Figure 5
From: Pulsed-laser micropatterned quantum-dot array for white light source
EL characterizations and color performance.
(a) Shows the relative EL emission spectra of the QD-based white-light LEDs at driving current changed from 10 mA to 50 mA. The inset OM image shows white light emission from the developed light-emitting device. (b) Indicates the trace of light illumination from the photoluminescent QD-based white-light LEDs in the CIE1931 chromaticity diagram. (c) Shows the CCT values of the developed device operated at different driving currents. (d) The luminous efficiency and the luminous efficacy of radiation (LER) of the developed QD-based white light LEDs. The driving current is changed from 1 mA to 150 mA, while the LER is around 262 lm/Wop at 50 mA.
