Thermophotovoltaic Efficiency Enhancement through Metamaterial Selective Emitters

Applying thermophotovoltaics (TPV) to present energy production technologies allows us to increase energy output while utilizing existing infrastructure by reclaiming the heat lost during the production process. In order to maximize the efficiency of these sources, the conversion efficiency of the TPV system needs to be optimized. Using metamaterials, we have created selective emitters that tailor the incident light spectrum to the band gap of specific diodes, offering the potential to reduce diode heating and increase efficiency. Usage of metals such as platinum and molybdenum makes the emitters able to withstand the high temperatures required to create ideal spectra for III-V cells. Simulations from CST Microwave Studio were used in the design process and testing of the emitters includes heat tests and SEM analysis.

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