Structural variation and optical properties of ZnO–LiGaO2 pseudo-binary system

The structural variation in the x(LiGaO2)1/2(1−x)ZnO alloy system was studied by powder XRD, TEM-SAD and Raman spectroscopy. It was elucidated that the phase varied upon increasing the alloying level was the wurtzite-type for 0≤x<0.2, the Zn2LiGaO4-type for 0.2≤x≤0.5 and the β-LiGaO2-type for 0.8≤x≤1, and the 0.5

Graphical abstractThe structure of ZnO varied upon alloying with LiGaO2.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We studied structural variation in the x(LiGaO2)1/2(1−x)ZnO alloy system. ► The wurtzite- and its related Zn2LiGaO4-type phase appeared for 0≤x≤0.5. ► The solubility limit of LiGaO2 in ZnO was related to the wurtzite c0/a0 ratio. ► The energy band gap of ZnO was widened up to 4.04 keV by the alloying with LiGaO2. ► The bowing parameter of y(Zn2LiGaO4)1/4(1−y)ZnO was determined to be 0.67 eV.