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Type: Artigo
Title: Perovskite thin film synthesised from sputtered lead sulphide
Author: Silva Filho, José Maria Clemente da
Ermakov, Viktor A.
Marques, Francisco Chagas
Abstract: In the last few years, research on dye-sensitised devices has been focused on the development of solar cells, based on CH3NH3PbX3 (X = I-, Br-, Cl-) composites with perovskite structure. The deposition of perovskite thin films is usually carried out by solution-based processes using spincoating techniques that result in the production of high quality films. Solar cells made by this method exceed 20% efficiency, with the potential for use in large scale production through ink print or screen printing techniques. As an alternative route, perovskite thin films can be deposited through thermal evaporation. A new method is proposed to produce CH3NH3PbI3, based on a radio-frequency (rf) -sputtering technique that results in a high reproducibility of the films and is compatible with roll-toroll processes. We deposited thin films of lead-sulphide (PbS) and converted them into perovskite by placing the films in an iodine atmosphere, followed by dipping in a solution of methylammonium iodide (CH3NH3I). The conversions to PbI2 and CH3NH3PbI3 were confirmed by elemental analyses, absorption, and photoluminescence spectroscopy. Structural properties were revealed by X-ray diffraction and infrared and Raman spectroscopy.
Subject: Chumbo
Células solares
Country: Reino Unido
Editor: Nature Publishing Group
Rights: aberto
Identifier DOI: 10.1038/s41598-018-19746-8
Date Issue: 2018
Appears in Collections:IFGW - Artigos e Outros Documentos

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