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Silver–Carbon-Nanotube Metal Matrix Composites for Metal Contacts on Space Photovoltaic Cells

机译:用于空间光伏电池上金属触点的银碳纳米管金属基复合材料

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In this paper, multiwalled carbon nanotubes are being investigated for mechanical reinforcement of metal contacts on inverted metamorphic multijunction solar cells. We have focused on a silver–carbon-nanotube layer-by-layer microstructure for this study. The silver layer is electrodeposited, and the carbon nanotube layer is deposited by various methods, including electrodeposition, nanospreading, and drop casting. To increase the adhesion strength to metal and achieve efficient metal nanotube stress transfer, carbon nanotubes are chemically functionalized with carboxylic or amine groups prior to deposition. The metal–carbon-nanotube composites are characterized mechanically and electrically through nanoindentation and strain failure tests. The strain failure tests show that the conductivity can be maintained up to 42-μm-wide microcracks in the composite layer, where the carbon nanotubes bridge the gap.
机译:在本文中,正在研究多壁碳纳米管用于机械增强倒置变质多结太阳能电池上的金属接触。在这项研究中,我们重点研究了银碳纳米管的逐层微观结构。电沉积银层,并通过各种方法沉积碳纳米管层,包括电沉积,纳米扩散和滴铸。为了增加对金属的粘合强度并实现有效的金属纳米管应力转移,在沉积之前,用羧基或胺基化学官能化碳纳米管。金属-碳纳米管复合材料通过纳米压痕和应变破坏测试进行机械和电气表征。应变破坏测试表明,在碳纳米管弥合间隙的复合层中,电导率可以维持高达42μm宽的微裂纹。

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