Quantitative TEM analysis of quantum structures - ScienceDirect
2004年11月17日 · The potential of combined use of conventional transmission electron microscopy (CTEM), high-resolution TEM imaging (HRTEM) and digital analysis is applied to study (Si,Ge) islands grown by liquid phase epitaxy (LPE) on Si substrates and Ga(Sb,As) quantum dot (QDs) structures grown by metal-organic …
Structural characterization of CdSe/ZnS core–shell quantum dots (QDs …
2014年3月4日 · We were able to obtain structural information of CdSe/ZnS core–shell QDs using nano-beam diffraction by controlling the nano-probe of the dark field scanning TEM (DF-STEM) mode and strain analysis with high-resolution TEM (HRTEM)/STEM images.
Combining HR-TEM and XPS to elucidate the core–shell ... - Nature
2020年11月26日 · By combining high-resolution transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS), a novel whole nanoobject approach is developed representatively for an...
Quantitative HRTEM studies on local lattice distortions in strained ...
2003年8月28日 · In the following, we report on studies on stacked layers of InP quantum dots (QDs) in a GaInP matrix. The strain measurements yielded valuable information on the strain distribution within the QDs and in the surrounding matrix and a correlation between photoluminescense characteristics and structural parameters.
Highly luminescence CdTe/ZnSe core–shell QDs; synthesis by
2020年6月16日 · XRD, Raman, EDAX, and HRTEM analyses confirmed successful formation of ZnSe shell around CdTe QDs. CdTe QDs indicated a green band edge emission with a peak at about 535 nm. PL quantum yield (QY) was increased significantly from about 20% for CdTe to about 50% for CdTe/ZnSe QDs.
CdSe / ZnS核-壳量子点（QDs）的结构表征，采用TEM / STEM观 …
通过控制暗场扫描tem（df-stem）模式的纳米探针和高分辨率tem（hrtem）/应变分析，我们能够使用纳米束衍射获得cdse / zns核壳量子点的结构信息。 STEM图片。
TEM and HRTEM images (inset) of the Ag2S QDs - ResearchGate
Thioglycolic acid (TGA)-coated colloidal Ag2S quantum dots (QDs) emitting in the near-infrared (NIR) region upon excitation by an 808 nm diode laser were synthesized.
TEM and HRTEM images of obtained QDs with emission …
Understanding the chemical and physical properties of core/shell nanocrystal quantum dots (QDs) is key for their use in light-emission applications. In this paper, a single-step injection-free...
TEM and HRTEM images of MnS/ZnS core-shell QDs.
Based on the electro-optical energy transfer process, the pseudo-spectral-luminous efficiency function (ΦQD) of quantum dots (QDs) is introduced, the equations of chromaticity coordinates ...
HRTEM study of strain energy distribution on the self-organized …
The formation of quantum-dot structures will induce strain energy in the quantum well layer, optical measurements of photoluminescence (PL) spectral peak and microstructure analyses with high-resolution transmission electron microscopy (HRTEM) showed the strong dependency on quantum well (QW) width in InGaN/GaN QW structures.