For accurate and reliable measurement of the internal quantum efficiency (IQE) of light-
emitting diodes (LEDs), the method should be theoretically solid and experimentally simple …

Electroluminescent refrigeration, though theoretically proposed half a century ago, is rarely
reported due to the requirement of extremely low nonidealities. Here, we theoretically show …

The quantum efficiency of double hetero-junction light-emitting diodes (LEDs) can be
significantly enhanced at low current density by tailoring the spatial profile of dopants to …

This study was launched to demonstrate that LEDs at zero bias show recombination photon
emissions, and to check the models for the same. A method for measuring the light emission …

We present a design principle for photonically-active double-heterojunction (DHJ) diodes
that utilizes spatial control over the distribution of dopant impurities in the growth direction to …

Demonstrating and harnessing electroluminescent cooling at technologically viable cooling
powers requires the ability to routinely fabricate large area high quality light-emitting diodes …

It is known that the wall-plug efficiency (WPE) of a light-emitting diode (LED) can exceed
unity and that electroluminescence cooling (ELC) happens in this scenario. However, it is …

Thermography tools that perform accurate temperature measurements with nanoscale
resolution are highly desired in our modern society. Although researchers have put …

Recent work on electro-luminescent cooling has focused either on diodes at forward bias
voltages just below the bandgap energy, where high cooling power density is possible, or …

An energy storage capsule for storing energy in the form of photons. The body of the capsule
may surround a sealed vacuum environment in which several layers of reactive material are …