The Structural and Optical Properties of Perovskite Thin Films

Emine Guneri and Nilgun Kalaycıoglu Ozpozan
Education Faculty, Erciyes University, Turkey

Abstract

In this study, optical and structural properties of RbxGeyBr3 perovskite material were investigated. Perovskite is a mineral in the category of oxide minerals with a crystal structure of ABX3. Perovskite materials have many interesting properties such as modulation of the optical band gap and properties of quantum wells. Electronically semiconductor perovskite materials have broad spectral absorption ranging from 350 nm to 780 nm and provide more detection of the UV-Vis range of the electromagnetic wave spectrum. In addition, they have a stable structure. For these reasons, perovskites have attractive properties for optoelectronic devices. Additonally, the structural and optical properties can be changed by means of trace amounts of foreign atoms doped into semiconductor materials. The one of semiconductor commanly used is also Germanium (Ge). This element constitutes the source of circuit elements such as diodes and transistors, which are widely used in electronics. In this study, the effect of ribudium (Rb) metal, one of the alkali metals doped in different mole ratios, on the structural and optical properties of RbxGeyBr3 thin films was investigated. While the structural properties of the obtained films were determined using DTA/TG/DSC, XRD, FESEM and EDX characterization methods, optical properties were determined by UV-Vis-NIR spectrophotometer.

Presentation