A New Route for Caesium Lead Halide Perovskite Deposition

Abstract Inorganic metal halide perovskites are relevant semiconductors for optoelectronic devices. In this work the successful deposition of thin films of CsPbBr3 and CsPbCl3 have been obtained by Radio-Frequency magnetron sputtering. A detailed photoluminescence (PL) spectroscopy study of the as-grown samples was conducted at the macro and micro scale in a wide temperature range (10-300 K) to fully characterize the PL on sample areas of square centimeters, to assess the origin of the inhomogeneous broadening and to quantify the PL quantum yield quenching. Our results prove that this technique allows for the realization of high quality nanometric films with controlled thickness of relevance for optoelectronic applications.