Current directions for thermophotonic heat pumps and heat engines
Room 308 (Level 3 South)
Semiconductor light emitters and solar cells are approaching a stage where their reciprocity and thermodynamics reveal new possibilities for optical refrigeration and thermal energy harvesting. Our studies suggest that III-V materials already allow local cooling upon light emission. However, harnessing the effect for practical applications necessitates still better quantitative understanding of the material and device properties as well as new solutions for thermal insulation, current spreading and light management. Here, we overview the main possibilities for optical heat pumps and waste heat energy harvesting, and discuss selected challenges in developing the devices.
Aalto Univ. School of Science (Finland)