Background story of the invention of efficient blue InGaN light emitting diodes

Accurate Trace Element Reporting in Corundum: Development of Secondary Ion Mass Spectrometry Relative Sensitivity Factors

“…2019). The reasonable lattice‐match of corundum to GaN propelled the synthetic sapphire substrate to the forefront of blue LED technology (the precursor to the now ubiquitous energy‐efficient white LED), as it gave the semiconductor industry a commercially viable process and ultimately contributed to the 2014 Nobel Prize in Physics (Nakamura 2014). Single‐crystal synthetic corundum radiation detectors based upon thermoluminescence (TL) and optically stimulated luminescence (OSL) have been commercially available for decades (Akselrod et al .…”