Three-dimensional photonic-crystal emitter for thermal photovoltaic power generation
Abstract
A three-dimensional tungsten photonic crystal is experimentally realized with a complete photonic band gap at wavelengths λ⩾3 μm. At an effective temperature of <T>∼1535 K, the photonic crystal exhibits a sharp emission at λ∼1.5 μm and is promising for thermal photovoltaic (TPV) power generation. Based on the spectral radiance, a proper length scaling and a planar TPV model calculation, an optical-to-electric conversion efficiency of ∼34% and electrical power of ∼14 W/cm2 is theoretically possible.
- Publication:
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Applied Physics Letters
- Pub Date:
- July 2003
- DOI:
- Bibcode:
- 2003ApPhL..83..380L
- Keywords:
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- 84.60.Jt;
- 42.70.Qs;
- Photoelectric conversion: solar cells and arrays;
- Photonic bandgap materials