Silicon-coated CdZnSeS/ZnS quantum dots contribute to great performance white light-emitting diodes

Femtosecond laser regulatory focus ablation patterning of a fluorescent film up to 1/10 of the scale of the diffraction limit

“…In consideration of the weak stability of QDs and perovskites due to their sensitivity to solvents, heat and light, the frequently used traditional photolithography process is not suitable. [11][12][13][14] Extremely high resolution could be achieved by stamp nanoimprinting, but this technique has the obvious limitation of repeatability and complicated patterns owing to the deformation and wearout. 15,16 Due to the restriction of the volume of the solution ejected in a single shot, it is difficult to achieve high resolutions below 5 μm for the existing inkjet printing technology.…”

Quantum Dots Electrostatically Adsorbed on the Surface of SiO2 Nanoparticle-Decorated Phosphor Particles for White Light-Emitting Diodes with a Stable Optical Performance

“…Common white light-emitting diodes (WLEDs) containing blue light-emitting chips and yellow light-emitting phosphor have high luminous efficiencies (LEs) but low color rendering indexes (CRIs) because of the lack of red light. , Quantum dots (QDs) as luminescent nano-semiconductor materials have shown excellent advantages in wavelength turnability and color rendering capability in the application of WLEDs. − A phosphor and QDs-converted WLED (PQ-WLED) can achieve high LE and CRI, simultaneously. − During the packaging of PQ-WLEDs, QDs and phosphor are uniformly mixed in a polymer such as silicone with a certain viscosity and behave differently: phosphor with a diameter of several microns undergoes sinking in the viscous silicone, , but the nanometer-sized QDs stay in suspension. After several minutes, phosphor is distributed in a gradient concentration in silicone but QDs are still distributed uniformly.…”