Reproducing simulations in "High efficiency rare-earth emitter for thermophotovoltaic applications"
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Abstract
In this presentation we use the Thermophotonic Selective Emitter Simulation tool in nanoHUB to reproduce results of the paper "High efficiency rare-earth emitter for thermophotovoltaic applications" published in Applied Physics Letters. The paper abstract is below.
In this work, we propose a rare-earth-based ceramic thermal emitter design that can boost thermophotovoltaic (TPV) efficiencies significantly without cold-side filters at a temperature of 1573K (1300 C). The proposed emitter enhances a naturally occurring rare earth transition using quality-factor matching, with a quarter-wave stack as a highly reflective back mirror, while suppressing parasitic losses via exponential chirping of a multilayer reflector transmitting only at short
wavelengths. This allows the emissivity to approach the blackbody limit for wavelengths overlapping with the absorption peak of the rare-earth material, while effectively reducing the losses associated with undesirable long-wavelength emission. We obtain TPV efficiencies of 34% using this layered design, which only requires modest index contrast, making it particularly amenable to fabrication via a wide variety of techniques, including sputtering, spin-coating, and plasma-enhanced chemical vapor deposition
Bio
Enas Sakr and Zhiguang Zhou, graduate students, Electrical and Computer Engineering at Purdue University. Peter Bermel, Electrical and Computer engineering at Purdue University.
References
- Enas Sakr, Zhiguang Zhou, and Peter Bermel, "High efficiency rare-earth emitter for thermophotovoltaic applications," App. Phys. Lett., 105, 111107 (2014). DOI:http://dx.doi.org/10.1063/1.4895932
- Peter Bermel, Michael Ghebrebrhan, Walker Chan, Yi Xiang Yeng, Mohammad Araghchini, Rafif Hamam, Christopher H. Marton, Klavs F. Jensen, Marin Soljačić, John D. Joannopoulos, Steven G. Johnson, and Ivan Celanovic, "Design and global optimization of high-efficiency thermophotovoltaic systems," Opt. Express 18, A314-A334 (2010).
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