Optical Properties of Barium Borate (BaB2O4)Compound for Current Optoelectronic Applications

Ibtehag Ali Sanosy; Khalid Mohammed Haroun; Abdalsakhi Suliman Mohammed Hamed; Adam Mohammed Adam Bakheet

Abstract

In this work,Barium borate was prepared by sol-gel synthesisdepending on different molar (0.1, 0.2, 0.3 0.4 and 0.5) molar. Barium borate is an inorganic compound, and it was useda borate of barium with a chemical formula BaB2O4 or Ba(BO2)2 It is available as hydrate or dehydrated form, as white powder or colorless crystals. The optical characteristics of the prepared samples have been investigated by UV/Vis spectrophotometer in the wavelength range of (370 – 620) nmthe value of absorbance increase by Ba x increase,absorption of all sample at 467 nm (in the visible region), this means that the transition must be corresponding to a direct electronic transition. The samples have a direct allow electronic transition with optical energy (Eg) values decreased from (2.441) eV for Ba0.1B1.8O4 sample to (2.315) eV for Ba0.5B1.0O4 sample. The value oftheExtinction coefficient(K) at the visible region depended on the sample treatment method.The maximum value of (n) equal 2.153for all samples at 510 nm for and we can show that the value of (n) begins to red shift in the region of the spectrum while Ba x increase, this means that the samples become more transparent in the (510 nm) region. The results indicate the samples have good characteristics for optoelectronic applications

Abstract

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