Perovskite Thin Film Synthesised from Sputtered Lead Sulphide

Autor(es)

Clemente da Silva Filho, Jose Maria ^[1] ; Ermakov, Viktor A. ^[1] ; Marques, Francisco Chagas ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Phys Gleb Wataghin, 777 Sergio Buarque de Holanda St, BR-13083859 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 8, JAN 24 2018.
• Citações Web of Science: 11

Resumo

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. (AU)

• Processo FAPESP: 12/10127-5 - Pesquisa e desenvolvimento de materiais nanoestruturados para aplicações eletrônicas e de física de superfícies
• Beneficiário: Fernando Alvarez
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/26385-6 - Desenvolvimento e estudo de nanopartículas geradoras de múltiplos éxcitons e efeito plasmônico para células solares
• Beneficiário: Viktor Ermakov
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado