Temperature Dependences of Optical Characteristics
It is typical for all semiconductor radiation sources to have intensity decreasing with
increasing temperature. This decrease of the emission intensity is due to several temperature-dependent factors
including non-radiative recombination via deep levels, surface recombination, and carrier loss over heterostructure barriers.
In addition to this peak wavelength shifts to longer wavelength when the temperature increases.
Housing LED chip into a package with a thermoelectric module (Peltier element) enables to obtain fixed temperature
of a LED chip in a wide range
and thereby to provide wavelength tuning and stabile operating at the desired wavelength.
IBSG LEDs can operate in a wide temperature range, so that certainly broadens
their field of application. As an example LED4.15 spectra at 1-120°C temperature range are presented here.
