Organic-inorganic hybrid compounds based on lead halide units: Preparation from melts and through grinding effects

Abstract

Organic-inorganic hybrid compounds based on lead halide units of the formula (CH3NH3)2- (CH3C6H 4CH2NH3)2Pb3(Br xY1-x)10 (Y = Cl, I) were prepared from melts, and their optical absorption as well as photoluminescence spectra, before and after grinding the compounds, were investigated. The luminescence of the materials after grinding is strong and is observed with naked eye. By changing the mole fraction (x), the strong photoluminescence in the range from ca. 400 nm to ca. 600 nm could be tuned. These effects indicate that the hybrid compounds are promising materials for potential applications. © 2010 Verlag der Zeitschrift für Naturforschung, Tübingen.