Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO20)
Publication date: 25th November 2019
Mesoporous titanium oxide (mp-TiO2) thin films are commonly used as electrodes for electron transport in perovskite solar cells. TiO2 presents great advantages such as high optical and thermal stability, non-toxicity and low-cost. However, to improve the performance of these devices, further investigations are required to engineer the mp-TiO2-perovskite interface.
Plasma technology presents a good alternative for the design and fabrication of mp-TiO2 with tailored properties. In this work, we present results on a novel methodology for the synthesis of ultra porous supported mp-TiO2 thin films by combined remote plasma-assisted vacuum deposition and surface plasma treatments at low or room temperature. The obtained films are completely transparent, antireflective and present porosity values as high as φ > 80%. Besides, their open-porous interconnected structure can be easily infiltrated with perovskite light harvesters by vacuum or chemical procedures for the fabrication of solar cells. In this communication, we will show the first results about the use of these films as electrodes in perovskite solar cells comparing the cell performances with reference cells synthesized by spin-coating.
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