Tri-phase photonic crystal emitter for thermophotovoltaic systems

被引:4
|
作者
Singhal, Vidisha [1 ]
Zhu, Jie [1 ]
Song, Jiawei [2 ]
Wang, Haiyan [2 ]
Bermel, Peter [1 ]
机构
[1] Purdue Univ, Elmore Family Sch Elect & Comp Engn, W Lafayette, IN 47906 USA
[2] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47906 USA
关键词
VERTICALLY ALIGNED NANOCOMPOSITES; MGO THIN-FILMS; THERMAL-STABILITY; METAMATERIAL; DEGRADATION; GROWTH; MOCVD;
D O I
10.1063/5.0157860
中图分类号
O59 [应用物理学];
学科分类号
摘要
Thermophotovoltaics (TPVs) are devices that convert thermal radiation into electricity using a low-bandgap photovoltaic (PV) cell. While the theoretical efficiency can approach the Carnot limit, designing a TPV selective emitter that is spectrally matched with the PV cell's bandgap and is stable at high temperatures is critical for achieving high-efficiency systems. Photonic crystal (PhC) emitters can provide excellent spectral control, but prior experimental designs lack the thermal stability required for high-performance TPVs. In this study, a tri-phase PhC emitter design is proposed and optimized. The tri-phase design introduces an additional material in one of the alternating layers of an existing 1D PhC emitter, potentially stabilizing it at high temperatures. BaZrO3 is introduced in the CeO2 layers of a CeO2/MgO PhC emitter. Stanford Stratified Structure Solver (S4) is used to model the emittance of multiple tri-phase PhC variations. The parameter for optimization is the spectral efficiency of the emitter. The structure with the highest spectral efficiency is only 0.02% less efficient than the original design. The structure with the lowest spectral efficiency is only 0.28% less efficient. Therefore, any tri-phase variation can be applied to existing PhC emitters without compromising on their spectral efficiency. Without the need for manufacturing specific parameters, the tri-phase PhC can be an inexpensive emitter for real world applications that may improve thermal stability without compromising on the spectral efficiency, making the practical applications of TPVs feasible.
引用
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页数:6
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