采用激光脉冲沉积法(PLD)在石英玻璃上成功制备了一系列MgZnO薄膜。并通过选用高Mg含量的靶材,成功将薄膜的吸收边调节至极紫外区域(200-280nm),经计算MgZnO薄膜的带隙高达5.46eV。进一步研究这种高Mg含量的MgZnO薄膜的结构特性,对薄膜进行了热退火处理,并首次观察到依赖于退火温度变化的(220)取向衍射峰的变化。
A series of MgZnO thin films have been deposited on quartz substrate by pulsed laser deposition (PIED) method. The absorption edge was tuned to deep UV region(200-280nm) using the target with high Mg content. The band gap of MgZnO films can reach 5.46eV. Thermal annealing was performed to improve the structural characteristics of MgZnO films. For the first time the unique cubic(220) orientation crystallization process with the different annealing temperature was observed.