An integrated microcombustor and photonic crystal emitter for thermophotovoltaics

[摘要] Thermophotovoltaic (TPV) energy conversion is appealing for portable millimeter- scale generators because of its simplicity, but it relies on a high temperatures. The performance and reliability of the high-temperature components, a microcombustor and a photonic crystal emitter, has proven challenging because they are subjected to 1000-1200 C and stresses arising from thermal expansion mismatches. In this paper, we adopt the industrial process of diffusion brazing to fabricate an integrated microcombustor and photonic crystal by bonding stacked metal layers. Diffusion brazing is simpler and faster than previous approaches of silicon MEMS and welded metal, and the end result is more robust.

[发布机构] Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge; MA; 02139, United States^1;Department of Electrical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge; MA; 02139, United States^2;Sensors and Electron Devices Directorate, US Army Research Laboratory, 2800 Powder Mill Rd., Adelphi; MD; 20783, United States^3;Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge; MA; 02139, United States^4

[效力级别] 能源学

[关键词] Diffusion brazing;High temperature;High temperature components;Industrial processs;Performance and reliabilities;Thermal expansion mismatch;Thermophotovoltaic energies;Thermophotovoltaics