【摘要】 研究了半导体/绝缘体复合材料的介电特性和光学吸收特性随外加场频率和半导体颗粒形状的变化规律,利用有效介质近似理论(EMA)进行数值模拟,当外加场的频率发生改变时,复合材料的介电特性有一个峰值存在,随半导体颗粒体积分数的增大,峰值也随之增强;而复合材料的光谱特性随频率的变化有两个峰值存在,随着半导体纳米颗粒的体积分数及形状的改变,相应的峰值也发生改变。更多还原

【Abstract】 This paper investigates that the characteristics of the dielectric and optics absorption of semiconductor / insulator composites depend on the frequency of applied electromagnetic field.And the effect of shape factor of Nano-granul on the properties of dielectric and spectrum is discussed.The authors find there are peaks of dielectric characteristic and the peaks′ position shift with the volume fraction and the shape factor of semiconductor Nano-granular.更多还原