Laser cooling of a semiconductor material, in which heat is extracted by emitting photons, requires a near-perfect external radiative efficiency. In this theoretical work, we propose a cooling system based on carrier extraction in a large gap reservoir.
We theoretically report a remarkable revolving effect of electron flow when applying a lattice temperature gradient across an asymmetric double-barrier heterostructure.
The first physical GELATO meeting has been held in Marseille the 24th and 25th of November 2022.
We had the chance to welcome all the GELATO partners. In particular, Prof. Hirakawa and his colleagues specially came from Tokyo!
Representation of the semiconductor refrigerant heterostructure
Schematic diagram for the heat flow in the electron-lattice system
Based on full quantum-transport simulations, we report a comprehensive study of the evaporative cooling process in a double-barrier semiconductor heterostructure thermionic refrigerator. Our model, which self-consistently solves the nonequilibrium Green’s function framework and the heat equation, is capable of calculating the electron temperature and electrochemical potential inside the device.
We investigate electron transport in asymmetric double-barrier AlGaAs/GaAs thermionic cooling heterostructures (Fig.1). Measurements of temperature-dependent current-voltage characteristics confirm that the dominant electron trans
The official GELATO kick-off meeting has been held online the 25th of November 2021.
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