Spectral selectivity from resonant-coupling in microgap-TPV

A. Meulenberg; K. P. Sinha

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arXiv · 0911.0860

Spectral selectivity from resonant-coupling in microgap-TPV

A. Meulenberg·K. P. Sinha

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Abstract

Near-field energy coupling between two surfaces may arise from frustrated total-internal-reflectance and from atomic dipole-dipole interaction. Such an exchange of energy, if at resonance, greatly enhances the radiation transfer between an emitter and a photovoltaic converter. Computational modeling of selected, but realizable, emitter and detector structures and materials shows the benefits of both near-field and resonance coupling (e.g., with ~ 100nm gaps). In one sense, this is almost an engineering paper. A strong computational model (based on physically-proven concepts and incorporating known and predicted high-temperature properties of acceptable emitter materials) is used to demonstrate the potential of materials (properly-selected to overcome natural limitations) and of structures (carefully crafted to push the limits of present technology) for breaking barriers of thermal conversion at lower-emitter temperatures (< 1000C).

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A. Meulenberg, K. P. Sinha. 2009-11-04. Spectral selectivity from resonant-coupling in microgap-TPV. https://arxiv.org/abs/0911.0860

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