Growth, optical and electrical characterization of HgBr1.16I0.84 single crystals

HgBr1.16I0.84 is a ternary compound, corresponding to the stoichiometry 58 mol% HgBr2, 42 mol % HgI2 and it could be as promising for detection applications as α-HgI2. Crystals of HgBr1.16I0.84 were grown from the melt by the Bridgman-Stockbarger method. The crystals were characterized optically by transmission measurements in their fundamental energy gap region and electrically, by measuring the ln(σ)-1000T characteristic in the 260–360 K region. Also I-V characteristics were obtained at room temperature. Finally, the conductivity type was determined by the thermal electromotive force (EMF) method.