A5030098253- Thermal Radiation and Cooling Technologies
- Advanced Thermodynamics and Statistical Mechanics
- Quantum Electrodynamics and Casimir Effect
- solar cell performance optimization
- Solar Thermal and Photovoltaic Systems
- Silicon and Solar Cell Technologies
Southeast University
2020-2024
Stanford University
2021
Dew-harvesting technology radiatively cools a condenser below the dewpoint to achieve condensation of water vapor from atmosphere. Due its passive nature, this has attracted broad interest, in particular context worldwide drinking-water scarcity. However, fundamental limit performance not yet been clarified. Moreover, existing applications have limited humid areas. Here, we point out upper bound by carefully considering various parameters such as ambient temperature (Tambient), relative...
A temperature-doubler circuit is the functional equivalent of a voltage-doubler in thermal domain. Effective circuits could benefit energy scavenging from fluctuating resources, e.g. diurnal cycle. However, current paradigm relies on static photonic designs selective solar absorber or blackbody emitter, which aims at maximizing harvesting either sun outer space, but not both. Furthermore, and optimizations have yet been coupled to maximize power output. Here we develop general framework...
An empirical negative T cell − η correlation has been widely applied, without careful justifications, to evaluate the efficiency ( ) increase of solar cells due their temperature decrease. Here, a framework is introduced simultaneously compute and . This model confirms if above-bandgap absorptivity α I not suppressed in optimization sub-bandgap reflectivity ρ II or infrared emissivity, otherwise it may suggest positive correlation. It further gives guideline enhance silicon under typical...
Dew-harvesting technology radiatively cools a condenser below the dewpoint to achieve condensation of water vapor from atmosphere.Due its passive nature, this has attracted broad interest, in particular context worldwide drinking-water scarcity.However, fundamental limit performance not yet been clarified.Moreover, existing applications have limited humid areas.Here, we point out upper bound by carefully considering spectral directional atmospheric transmittance wide range parameters such as...