Tunable natural light realized by phosphor-innovation light-emitting-diode technology

Emission Rate Variation and Efficiency Measurement in TiO2Light Emitting Diode

“…Light emitting diode (LED) is one of solid state lighting device that emits photons when the electrons and holes are recombining as electric current flow through it [1]. Previously, the fluorescent light bulbs are currently used in daily application.…”

“…However, due to problem of fluorescent light bulbs in electrical power consumption, lifetime and also reliability have attracted researchers to develop light emitting diode technology as primary lighting source in future. In 1962, as the first inventor of LED, Nick Holonyak believes the time ahead in LED [1].…”

Current density impact on the emission behavior of GaN‐based blue emitting LEDs in the temperature range of 4.2–400 K

“…Hence, the requirements for modern light emitting diodes (LEDs) are stable emission spectra, independent of the modality of current injection [pulse width modulated (PWM) or direct current (DC)]. These driving parameters are mainly responsible for the temperature increase of the pn‐junction, which leads to unwanted spectral variations during operation of the LEDs . In white light illuminants, especially blue emitters play a prevailing role because they are used as primary emitter and also as excitation source for the phosphor conversion technology.…”