Sediment

Raman spectroscopy

Engineering

Biology

Materials science

Deposition (geology)

Perovskite (structure)

Photoluminescence

Inorganic chemistry

Chemical engineering

Spin coating

Iodide

Paleontology

Thermodynamics

Physics

Nanotechnology

Organic chemistry

Optics

Thin film

Evaporation

Analytical Chemistry (journal)

Chemistry

Optoelectronics

Sputtering

Scientific Reports

In the last few years, research on dye-sensitised devices has been focused on the development of solar cells, based on CH 3 NH 3 PbX 3 (X = I − , Br − , Cl − ) composites with perovskite structure. The deposition of perovskite thin films is usually carried out by solution-based processes using spin-coating 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 CH 3 NH 3 PbI 3 , based on a radio-frequency (rf) -sputtering technique that results in a high reproducibility of the films and is compatible with roll-to-roll 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 (CH 3 NH 3 I). The conversions to PbI 2 and CH 3 NH 3 PbI 3 were confirmed by elemental analyses, absorption, and photoluminescence spectroscopy. Structural properties were revealed by X-ray diffraction and infrared and Raman spectroscopy.

Perovskite Thin Film Synthesised from Sputtered Lead Sulphide