Intersubband thermophotovoltaics

Template-Stripped Plasmonic Films for Thermophotovoltaics

Summary: Template stripping is a simple and versatile process for creating smooth patterned films from various materials. We will discuss improved plasmonic performance for template-stripped metals and their use in thermophotovoltaic applications. Introduction: Template stripping utilizes the fact that coinage metals (e.g., silver, gold, and copper) will wet certain substrates but adhere poorly...

Intersubband-transition-induced phase matching.

We suggest the use of the refractive-index changes associated with the intersubband transitions in quantum wells for phase matching in nonlinear materials. An improvement in the conversion efficiency of mid-IR second-harmonic generation by almost 2 orders of magnitude over non-phase-matched bulk GaAs is predicted. We also show that the linear phase contributions of intersubband transitions used...

Device Physics of Intersubband Lasers

Quantum theory of intersubband polarons

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Thermophotovoltaics with spectral and angular selective doped-oxide thermal emitters.

Deliberate control of thermal emission properties using nanophotonics has improved a number of applications including thermophotovoltaics (TPV), radiative cooling and infrared spectroscopy. In this work, we study the effect of simultaneous control of angular and spectral properties of thermal emitters on the efficiencies of TPV systems. While spectral selectivity reduces sub-bandgap losses, ang...