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自然界生物体所利用的纳米尺度结构被证明是一种较为理想的增黑结构。为了进一步提高普通碳材料的光捕获效率,采用最高温度为550℃的真空烧结工艺复制了蝶类复眼的纳米点阵结构,并与碳材料本身物性相耦合,从而得到了具有高效减反结构的新型超黑碳材料。对样品碳化前后的微观结构进行了表征,并测试了碳化样品的超黑性能。结果表明,复制体很好地保留了原始蝶类复眼的两级微观结构的几何学特征;并且与无结构焙烧的碳相比较,具有纳米点阵结构的碳材料对整体光的反射损失明显减少,在近紫外和可见光波段的超黑度提高明显,能够更好地减少反射以及改善光子收集效率。
Nanoscale structures utilized by organisms in nature have proven to be an ideal blackening structure. In order to further improve the light trapping efficiency of common carbon materials, a vacuum sintering process with a maximum temperature of 550 ° C was used to duplicate the nanocluster structure of a butterfly compound eye and to be coupled with the physical properties of the carbon material to obtain a highly efficient anti-retrogradation structure New super-black carbon material. The microstructures of the samples before and after carbonization were characterized and the ultra-black properties of the carbonized samples were tested. The results show that the replica well retains the geometric characteristics of the two-level microstructure of the primitive butterfly compound eye and the carbon material with the nanodialtic structure has a significant reduction in the total light reflection loss compared with the unstructured calcined carbon , The increase of super blackness in the near ultraviolet and visible light bands can be obviously reduced, the reflection can be reduced and the photon collection efficiency can be improved.