Recent research on high-voltage
light-emitting diode (HV-LED) has shown that multiple series-connected microdiodes in a single large chip can obtain high forward voltage with a low driving current, thereby reducing current crowing and efficiency droop [20-22].
By internally connecting the base and collector of a light-emitting transistor, they created a new form of
light-emitting diode, which modulates at up to 7 gigahertz, breaking the speed record once again.
SSL engines use so-called
light-emitting diodes (LEDs), which are more far more energy efficient than incandescent light bulbs.
For liquid crystal displays and outdoor lightings, white
light-emitting diodes (WLEDs) have been extensively used as backlight source due to their eco-friendly features, compact size, and high reliability compared to conventional light sources, such as incandescent bulbs and fluorescent lamps [1-4].
Light-emitting diodes that include two-dimensional, photonic crystals have a similar structure, he notes.
III-V compound semiconductors of A1N, GaN, and InN are suitable materials for
light-emitting diodes (LEDs) because of their wurtzite crystal structures and direct band gap characteristics [1].
Sample B is the organic
light-emitting diode with a yellow phosphor embedded PDMS film and Sample A has an identical OLEDs device without flexible PDMS film.
The next step, says Hulvat, will be to produce an actual organic
light-emitting diode, which glows when stimulated electrically.