Angular spectrum of visible resonant cavity light-emitting diodes

Abstract

Enhanced modulation rate in platinum-diffused resonant-cavity light-emitting diodes J. Appl. Phys. 98, 093504 (2005); 10.1063/1.2125119Resonant-cavity InGaN multiple-quantum-well green light-emitting diode grown by molecular-beam epitaxy

Variable numerical-aperture temporal-coherence measurement of resonant-cavity LEDs

“…The agreement between experimental results is reasonable considering that the measurements were taken using different instruments. The coherence length decreases with increased collection angle or NA, as the spectral linewidth broadens [9], [10].…”

“…These are an attractive source for use as reliable, low-cost, efficient emitters for short-distance data communications using multimode fiber, such as plastic-optical fiber (POF) [7], [8], since the devices measured operate in the red wavelength region. These are interesting devices since, unlike conventional LEDs, they have a variable width output spectrum as a function of numerical aperture (NA) [9]- [11]. We present direct interferometric measurements of the temporal-coherence length as a function of NA for a RCLED operating at 650 nm.…”

Effect of SiO2/Si3N4 dielectric distributed Bragg reflectors (DDBRs) for Alq3/NPB thin-film resonant cavity organic light emitting diodes

“…Due to a redirection of the Airy mode inside the escape window, the extraction efficiency of RCLED is higher than that of the conventional LED. Besides, RCLED also takes the advantages of lower divergence of output beams, higher spectral purity, better temperature stability and higher modulation bandwidth as compared to the conventional LEDs [7][8][9][10][11]. Some pioneers have presented the effects of emission color and view angle for OLED with SiO 2 /Si 3 N 4 DBRs.…”

Influence of Quantum Well and Cavity Features on the Spectral, Angle- and Temperature-Dependent Emission of 650 nm Resonant Cavity LEDs

“…(1), the peak wavelength of the light output will also depend on emission angle [12], while the intensity will depend on how the intrinsic QW emission broadens with current density. To measure this dependence, devices were mounted on a rotation stage and the EL collected, over a small solid angle, into a fixed fibre, and analysed by the OSA.…”