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Recent work has experimentally demonstrated that heated infrared light-emitting diodes can absorb lattice heat to generate photons above unity efficiency. We present new record-high conversion efficiencies and use these sources for absorption spectroscopy at 2.5µm.
We present a microscopic model of the Seebeck effect based on a generalized drift–diffusion equation and use it to predict a simple relationship between the electric field within an operating thermoelectric and the scattering parameter. Our model replicates existing theoretical results and permits an intuitive spatial picture of the Seebeck effect. A similar formalism was independently developed by...
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