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AI-designed Si–Ge superlattices push the boundaries of thermal transport
Publication in npj Computational Materials! Controlling heat flow in nanostructures is crucial for digital technologies, AI, and power electronics, but the vast number of possible architectures makes optimization difficult. By combining quantum simulations with artificial intelligence, we have demonstrated that the local arrangement of layers in silicon–germanium (Si–Ge) superlattices strongly influences thermal transport. At the nanoscale, heat is carried mainly by phonons—v
Quantum modeling of electron-hole dissociation at the donor-acceptor interface in an organic solar cell
Publication in Physical Review Applied! Electron-hole pairs in organic photovoltaics are known to dissociate efficiently despite a Coulomb binding energy that exceeds thermal energy, a behavior that remains only partially understood. While previous studies have highlighted the role of electron-phonon interactions and nonequilibrium effects, a clear and physically transparent picture of the dissociation mechanism is still lacking. In this work, we investigate this problem usin
Machine learning method applied to optimization of cooling nanodevices
Publication in Scientific Reports! Cooling devices grounded in solid-state physics are promising candidates for integrated-chip...
Electron cooling behavior in cascading semiconductor double-quantum-well structures
Publication in Physical Review Applied ! We investigate evaporative electron cooling in cascading semiconductor double-quantum-well (QW)...
Selective energy filtering in a multiple-quantum-well nanodevice: the quantumcascade cooler
Publication in Physical Review Applied! Using quantum transport simulations, we study the operating principle of a proposed quantum...
Solar Refrigeration Based on Impact Ionization in a Transition Metal Dichalcogenides Superlattice
Publication in The Journal of Physical Chemistry C! Optical refrigeration of a semiconductor generally requires a laser excitation very...
Temperature-induced revolving effect of electronic flow in nanostructures: new opportunity for heat
Publication in Physical Review Applied! We theoretically report a remarkable revolving effect of electron flow when applying a lattice...
How coherence is governing diffusion heat transfer in amorphous solids?
How coherence is governing diffuson heat transfer in amorphous solids?Publication in Npj Computational Materials!
One step closer to the mythical hot carrier solar cell
Publication in Physical Review Applied! This theoretical work shows that an ultrathin solar cell, in this case made of a 12nm InGaAs...
What is the coherence time of phonons?
Publication in Physical Review Letters! In this work, we propose a general heat conduction formalism supported by theoretical arguments
A deep analysis of electron evaporation in semiconductor nanocoolers
Publication in Physical Review Applied! Our model is capable of calculating the electron temperature and electrochemical potential inside
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