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Standard solar cells heat up under sunlight. The resulting increased temperature of the solar cell has adverse consequences on both its efficiency and its reliability. We introduce a general approach ...
Passive radiative cooling below ambient air temperature under direct sunlight
Passive radiative cooling below ambient temperature direct sunlight
2015/8/6
Cooling is a significant end-use of energy globally and a major driver of peak electricity demand. Air conditioning, for example, accounts for nearly fifteen per cent of the primary energy used by bui...
Ultrabroadband Photonic Structures To Achieve High-Performance Daytime Radiative Cooling
Radiative cooling thermal radiation broadband solar mirror phonon-polariton selective emission
2015/8/7
If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure...
We introduce a general approach to radiatively lower the temperature of a structure, while preserving its color under sunlight. The cooling effect persists in the presence of considerable convective a...
Near-Field Radiative Cooling of Nanostructures
Near-fi eld thermal radiation resistive thermometry cooling
2015/8/7
We measure near-field radiative cooling of a thermally isolated nanostructure up to a few degrees and show that in principle this process can efficiently cool down localized hotspots by ten...