The synthesis of monodisperse chalcopyrite (tetragonal) CuInSe(2) nanocrystals is reported. The nanocrystals have trigonal pyramidal shape, and they exhibited a common crystallographic orientation when drop-cast onto carbon substrates. A crystallographic model for the nanocrystals was developed. The nanocrystals are bounded by one polar {112} surface facet and three nonpolar {114} surface facets.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ja8080605 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Growth of Ultrathick CuInS Shells for Supersized Core/Shell Nanoparticles.
Inorg Chem
December 2024
Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Qianjin Street No. 2699, Changchun 130012, China.
Article Synopsis
- Growth of ultrathick shells on quantum dots (QDs) enhances the properties of nanoparticles (NPs).
- CuInSe quantum dots were created with a uniform surface, allowing for a superthick shell (∼45 nm) of CuInS to be added, resulting in large core/shell nanostructures (~100 nm).
- This technique was further applied to create other core/shell configurations, indicating potential for new chemical and physical phenomena in nanomaterials, beneficial for research and commercial applications.
Single-step synthesis of ternary metal chalcogenides (sf-CuInS2 and sf-CuInSe2) stripped off the organic cover and their use as a catalyst for symmetric Glaser-Hay coupling reactions.
Dalton Trans
May 2024
School of Chemistry, Univeristy of Hyderabad, Gachibowli, Hyderabad 500046, Telangana, India.
Generally, inorganic nano/microparticles produced by chemical routes are covered by organic surfactants or polymers to control their agglomeration during their synthesis. However, these surfactants and polymers negatively affect their catalytic activity because these molecules mask the surface. This work presents the synthesis of surfactant-free CuInS and CuInSe (sf-CuInS2 and sf-CuInSe2) nano/microparticles through simple reactions without surfactant or polymer coatings using LiBH under a thermodynamically favourable condition.
View Article and Find Full Text PDFThermally Activated Delayed Near-Infrared Photoluminescence from Functionalized Lead-Free Nanocrystals.
Angew Chem Int Ed Engl
February 2023
State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China.
As an analogue to thermally activated delayed fluorescence (TADF) of organic molecules, thermally activated delayed photoluminescence (TADPL) observed in molecule-functionalized semiconductor nanocrystals represents an exotic mechanism to harvest energy from dark molecular triplets and to obtain controllable, long-lived PL from nanocrystals. The reported TADPL systems have successfully covered the visible spectrum. However, TADF molecules already emit very efficiently in the visible, diminishing the technological impact of the less-efficient nanocrystal-molecule TADPL.
View Article and Find Full Text PDFMechanism of morphology variations in colloidal CuGaS nanorods.
Nanoscale Adv
September 2021
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois Urbana Illinois 61801 USA
Cu S nanocrystals can serve as templates and intermediates in the synthesis of a wide range of nanocrystals through seeded growth, cation exchange, and/or catalytic growth. This versatility can facilitate and accelerate the search for environmentally benign nanocrystals of high performance with variable shapes, sizes, and composition. However, expanding the compositional space Cu S nanocrystals while achieving necessary uniformity requires an improved understanding of the growth mechanisms.
View Article and Find Full Text PDFEffects of Mono- and Bifunctional Surface Ligands of Cu-In-Se Quantum Dots on Photoelectrochemical Hydrogen Production.
Materials (Basel)
August 2022
Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea.
Article Synopsis
- Semiconductor nanocrystal quantum dots (QDs), particularly CuInSe (CISe)-based QDs, are valuable for solar energy conversion due to their tunable bandgap and ability to absorb a wide spectrum of light.
- The study focuses on how different surface ligands on colloidal CISe QDs affect their performance as photoanodes in photoelectrochemical cells, comparing mono- and bifunctional ligands.
- Results show that QDs with monofunctional ligands improve electron transfer efficiency, leading to a higher current density (~8.2 mA/cm) compared to those with bifunctional ligands (~6.7 mA/cm), providing insights for enhancing QD photoelectrodes for hydrogen generation.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!