Ultra-high-temperature photonics: a materials' screening perspective

In this talk I will present our recent progress towards identifying and testing materials that are suitable for high-temperature photonics. First, I will provide an overview of our materials’ screening approach with >2,800 material combinations with melting point >2,000 oC to identify optical emitters that enable thermophotovoltaics with power conversion efficiency >50%. Second, we analyze the performance of SiC/AlN option, where we found this material combination to be stable up to 1,200 oC in air and 1,500 oC in inert environments, using in situ high-temperature optical measurements. Third, I will show how primary colors can be achieved by using refractory metals and their oxides, including a detailed characterization of their optical response.