首页> 外文期刊>Nanotechnology >Control of optical bandgap energy and optical absorption coefficient by geometric parameters in sub-10nm silicon-nanodisc array structure
【24h】

Control of optical bandgap energy and optical absorption coefficient by geometric parameters in sub-10nm silicon-nanodisc array structure

机译:亚纳米10nm硅纳米阵列结构中的几何参数控制带隙能量和光吸收系数

获取原文
获取原文并翻译 | 示例
           

摘要

A sub-10nm, high-density, periodic silicon-nanodisc (Si-ND) array has been fabricated using a new top-down process, which involves a 2D array bio-template etching mask made of Listeria-Dps with a 4.5nm diameter iron oxide core and damage-free neutral-beam etching (Si-ND diameter: 6.4nm). An Si-ND array with an SiO _2 matrix demonstrated more controllable optical bandgap energy due to the fine tunability of the Si-ND thickness and diameter. Unlike the case of shrinking Si-ND thickness, the case of shrinking Si-ND diameter simultaneously increased the optical absorption coefficient and the optical bandgap energy. The optical absorption coefficient became higher due to the decrease in the center-to-center distance of NDs to enhance wavefunction coupling. This means that our 6nm diameter Si-ND structure can satisfy the strict requirements of optical bandgap energy control and high absorption coefficient for achieving realistic Si quantum dot solar cells.
机译:使用新的自上而下的工艺制造了低于10nm的高密度周期性硅纳米(Si-ND)阵列,该阵列涉及由直径为4.5nm的李斯特菌-Dps制成的2D阵列生物模板蚀刻掩模氧化铁芯和无损中性束蚀刻(Si-ND直径:6.4nm)。具有SiO _2基体的Si-ND阵列由于其Si-ND厚度和直径的微调性而显示出可控的光学带隙能量。与缩小Si-ND厚度的情况不同,缩小Si-ND直径的情况同时增加了光吸收系数和光学带隙能量。由于ND的中心到中心距离的减小,光吸收系数变得更高,从而增强了波函数耦合。这意味着我们直径为6nm的Si-ND结构可以满足光带隙能量控制和高吸收系数的严格要求,以实现逼真的Si量子点太阳能电池。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号