Thermal Degradation of Tungsten Nanowire-Based Hyperbolic Metamaterial Emitters for Near-Field Thermophotovoltaic Applications

Design and Spectral Performance of HfO2-Based Multilayer Spectrally Selective Emitters Embedded with VO2 Nanoparticles

“…At present, most spectrally selective emitters depend on micro/nanostructures for spectral control, and they can be divided into 1D, 2D, , and 3D , photonic crystal spectrally selective emitters according to their structures. Among them, 1D or the so-called multilayer spectrally selective emitters have received much attention for their simple fabrication and are less susceptible to surface diffusion. , A multilayer spectrally selective emitter is composed of alternating dielectric and metal layers, and the spectral selectivity is generated by the interferences between the layers. , The metal layers (e.g., W and Mo) are prone to oxidation at high temperatures, , whereas the dielectric layers (e.g., HfO 2 , SiO 2 , and Al 2 O 3 ) show good thermal stability and act as protective layers for the metal layers. , However, oxidation still occurs in the multilayer W-SiO 2 emitter at 1300 K in a N 2 atmosphere .…”

“…At present, most spectrally selective emitters depend on micro/nanostructures for spectral control, 9 and they can be divided into 1D, 10 2D, 11,12 and 3D 13,14 photonic crystal spectrally selective emitters according to their structures. Among them, 1D or the so-called multilayer spectrally selective emitters have received much attention for their simple fabrication and are less susceptible to surface diffusion.…”

Micro/Nanomaterials for Heat Transfer, Energy Storage and Conversion

“…Nevertheless, we should be aware of the fact that, despite all the claimed high performance of many selective emitters, for practical applications, the long-time thermal stability at elevated temperatures (~1200K or even higher) and resistance against thermal shocks are of the most importance. Considerable attention has been paid to this subject in recent years [35][36][37]. Another promising area is the development of high-efficiency TPV cells using two-dimensional (2D) materials, for instance, van der Waals (vdW) bilayer antimonene [38] and Sb/InSe vdW heterostructure [39], while experimental works in this subject matter are yet to be conducted.…”