A5063128018- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Organoselenium and organotellurium chemistry
- Machine Learning in Materials Science
- Optical properties and cooling technologies in crystalline materials
- Ferroelectric and Piezoelectric Materials
- Solid-state spectroscopy and crystallography
- Molecular spectroscopy and chirality
- Crystal Structures and Properties
- Multiferroics and related materials
- Semiconductor Quantum Structures and Devices
Vanderbilt University
2020-2024
Center for Nanoscale Science and Technology
2020-2022
Nashville Oncology Associates
2020
A fundamental precept of chemistry is that properties are manifestations the elements present and their arrangement in space. Controlling atoms nanocrystals not well understood nanocrystal synthesis, especially transition metal chalcogenides pnictides, which have rich phase spaces. This Perspective will cover some recent advances current challenges. The perspective includes introductions to challenges particular chalcogenide pnictide chemistry, often-convoluted roles bond dissociation...
Notable thermal shifts in diselenides have been documented 77Se NMR for more than 50 years, but no satisfactory explanation has found. Here, five hypotheses are considered as possible explanations the large temperature dependence of chemical diaryl and dialkyl compared to monoselenides selenols. Density functional theory calculations provided bolster better understand effects barrier height dipole energies. It is proposed that diselenide due rotation around Se–Se bond sampling twisted...
1H nuclear magnetic resonance (NMR), 77Se NMR, and powder X-ray diffraction (XRD) were used to monitor the thermal decomposition of diphenyl dibenzyl diselenide precursors toward synthesis copper selenides. Copper was found promote both precursors. The inorganic nanocrystals organic byproducts sensitive specific diaryl diselenides presence oleylamine copper. Molecular mechanistic routes are proposed. Berzelianite (Cu1.8Se), klockmannite (CuSe), umangite (Cu3Se2), petřı́čekite (m-CuSe2)...
A unique ditelluride precursor enables nanoscale access to vulcanite nanosheets and metastable cube-like Cu<sub>1.5</sub>Te nanocrystals.
The incorporation of quantum dots in display technology has fueled a renewed interest InP-based dots, but difficulty controlling the Zn chemistry during shelling stymied thick, even ZnSe shell growth. characteristic uneven, lobed morphology Zn-based shells is difficult to assess qualitatively and measure through traditional methods. Here, we present methodological study utilizing quantitative morphological analysis InP/ZnSe analyze impact key parameters on InP core passivation epitaxy. We...
We report the appearance of ferroelectric behavior arising from a room-temperature cation exchange cadmium-based semiconductor nanoparticles. Fluorescence retention was achieved through protective CdS shelling before with tin(IV) by containing defects in shell rather than fluorescent CdSe cores. Ferroelectric response, measured using Sawyer–Tower circuit, kept constant, while fluorescence increases an increase number monolayers. At 8 monolayers, reached 99%, allowing for addition...