Journal ArticleDOI
Effect of the size-induced structural transformation on the band gap in CdS nanoparticles
TLDR
In this paper, the first attempt at relating the size-induced transformation from a hexagonal to a cubic structure in CdS nanoparticles to a change in the band gap was made.Abstract:
The interrelation between particle size, crystal structure and optical properties in semiconductor quantum dots has elicited widespread interest. We report the first attempt at relating the size-induced transformation from a hexagonal to a cubic structure in CdS nanoparticles to a change in the band gap. CdS nanoparticles with particle size in the 0.7-10 nm range were prepared by chemical precipitation using thiophenol as a capping agent. Whereas the band gap for bulk hexagonal CdS is about 2.5 eV, that for 1 nm cubic CdS nanoparticles was found to be almost 3.9 eV. We also suggest a simple mechanism (based on the periodic insertion of stacking faults) for the transformation from the cubic zinc blende structure to the hexagonal wurtzite structure.read more
Citations
More filters
Journal ArticleDOI
CdS-Based photocatalysts
TL;DR: In this article, a critical review presents the recent advances and progress in the design and synthesis of various semiconductor photocatalytic technology that converts solar energy into chemical fuel has been widely studied.
Journal ArticleDOI
Highly Durable N-Doped Graphene/CdS Nanocomposites with Enhanced Photocatalytic Hydrogen Evolution from Water under Visible Light Irradiation
TL;DR: In this paper, the photocatalytic activity of as-prepared N-graphene/CdS for hydrogen production from water under visible light irradiation at λ ≥ 420 nm was investigated.
Journal ArticleDOI
Effects of the preparation method of the ternary CdS/TiO2/Pt hybrid photocatalysts on visible light-induced hydrogen production
TL;DR: In this paper, a variety of combinations of CdS, TiO2, and Pt in preparing the hybrid catalysts were studied for hydrogen production under visible light (λ > 420 nm) irradiation.
Journal ArticleDOI
Cadmium sulfide-based nanomaterials for photocatalytic hydrogen production
TL;DR: In this paper, a review of the recent advances in material design and technological aspects of CdS-based photocatalysts for applications in photovoltaic H2 production is presented.
Journal ArticleDOI
Facile Cd−Thiourea Complex Thermolysis Synthesis of Phase-Controlled CdS Nanocrystals for Photocatalytic Hydrogen Production under Visible Light
Ningzhong Bao,Liming Shen,Tsuyoshi Takata,Kazunari Domen,Arunava Gupta,and Kazumichi Yanagisawa,Craig A. Grimes +6 more
TL;DR: A simple cadmium−thiourea complex thermolysis route for the formation of CdS nanocrystals with controlled dispersity, crystalline phase, composition, average grain size, and band gap was described in this article.
References
More filters
Book
Theory of Dislocations
John Price Hirth,Jens Lothe +1 more
TL;DR: Dislocations in Isotropic Continua: Effects of Crystal Structure on Dislocations and Dislocation-Point-Defect Interactions at Finite temperatures.
Book
Pearson's handbook of crystallographic data for intermetallic phases
Pierre Villars,L. d. Calvert +1 more
TL;DR: All crystallographic data are now given in the standard setting according to the International Tables for Crystallography, and the following improvements over the original Pearson's.
Journal ArticleDOI
Electron–electron and electron‐hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state
TL;DR: In this paper, the excited electronic states of semiconductor crystallites sufficiently small (∼50 A diam) that the electronic properties differ from those of bulk materials were modeled, and an approximate formula was given for the lowest excited electronic state energy.
Journal ArticleDOI
Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer
TL;DR: In this article, a hybrid organic/inorganic electroluminescent device was constructed based on the recombination of holes injected into a layer of semiconducting p-paraphenylene vinylene (PPV) with electrons injected into the multilayer film of cadmium selenide nanocrystals.