聚酰亚胺纳米杂化薄膜的透光率与光击穿特性

Research on transmittance and characteristics of optical breakdown of Al_2O_3/PI hybrid films

为了研究无机组分的添加对复合材料抗光击穿能力的影响,采用溶胶—凝胶法制备不同组分的Al2O3/PI复合薄膜,利用半导体激光照射不同组分的Al2O3/PI薄膜,研究其透光率、光击穿区域的形貌及不同区域的元素分布、击穿孔区的有效面积。数据分析表明:随Al2O3含量的增加,杂化薄膜的透光率、光击穿孔区的破坏程度、孔区的面积逐渐下降。实验结果表明:纳米Al2O3颗粒可以减小复合薄膜击穿孔的有效面积,从而提高复合薄膜耐击穿性。杂化薄膜的透光率可以表征其光击穿情况。

Aimed at investigating the effect of addition of inorganic content （ Al2O3 ） on the anti-opti- cal breakdown of hybrid films, this paper introduces the preparation of the A12O3/PI composition films with different content by Sol-Gel method, the irradiation of the A12O3/PI films using semiconductor laser, and the identification of the transmittance of hybrid films, the morphology of optical breakdown region, element distribution in different regions, and the effective area of optical breakdown hole. The data analy- sis show that the light transmittance of the films and the size of the breakdown hole decrease with the in- crease of A1203. The results show that the nano-A12O3 can reduce the effective area of breakdown hole in the films, thus increasing breakdown-resistance performance, and characterizing the optical breakdown situation by transmittance of hybrid films.