Performance analysis of nanostructured Peltier coolers

Abstract

Employing non-equilibrium quantum transport models, we investigate the details and operating conditions of nano-structured Peltier coolers embedded with an energy filtering barrier. Our investigations point out non-trivial aspects of Peltier cooling which include an inevitable trade-off between the cooling power and the coefficient of performance, the coefficient of performance being high at a low voltage bias and subsequently deteriorating with increasing voltage bias. We point out that there is an optimum energy barrier height for nanowire Peltier coolers at which the cooling performance is optimized. However, for bulk Peltier coolers, the cooling performance is enhanced with the height of the energy filtering barrier. Exploring further, we point out that a degradation in cooling performance with respect to bulk is inevitable as a single moded nanowire transitions to a multi-moded one. The results discussed here can provide theoretical insights for optimal design of nano Peltier coolers.

References in corpus (3)

• Finding the quantum thermoelectric with maximal efficiency and minimal entropy production at given power output
• Incoherent scattering can favorably influence energy filtering in nanostructured thermoelectrics
• Optimized Peltier cooling via an array of quantum dots with stair-like ground-state energy configuration

Cited by in corpus (12)

• Robust all-electrical topological valley filtering using monolayer 2D-Xenes
• Role of dephasing on the conductance signatures of Majorana zero modes
• Three terminal vibron coupled hybrid quantum dot thermoelectric refrigeration
• Proposal for a graphene based nano-electro-mechanical reference piezoresistor
• Momentum relaxation effects in 2D-Xene field effect device structures
• A realistic non-local heat engine based on Coulomb coupled systems
• Realistic non-local refrigeration engine based on Coulomb coupled systems
• Thermoelectric figure of merit enhancement in dissipative superlattice structures
• Enhanced thermoelectric performance actuated by inelastic processes in the channel region
• Thermometry in dual quantum dot set-up with staircase ground state configuration
• A non-local cryogenic thermometer based on Coulomb-coupled systems
• Proposal for a solid-state magnetoresistive Larmor quantum clock