A highly-efficient, concentrating-photovoltaic/thermoelectric hybrid generator
- A highly-efficient, concentrating-photovoltaic/thermoelectric hybrid generator
- 최원준; 김진상; 백승협; 김상현; 김상태; 정성진; 금대명; 길태현; 정대한; 이수석; 박찬; 백정민; 이기석; 김창주
- Photovoltaic-thermoelectric hybrid generator; Concentrating photovoltaics; Thermoelectrics; Wafer bonding
- Issue Date
- Nano energy
- VOL 37-247
- A concentrating photovoltaic (CPV) cell exhibits the highest conversion efficiency among any solar cells. However, the further enhancement of the CPV efficiency is strongly limited by the heat generation at high solar concentrations. Here, we demonstrate a concentrating photovoltaic/thermoelectric hybrid generator using a single-junction, GaAs-based solar cell and a conventional thermoelectric module as a model system. Our hybrid generator gives rise to the conversion efficiency larger than the single CPV cell by ~3% at the solar concentration of 50 suns. Controlling thermal flow in the hybrid generator and the Peltier cooling effect is the key to achieving high efficiency. Our result provides a framework for designing a highly-efficient hybrid generator using both photo-electric and photo-thermal effects for the clean-energy production.
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