Kim Younggyu, Leem Jae-Young
J Nanosci Nanotechnol. 2016 May;16(5):5186-9. doi: 10.1166/jnn.2016.12267.
The structural and optical properties of the ZnO thin films grown on mica substrates for different precursor concentrations were investigated. The surface morphologies of all the samples indicated that they consisted of granular structures with spherical nano-sized crystallites. The thickness of the ZnO thin films increased significantly and the optical band gap exhibited a blue shift with an increase in the precursor concentration. It is remarkable that the highest I(NBE)/I(DLE) ratio was observed for the ZnO thin film with 0.8 M precursor concentration, even though cracks formed on the surface of this film.
研究了在云母衬底上生长的不同前驱体浓度的ZnO薄膜的结构和光学性质。所有样品的表面形貌表明它们由具有球形纳米尺寸微晶的颗粒结构组成。ZnO薄膜的厚度显著增加，并且随着前驱体浓度的增加，光学带隙呈现蓝移。值得注意的是，对于前驱体浓度为0.8 M的ZnO薄膜，即使该薄膜表面形成了裂纹，仍观察到最高的I（NBE）/I（DLE）比率。
