Nov 29 2010
Sensor Electronic Technology (SETI), National Security Technologies (NSTec), and Stanford University have showed exceptional radiation hardness and environmental robustness of SETI’s UVTOP deep ultraviolet LEDs.
UVTOP UV LEDs
The UVTOP LEDs are ideal for numerous terrestrial and space applications where traditional UV light sources are too delicate.
The Deep UV LEDs feature 255 nm peak emission wavelength and have undergone rigorous space testing for huge mechanical shocks and temperature variations with random mechanical vibrations of 14g rms, and 27 cycles of temperature cycles at 100K. After the vigorous testing, the optical output power, emission spectra, and the forward voltage of the LEDs demonstrated no major changes.
The LEDs showed extreme radiation hardness under irradiation at a maximum of 2x1012 protons/cm2. In addition, the UV LEDs showed high operating lifetimes of 25,000 hrs in vacuum, and over 26,000 hrs in nitrogen atmosphere, while exhibiting no major spectral shift or power drop.