Quantum Dots are unique as an optical conversion technology. Properties such as fine control and tuning of emission wavelength, spectral characteristic, nanoscale size and high absorption per unit volume all allow for applications in areas that were previously not addressable by traditional optical conversion technologies. However, stability and processing issues related to sensitivity of these nanoparticles to high light flux and environmental conditions have historically been a challenge in bringing these technologies into products. In this talk, both Cadmium and Cadmium-free Quantum Dot technologies are explored which are stable enough to enable real world on chip applications. Current optical & reliability performance of such layers in on-chip configurations will be discussed as well as the possibilities that such a QD conversion layer applied through liquid phase deposition processes can enable. The limits of such a system in terms of minimum thickness for full conversion and the potential for application in display, MicroLED and other photonics applications will also be discussed.

David O’Brien, Director of QD Materials at ams OSRAM, holds a PhD in Physics from University College Cork and BSc. Hons in Physics form University of Galway, Ireland. He has more than 20 years’ experience working in photonics from fundamental research both at University of St Andrews and later ams OSRAM, through product design and development up to and including ramp up to high volume production. He has over 20 patents granted in diverse areas from LED packaging, Vital Sign Monitoring, Chip and Device Architectures for IR, UV, and Quantum Dots.