Enhanced spectral splitting in a novel solar spectrum optical splitter based on one dimensional photonic crystal heterostructure

Journal of Materiomics

卷:7

Zuoxu Wu¹  Xingjun Liu²  Qian Zhang²  Jian Wang³  Dong Wei³  Qingmei Wang³  Yijie Liu³  Feng Cao³ 

[1] Corresponding author.;

[2] Department of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Guangdong, 518055, China;

[3] School of Science, and Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology, Shenzhen, Guangdong, 518055, China;

关键词: Solar spectral splitting;    1D photonic crystal heterostructure;    Solar absorptance;    Effective impedance;   

DOI  :  

来源: DOAJ

【 摘 要 】

Controlling the distribution of solar spectrum in different bands would boost the energy harvesting efficiency and optimize the energy dispatchability. 1D photonic crystal with intrinsic optical band gap can be used to split the solar spectrum for hybrid photovoltaic/thermal solar applications. Here, we designed an efficient solar spectrum optical filter based on a cermet layer, Si/SiO2 1D photonic crystal, and top heterostructure layer. Compared with 1D photonic crystal structure, the 1D photonic crystal heterostructure with top YSZ layer can realize the reflectance of greater than 92% in PV band and the low average reflectance in two thermal bands by tuning the effective impedance of multilayer films. The enhanced reflectance in PV band results from the huge mismatching of impedance between free space and the heterostructure structure. The top dielectric layer can also be extended to other oxides.

【 授权许可】

Unknown