当前位置: X-MOL 学术J. Materiomics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effects of nanoparticle structural features on the light-matter interactions in nanocermet layers and cermet-based solar absorbers
Journal of Materiomics ( IF 9.4 ) Pub Date : 2021-01-29 , DOI: 10.1016/j.jmat.2021.01.011
Xiaoyu Wang , Houjin He , Junhua Gao , Haibo Hu , Shiwei Tang , Xiaoyun Li , Xiuhong Li , Hongtao Cao

Metallic nanoparticle (NP)/ceramic composite cermets present desirable broadband absorption of the solar spectrum and thus are the preferred material scheme for constructing cermet-based solar absorbers. However, the effects of fine nanoparticle structural features on the light-matter interactions in nanocermet layers and corresponding cermet-based solar absorbers are still not well clear until now. Herein, we report a systematical investigation on the effects of W (tungsten) nanoparticle sizes, its concentrations and configurations in an alumina matrix on the optical responses of Wsingle bondAl2O3 nanocermet layers and a solar absorber with double-cermet layers. It is found that to possess admirable light absorption features at high temperatures, it is better to maintain the fine particle size of less than 10 nm, isolated states and suitable separations between them for Wsingle bondAl2O3 nanocermets. Thus, the dominated intrinsic absorption of W NPs, their plasmonic excitation and coupling effects among each other all contribute significantly to the broadband optical performance of the cermet layers and the whole absorber. More importantly, this study demonstrates a valuable criterion for maintaining optical performances of nanocermet layers and cermet-based solar absorbers under heating and thus their thermal robustness.



中文翻译:

纳米粒子结构特征对纳米金属陶瓷层和基于金属陶瓷的太阳能吸收器中光-物质相互作用的影响

金属纳米颗粒 (NP)/陶瓷复合金属陶瓷呈现出理想的太阳光谱宽带吸收,因此是构建基于金属陶瓷的太阳能吸收器的首选材料方案。然而,精细纳米颗粒结构特征对纳米金属陶瓷层和相应的基于金属陶瓷的太阳能吸收器中光-物质相互作用的影响直到现在还不是很清楚。在此,我们报告了对 W(钨)纳米颗粒尺寸、其在氧化铝基质中的浓度和配置对 W 单键Al 2 O 3光学响应的​​影响的系统研究纳米金属陶瓷层和具有双金属陶瓷层的太阳能吸收器。研究发现,为了在高温下具有良好的光吸收特性,W 单键Al 2 O 3纳米金属陶瓷最好保持小于10nm的细粒度、孤立状态和它们之间的适当分离。因此,W NPs 的主导本征吸收、它们的等离子体激发和彼此之间的耦合效应都对金属陶瓷层和整个吸收体的宽带光学性能有显着贡献。更重要的是,这项研究证明了在加热下保持纳米金属陶瓷层和基于金属陶瓷的太阳能吸收器的光学性能及其热稳健性的有价值的标准。

更新日期:2021-01-29
down
wechat
bug