Light-Emitting Diode (LED) History of Innovations

Excel list of innovations and technological breakthroughs related to light-emitting diodes (LEDs). Covers the origins of the technology pre 1950 up until 2020. Data is categorized by the underlying semiconductor material used in the devices (GaN, InGaN, etc.). Metadata includes: origin of innovation (organization, country), references (publications, patents), etc. Compiled as part of the research project "What factors drive innovation in energy technologies? The role of technology spillovers and government investment", funded by the Alfred P. Sloan Foundation.