...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Materials >Direct Growth of Highly Mismatched Type II ZnO/ZnSe Core/Shell Nanowire Arrays on Transparent Conducting Oxide Substrates for Solar Cell Applications
【24h】

Direct Growth of Highly Mismatched Type II ZnO/ZnSe Core/Shell Nanowire Arrays on Transparent Conducting Oxide Substrates for Solar Cell Applications

机译：高度不匹配的II型ZnO / ZnSe核/壳纳米线阵列在太阳能电池应用的透明导电氧化物衬底上的直接生长

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A number of nanometer-scale photovoltaic (PV) concepts based on semiconductor nanowires have been developed or proposed in recent years, with either inorganic/organic hybrid or all-inorganic approaches. The quasi-one-dimensional (quasi-1D) structure is perhaps the optimized choice for optoelectronic devices such as solar cells and photodetectors, because it allows for maximal advantage to be taken of reduced dimensionality whilst retaining the last and only needed conduction channel. Besides the possibility of exploring quantum effects at the nanoscopic scale, the quasi-1D system could be superior to the bulk material even at the mesoscopic scale, where the lateral size falls below the carrier diffusion length, for instance, by reducing the nonradiative recombination and carrier scattering loss through elimination of the unnecessary lateral transport and the resulting recombination loss. Additionally, a nanowire array constitutes a natural architecture, such as a photonic crystal, for light trapping. The charge separation of the electron and hole is a key step in the generation of solar power in a PV device. In a conventional solar cell, it is typically achieved by a planar p-n homo-junction along the path of the current flow or longitudinally. In nanometer-architecture PV devices, however, the charge separation is often facilitated by a type II or staggered energy alignment of a heterojunction, constructed from two materials for which both the valance and conduction bands of one component lie lower in energy than the corresponding bands of the other component.
机译：近年来，已经通过无机/有机混合或全无机方法开发或提出了许多基于半导体纳米线的纳米级光伏（PV）概念。准一维（quad-1D）结构可能是诸如太阳能电池和光电探测器之类的光电设备的最佳选择，因为它允许在减小尺寸的同时获得最大的优势，同时保留最后一个唯一的导电通道。除了探索纳米级量子效应的可能性外，准一维系统甚至在介观尺度上也比块状材料优越，因为在介观尺度上，横向尺寸低于载流子扩散长度，例如，通过减少非辐射复合和通过消除不必要的横向传输以及由此产生的重组损失来消除载流子散射损失。另外，纳米线阵列构成用于光捕获的自然结构，例如光子晶体。电子和空穴的电荷分离是光伏设备中太阳能发电的关键步骤。在常规的太阳能电池中，通常是通过沿电流路径或纵向的平面p-n同质结实现的。然而，在纳米体系结构的PV器件中，异质结的II型或交错能量取向通常促进电荷分离，异质结由两种材料构成，对于这两种材料，一个组分的价带和导带的能量都低于相应的带其他组件。

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