanced Materials (INAM), Universitat Jaume I. Av. de Vicent Sos Baynat, s/n 12006, Castelló de la Plana, Spain
b Saule Research Institute, Duńska 11, 54-427, Wrocław, Poland
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP24)
Tokyo, Japan, 2024 January 21st - 23rd
Organizers: Qing Shen and James Ryan
Oral, Jesus Alberto Sanchez Diaz, presentation 102
Publication date: 18th October 2023

Lead- based perovskite materials are a braking trough technology in the use of optoelectronics devices, which in particularly for solar cells have achieved an efficiency close to 26 % for lab scale devices. However, the toxicity of Pb to the environment and human health, hampers the commercialization of this technology. Therefore, other non-toxic elements have been employed to substitute the highly hazardous Pb in the perovskite structure. Among the candidates, tin-based perovskites (Sn-PS) are the promising alternatives for the development of highly efficient and low-cost photovoltaics based on low-toxicity materials. However, one of the main limitations for Sn-PS is the easy oxidation of Sn+2 into Sn+4 upon the exposure to ambient conditions and even during the film and device preparation, which promotes degradation mechanisms and compromises the quality and long-term stability of the material.

Besides this intrinsic challenge, most studies have focused on spin coating as the main deposition method for the absorber layer, which is not compatible with large area manufacturing techniques like roll-to-roll or sheet-to-sheet. In this work, we have successfully deposited Sn-PS films trough bladecoating technic; ink engineering of the solvent system and additives were used as a strategy to control the crystallization dynamics and nucleation to obtain pinhole-free films on flexible substrates. This strategy allows us to deposit successfully uniform FASnI3 films onto polyethylene terephthalate (PET) sheets up to 700 cm2. Our findings demonstrate how to upscale Tin-based perovskites with a simple method; thinking on how to commercialize lead-free perovskites.

We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info