2021-07-23

Tunnel-Junction Blue/Green μLED Stacks

University of California Santa Barbara (UCSB) in the USA has reported on the use of tunnel junctions (TJs) to stack green and blue micro-sized light-emitting diodes (μLEDs) grown by metal-organic chemical vapor deposition (MOCVD) [Panpan Li et al,  Optics Express, vol29, p22001, 2021; Panpan Li et al, Appl. Phys. Lett., vol118, p261104, 2021].   The researchers comment: “The design enables the realization of cascaded blue/green μLEDs in one device with independent junction control, that is, we can control the blue μLED...
Continue reading
From June 10 to 12 in Amsterdam, GreenTech visitors can explore how the latest-generation LED and sensor solutions from ams OSRAM enhance plant growth, save energy, and promote sustainable farming. At Hall 05, Booth 05.357, attendees will expe... READ MORE

The number of modern applications using 3D sensor technologies is steadily increasing, including ambient sensing for industrial robots, various face recognition applications, object detection, and machine vision. Vertical Cavity Surface Emitti... READ MORE