【摘要】 在室温条件下利用溅射Ta2O5靶材的方法制备了Ta2O5薄膜,并采用将薄膜两侧的反射率光谱进行比较的简便方法分析评估薄膜的光吸收,发现溅射制备薄膜的额外光吸收源是溅射引起的缺氧形成的,选择适当的溅射功率和含氧比例的工作气体能有效地消除这些缺陷、不用任何加温处理就可制备得到表面平坦和高致密度的高品质Ta2O5薄膜.更多还原

【Abstract】 Ta2O5 films were deposited at room temperature by radio frequency(RF) sputtering with the target of bulk Ta2O5,in Ar or Ar-O2 mixture atmosphere. The reflectivity spectra measured from two sides of a film are compared to evaluate the optical absorption of the film. It is found that the excess optical absorption arises from deficiency in oxygen during sputtering. These defects can be eliminated effectively by selecting adequate Ar-O2 mixture and power for sputtering,and unabsorbing Ta2O5films with compactness and smoothness can be obtained without annealing.更多还原