Near-field radiative heat transfer enhancement by multilayers and gratings in the thermophotovoltaic system  

作　　者：XU ZhiGuo HU ZhiFang 

机构地区：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Science China(Technological Sciences)》2023年第10期2968-2977,共10页中国科学（技术科学英文版）

基　　金：the National Natural Science Foundation of China(Grant No.52276075);the Natural Science Foundation of Shanghai(Grant No.21ZR1433500)。

摘　　要：The near-field effect can be used to improve the output power of the near-field thermophotovoltaic device(NTPV).The nearfield radiative heat transfer in the near-field thermophotovoltaic device can be enhanced by the excitation of hyperbolic modes and the coupling of surface plasmon polaritons.In this study,we design a two-body near-field thermophotovoltaic system based on hyperbolic metamaterial.The multilayer structure on the emitter is composed of Ga-doped ZnO(GZO)and hafnium dioxide(HfO2).The gratings are on the InAs photovoltaic cell.Fluctuational electrodynamics and rigorous coupled-wave method are employed to calculate radiative heat transfer.It is found that the NTPV system with multiple microstructures performs better than the NTPV system just with single micro-structures.This NTPV system performs better in a wider vacuum gap.The output power and efficiency are enhanced by the GZO-HfO2surface plasmon polaritons in multilayer structure.The gratings can monitor the spectral heat flux to match the cell band gap to enhance the performance of the near-field thermophotovoltaic system.This investigation provides a novel approach for improving the output power of a two-body near-field thermophotovoltaic system.

关 键 词：near-field radiative heat transfer THERMOPHOTOVOLTAICS MULTILAYER surface plasmon polariton output power 

分 类 号：TN15[电子电信—物理电子学]