Passivation, optoelectronics

Kontrox for
optoelectronics

Kontrox effectively eliminates surface defects in III-V-based optoelectronic devices for a significant improvement in performance and power efficiency.

Edge-emitting lasers

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Forming crystalline oxide structures on laser facets for a high-quality passivation effect at low cost-of-ownership

Up to 98% reduction of surface defects thanks to optimized in-situ cleaning and passivation

Effective passivation of facets is the key to obtaining the highest power output of edge-emitting lasers.

Unlike conventional methods that rely on costly cleaving in UHV conditions, Kontrox permits cleaving in air, after which the laser bars are treated with an optimized in-situ cleaning process. Once a clean facet is obtained, the laser bars are passivated in highly controlled conditions before applying the mirror coatings. This way, we achieve results similar to the best processes currently available at significantly reduced costs.

Kontrox increases photoluminescence emission intensity monitored directly from the laser facet active area, indicating the improvement of surface quality. 

 
 

microLEDs

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Up to 4 times higher brightness
(InGaAlP)

Up to 8 times higher efficiency in small chips
(e.g. 5µm GaN)

Drastically improves chip-to-chip uniformity

In microLEDs, poor efficiency at low current densities and variation of emission level between chips is one of the key issues that is directly related to the quality of the sidewalls of the chips and the high surface recombination effects. These effects become more prominent as the chip size gets smaller.

Kontrox forms a high-quality passivation layer with substantially reduced defect densities improving the microLEDs power efficiency & brightness levels significantly

 

Other optoelectronic applications

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Kontrox forms a high-quality passivation layer with substantially reduced defect densities improving the microLEDs power efficiency & brightness levels significantly