A Prototype Device Architecture for Electroluminescent Cooling LEDs

As the revolution in artificial intelligence is putting a strain on currently existing data
center cooling solutions, new breakthroughs in cooling are urgently needed.
Thermophotonics offers a promising, though experimentally challenging, alternative in this
field, which employs light-emitting diodes (LEDs) for electroluminescent cooling (ELC).
This work experimentally demonstrates a prototype device architecture for such solid-state,
environmentally clean cooling devices. It enables the nondestructive and reversible
integration of a solid high-refractive index light extraction dome without obstructing current
injection to drive electroluminescence. This approach enhances light extraction almost
threefold relative to industry-standard encapsulants, which, in combination with a state-of
the-art back reflector, results in a 44% wall-plug efficiency for a GaAs-active region LED.
Moreover, the prototype is compatible with extended perimeters to suppress perimeter
recombination, while also being directly applicable in the thermophotonics configuration. As
such, it provides a proof-of-concept for how the next generation cooling devices may look like.
Based on experimental results, the next steps required to surpass the cooling threshold are
discussed. This work therefore lays the groundwork for an environmentally sustainable, chip
integrated cooling solution to support the future of artificial intelligence responsibly. This dataset contains raw data obtained from measurements used to produce the figures in the publication, the figures themselves, Matlab scripts that were used for calculations, and experimental protocols.