排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
2.
A new type of THz waveguides, which employs a solid polyethylene rod as the core and polyethylene tubes in a periodic array of square lattice as the cladding, is proposed. Optical properties of this new THz waveguide, especially in dispersion, confinement loss and single mode property, are investigated in detail with the plane wave expansion method and the beam propagation method. Numerical results demonstrate that the new THz waveguide can reach not only low dispersion but also low confinement loss at single mode propagation. Therefore, the square lattice structure is a better candidate as THz waveguides than the triangular ones. 相似文献
3.
AZO薄膜刻蚀形貌优化及其在硅基薄膜双结太阳能电池中的应用 总被引:1,自引:0,他引:1
采用磁控溅射结合酸腐蚀法制备掺铝氧化锌透明导电氧化物薄膜,研究关键溅射工艺参数对AZO薄膜腐蚀后性能的影响.研究发现,在较低沉积温度和较大溅射压强条件下,样品腐蚀后可以形成粗糙度和雾度更大的表面形貌,有利于提高电池性能;而溅射功率增加,虽然能提升样品腐蚀后的粗糙度,但雾度的增加则呈现饱和趋势.将具有优良光电性能、不同雾度的AZO薄膜作为前电极制备非晶/微晶硅薄膜双结太阳能电池,发现雾度越大,电池的短路电流密度越大,特别是底电池电流密度越大,从而电池的光电转换效率也获得提高.这一发现有助于通过优化溅射工艺参数来改进AZO薄膜表面形貌和电池性能. 相似文献
1