[BNC-grads-list] Today's Coffee Hour in Birck Atrium

[Aveek Dutta]

Dear all,


We are resuming our coffee hour sessions from today. Please join us in the Birck Atrium at 3:30pm. Today's presentation details:


Presenter: Enas Sakr

Title: Spectral and angular-selective thermal emission from gallium-doped zinc oxide thin film structures

Abstract: Constraining thermal emission to targeted directions and optical wavelengths can potentially improve a broad range of applications, including lighting and thermophotovoltaics. In this work, we demonstrate both types of control using a gallium-doped zinc oxide thin film, a high contrast grating and an omnidirectional dielectric mirror. A factor of 20 improvement in performance for a thermophotovoltaic application can be achieved over a typical blackbody emitter by combining a 43% increase in view factor and a 14x enhancement in frequency selectivity, assuming a Si PV converter five widths away from the same width emitter in 2D at 1573 K.


Regards,


Aveek Dutta

Graduate Research Assistant

Birck Nanotechnology Center

Department of Electrical and Computer Engineering

Purdue University
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