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Double-walled carbon nanotube solar cells

机译:双壁碳纳米管太阳能电池

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We directly configured double-walled carbon nanotubes as energy conversion materials to fabricate thin-film solar cells, with nanotubes serving as both photogeneration sites and a charge carriers collecting/transport layer. The solar cells consist of a semitransparent thin film of nanotubes conformally coated on a n-type crystalline silicon substrate to create high-density p-n heterojunctions between nanotubes and n-Si to favor charge separation and extract electrons (through n-Si) and holes (through nanotubes). Initial tests have shown a power conversion efficiency of > 1%, proving that DWNTs-on-Si is a potentially suitable configuration for making solar cells. Our devices are distinct from previously reported organic solar cells based on blends of polymers and nanomaterials, where conjugate polymers generate excitons and nanotubes only serve as a transport path.
机译:我们直接将双壁碳纳米管配置为能量转换材料,以制造薄膜太阳能电池,其中碳纳米管既充当光生位点,又充当电荷载流子收集/传输层。太阳能电池由共形地涂覆在n型晶体硅衬底上的纳米管的半透明薄膜组成,以在纳米管和n-Si之间形成高密度pn异质结,从而有利于电荷分离并提取电子(通过n-Si)和空穴(通过纳米管)。初步测试表明,功率转换效率> 1%,这证明硅基DWNTs是制造太阳能电池的潜在合适配置。我们的设备与先前报道的基于聚合物和纳米材料共混物的有机太阳能电池不同,共轭聚合物可产生激子,而纳米管仅用作传输路径。

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