Nanoengineered Materials for Thermoelectric Energy Conversion

摘要: In this chapter we review recent advances in nanoengineered materials for thermoelectric energy conversion. We start by a brief overview of the fundamental interactions between heat and electricity, i.e., effects. A key requirement to improve conversion efficiency is increase Seebeck coefficient (S) electrical conductivity (σ ), while reducing thermal (κ). Nanostructures make it possible modify trade-offs bulk material properties through changes density states interface effects on electron phonon transport. will experimental theoretical results superlattice quantum dot thermoelectrics, nanowires, thin-film microrefrigerators, solid-state thermionic power generation devices. latter case, latest semimetal rare-earth nanoparticles III–V semiconductor matrix as well nitride metal/semiconductor multilayers be discussed. briefly describe developments nonlinear electrically pumped optical refrigeration graded materials. It important note that, figure merit (Z = S2σ /κ ) parameter optimize, one has consider whole system an application, optimization sometimes places other constraints materials.We also challenges characterization thin film Finally, assess potential some more exotic techniques such thermotunneling bipolar