U.s. Scientists Develop Air Bridge Thermophotovoltaic Cells With 44% Efficiency
U.SU.S.
PV Magazine International 12:34 pm on May 27, 2024
** Researchers have developed an advanced photovoltaic cell that employs a free-standing semiconductor membrane, an air layer, and backside reflectance to significantly enhance efficiency. The 0.90 eV absorber bandgap achieved the highest power conversion rate of 43.8% at 375C, indicating potential for over 50% in future improvements. This technology could lead to significant gains in round-trip efficiency and passive energy storage capabilities without lithium mining or specific water sources, offering an advantage over traditional methods.
- Photovoltaic Cell Design: Researchers created a cell with air gap for enhanced backside reflection.
- Bandgap Efficiency: Achieved 43.8% conversion rate at 375C, highest compared to similar cells.
- Future Prospects: Potential efficiency above 50%, with improvements in round-trip efficiency.
- Environmental Impact: Offers passive storage without the need for lithium mining or water sources, unlike conventional methods.
- Industry Comparison: Outperforms other technologies by integrating a free-standing membrane and conductive electrodes to reduce thermal resistance.
https://www.pv-magazine.com/2024/05/27/u-s-scientists-develop-air-bridge-thermophotovoltaic-cells-with-44-efficiency/