Potential applications of hierarchical branching nanowires in solar energy conversion
Potential applications of hierarchical branching nanowires in solar energy conversion
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DOI：
10.1039/b912095e
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发表时间：
2009-01-01
影响因子：
32.5
通讯作者：
Jin, Song
中科院分区：
文献类型：
--
作者：
Bierman, Matthew J.;Jin, Song
纳米科学和纳米技术可以通过将新颖的纳米级特性与加工性和低成本相结合，为光伏和光电化学应用提供许多好处。利用高质量、高效率、低成本的纳米材料，有可能为拟议的第三代太阳能技术提供新的变革性方法。纳米线是有趣的，因为它们具有长轴来吸收入射的太阳光，但具有短的径向距离来分离光生载流子。从这个角度来看，我们进一步建议，更“复杂”的纳米结构，无论是在层次分支/超支化纳米线结构的形式，并在不同材料的多组分纳米线异质结构的形式，是潜在的太阳能收集和转换更感兴趣。综述了自下而上的合成技术在纳米线中引入分支以形成分级纳米线结构。几个潜在的战略，将其纳入太阳能转换装置进行了讨论，并确定了一些基本问题和未来的发展方向。
Nanoscience and nanotechnology can provide many benefits to photovoltaic and photoelectrochemical applications by combining novel nanoscale properties with processability and low cost. Taking advantage of high quality, high efficiency, yet low cost nanomaterials could potentially provide the new and transformative approaches to enable the proposed generation-III solar technologies. Nanowires are interesting because they have a long axis to absorb incident sunlight yet with a short radial distance to separate the photogenerated carriers. In this perspective, we further suggest that more "complex'' nanostructures, both in the form of hierarchically branching/hyperbranching nanowire structures and in the form of multi-component nanowire heterostructures of diverse materials, are potentially even more interesting for solar energy harvesting and conversion. The common bottom-up synthetic techniques to induce branching in nanowires to form hierarchical nanowire structures are reviewed. Several potential strategies for their incorporation into solar conversion devices are discussed and some fundamental issues and future directions are identified.