Quantum Dot Technology

QD booth area

Highest lumen density at best color over surface

The Quantum Dot (QD) technology from ams OSRAM makes LEDs even more efficient. The new conversion delivers outstanding efficacy, even at high color rendering indexes.

This technology enables ams OSRAM to close the efficacy gap that exists between CRI 80 and CRI 90 LEDs today. The new OSCONIQ® E 2835 QD CRI 90 includes a specially developed QD phosphor solution that enables CRI 90 to achieve an outstanding efficacy value in a 2835 package.

Quantum Dots are nanometer-sized semiconductor particles that are about 10,000 times smaller than the diameter of a human hair. Due to their size, quantum mechanical effects become dominant in these structures. These nanoparticles emit light of a specific wavelength if blue LED pump light is applied to them and this wavelength (color) depends on the size of the Quantum Dots. For instance, 2 nanometer Quantum Dots produce blue light, whereas 7 nanometer sized particles emit red.


The unique characteristics of PLT’s technology are that its Quantum Dots are encapsulated in order to protect them from moisture and humidity which is, in fact, the main culprit for their performance deterioration today. With the added stability afforded Quantum Dots incorporating PLT’s encapsulation technology, these Quantum Dots are the only ones to reliably withstand the harsh conditions of “On Chip” operation inside the LED component.

This advanced technology enables Osram Opto Semiconductors to close the efficiency gap between CRI 80 and CRI 90. It enables our customers to quickly develop high-quality, cost-efficient luminaires with outstanding efficacy and excellent color rendering.

Quantum Dots on LEDs promise to change the display and lighting industries by replacing broad-emitting, bulky phosphors through efficient nano-sized particles, resulting in higher efficiency and better color for displays and lighting.

Quantum Dots exhibit narrow band emission spectra which can be precisely tuned by changing their size. These narrow band Quantum Dots converters show potential for a large number of LED applications. In particular, they can be used to significantly improve the conversion efficiency of white LEDs for General Lighting.

Quantum Dots enable high-color rendering and very energy-efficient LED components for the next generation of lighting applications.

QD Phosphor

ams OSRAM already launches its second QD product - OSCONIQ® E 2835 QD CRI90 with significantly improved efficacy incorporating CdSe based Quantum Dots. The product is fully compliant with the RoHS regulations (max. allowable Cadmium (Cd) content).

The OSCONIQ® E 2835 marks the next step towards new LED components for the premium high quality lighting market. It was specially developed for area lighting and downlight applications and therefore empowers customers to realize luminaires with high efficacy and excellent color rendering.