材料科学
吸收(声学)
太阳能电池
能量转换效率
太阳能
半径
等离子体子
光电子学
热的
光学
光热治疗
太阳能电池效率
芯(光纤)
纳米颗粒
纳米结构
等离子太阳电池
纳米技术
聚合物太阳能电池
复合材料
物理
气象学
生物
计算机科学
计算机安全
生态学
作者
Xing Liu,Ruipeng Wang,Yuan Ha,Zhimin Li
出处
期刊:Applied Optics
[The Optical Society]
日期:2023-06-22
卷期号:62 (19): 5195-5195
摘要
Achieving high solar energy absorption based on nanofluids (NFs) needs further study in solar photothermal conversion technology. In this work, we performed COMSOL simulations to investigate the solar energy absorption using a core-shell nanostructure composed of the Au core and shell with different materials. The influence of the radius of the Au core, the materials of the shell, and the shell thickness on the solar absorption efficiency factor (SAEF) are systematically studied. The results show that the SAEF of the Au@Li nanoparticle with ratio of 0.5 has the highest SAEF of 1.4779, increasing 1.99 times compared to that of the bare Au nanoparticle of 0.74326 with the same radius. Moreover, the optical properties, electric field distribution, and SAEF of the Au@Li dimer are further evaluated to demonstrate the aggregation effects on SAEF. We find that the SAEF of the Au@Li dimer reaches the maximum of 4.34 with a distance around 1 nm, where the LSPR coupling effect in the nanogap is sharply enhanced 700 times irradiated by light with wavelength of 760 nm. Finally, the direct absorber solar collector performance demonstrates that Au@Li dimer NFs can collect 93% of solar energy compared to 54% for Au@Li NFs and 51% for Au NFs. This work provides the possibility to achieve more efficient solar thermal conversion, and may have potential applications in efficient solar energy harvesting and utilization.
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