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Title: Air-Bridge Cells for Higher Emission Temperatures
Interest in thermal batteries for inexpensive grid-scale storage of renewable energy motivates the development of photovoltaics that efficiently convert very high temperature thermal emission to electrical energy. We have previously shown that InGaAs air-bridge cells can increase TPV efficiency by −30% compared to cells with more conventional back surface reflectors. In this study, we design and experimentally characterize airbridge cells with wider bandgaps for applications at higher emission temperatures. Parametric studies with varying bandgap and emitter temperature identify high performance regimes. At temperatures up to 2000K, predicted device efficiencies of single-junction air-bridge cells match that of record-holding multi-junction cells. Furthermore, a novel platform for device testing using porous graphite emitters is designed and experimentally demonstrated.  more » « less
Award ID(s):
2144662
PAR ID:
10483741
Author(s) / Creator(s):
; ; ; ; ;
Publisher / Repository:
IEEE
Date Published:
Journal Name:
2023 IEEE 50th Photovoltaic Specialists Conference (PVSC)
ISBN:
978-1-6654-6059-0
Page Range / eLocation ID:
1 to 3
Format(s):
Medium: X
Location:
San Juan, PR, USA
Sponsoring Org:
National Science Foundation
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