Colloidal quantum dots(QDs)are a unique class of emissive materials with size-tunable emission wavelengths,saturated emission colors,near-unity luminance efficiency,inherent photo-and thermal-stability,and excellent s...Colloidal quantum dots(QDs)are a unique class of emissive materials with size-tunable emission wavelengths,saturated emission colors,near-unity luminance efficiency,inherent photo-and thermal-stability,and excellent solution processability.Display based on quantum-dot light-emitting diodes(QLED)may combine the superior properties of QDs,the benefits of solution-based fabrication techniques,and the advantages of self-emission devices,which promises an unprecedented generation of cost-effective,large-area,energysaving,wide-color-gamut,ultra-thin and flexible displays.展开更多
By using a simply and low-temperature hydrothermal method, ZnO nanorod array films with narrow size distribution and high orientation consistence were successfully prepared on ITO substrates, which were pre-treated wi...By using a simply and low-temperature hydrothermal method, ZnO nanorod array films with narrow size distribution and high orientation consistence were successfully prepared on ITO substrates, which were pre-treated with ZnO colloid solution. The obtained ZnO nanostructure was characterized by XRD and SEM. The results of characterization indicate that the nanorods are high-quality single crystals growing along (001) direction with a high consistent orientation perpendicular to the substrate. SEM images show that the nanorods have a very narrow size distribution of 20—50 nm with the average diameter about 40 nm. The room temperature photoluminescence of the as-prepared ZnO films exhibits a strong UV emission at about 390 nm and a weak emission at about 460 nm. The ease of fabricating high-quality ZnO nanorod arrays in large scales will greatly promote the fundamental research and practical applications of the ordered one-dimention ZnO structure in various fields of nanoscale science and technology.展开更多
文摘Colloidal quantum dots(QDs)are a unique class of emissive materials with size-tunable emission wavelengths,saturated emission colors,near-unity luminance efficiency,inherent photo-and thermal-stability,and excellent solution processability.Display based on quantum-dot light-emitting diodes(QLED)may combine the superior properties of QDs,the benefits of solution-based fabrication techniques,and the advantages of self-emission devices,which promises an unprecedented generation of cost-effective,large-area,energysaving,wide-color-gamut,ultra-thin and flexible displays.
文摘By using a simply and low-temperature hydrothermal method, ZnO nanorod array films with narrow size distribution and high orientation consistence were successfully prepared on ITO substrates, which were pre-treated with ZnO colloid solution. The obtained ZnO nanostructure was characterized by XRD and SEM. The results of characterization indicate that the nanorods are high-quality single crystals growing along (001) direction with a high consistent orientation perpendicular to the substrate. SEM images show that the nanorods have a very narrow size distribution of 20—50 nm with the average diameter about 40 nm. The room temperature photoluminescence of the as-prepared ZnO films exhibits a strong UV emission at about 390 nm and a weak emission at about 460 nm. The ease of fabricating high-quality ZnO nanorod arrays in large scales will greatly promote the fundamental research and practical applications of the ordered one-dimention ZnO structure in various fields of nanoscale science and technology.
