Incorporation of CdTe Nanocrystals into Metal Oxide Matrices Towards Inorganic Nanocomposite Materials
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Elena Frolova
Abstract
In this work we present a technique of incorporation of semiconductor CdTe nanocrystals (NCs) into metal oxide matrices prepared by inorganic sol-gel method. As the matrices, we chose alumina and aluminum tin oxide, which are optically transparent in the visible region. Among them the first is electrically insulating, while the second is conductive and thus can be used in optoelectronic devices. We found optimal synthetic parameters allowing us to maintain optical properties of the NCs in both matrices even after heating up to 150°C in air. Therefore, in our approach we overcame a common problem of degradation of the optical properties of semiconductor NCs in oxide matrices as a result of the incorporation and subsequent interaction with the matrix. The resulting materials were characterized in detail from the point of view of their optical and structural properties. Based on the results obtained, we suggest the formation mechanism of these materials. Semiconductor NCs embedded in robust and optically transparent metal oxides offer promising applications in optical switching, optical filtering, waveguides, light emitting diodes, and solar concentrators.
Acknowledgments
We are grateful to E. Kern for the SEM measurements, to H. K. Hlushonak for the EPR measurements and to M. Ivanovskaya for the help with interpretation of the EPR spectra.
References
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Preface
- Congratulations to Alexander Eychmüller
- Halogens in the Synthesis of Colloidal Semiconductor Nanocrystals
- Controlled Aqueous Synthesis of CdSe Quantum Dots using Double-Hydrophilic Block Copolymers as Stabilizers
- Fabrication of Ag2S/CdS Heterostructured Nanosheets via Self-Limited Cation Exchange
- Ion-Selective Ligands: How Colloidal Nano- and Micro-Particles Can Introduce New Functionalities
- TEM, FTIR and Electrochemistry Study: Desorption of PVP from Pt Nanocubes
- Incorporation of CdTe Nanocrystals into Metal Oxide Matrices Towards Inorganic Nanocomposite Materials
- Diatoms – A “Green” Way to Biosynthesize Gold-Silica Nanocomposites?
- Evidence for Photo-Switchable Carrier Mobilities in Blends of PbS Nanocrystals and Photochromic Dithienylcyclopentene Derivatives
- Gelation-Assisted Layer-by-Layer Deposition of High Performance Nanocomposites
- Enhancement of the Fluorescence Quantum Yield of Thiol-Stabilized CdTe Quantum Dots Through Surface Passivation with Sodium Chloride and Bicarbonate
- Fluorescence Quenching of CdTe Quantum Dots with Co (III) Complexes via Electrostatic Assembly Formation
- Colloidal Photoluminescent Refractive Index Nanosensor Using Plasmonic Effects
- Towards Low-Toxic Colloidal Quantum Dots
- Color-Enrichment Semiconductor Nanocrystals for Biorhythm-Friendly Backlighting
- Transient Absorption Studies on Nanostructured Materials and Composites: Towards the Development of New Photocatalytic Systems
- Transient Spectroscopy of Glass-Embedded Perovskite Quantum Dots: Novel Structures in an Old Wrapping
- Energy Transfer Between Single Semiconductor Quantum Dots and Organic Dye Molecules
- Chemical Routes to Surface Enhanced Infrared Absorption (SEIRA) Substrates
- Plasmonic Cu/CuCl/Cu2S/Ag and Cu/CuCl/Cu2S/Au Supports with Peroxidase-Like Activity: Insights from Surface Enhanced Raman Spectroscopy
- n-Type Cu2O/α-Fe2O3 Heterojunctions by Electrochemical Deposition: Tuning of Cu2O Thickness for Maximum Photoelectrochemical Performance
- The Photoelectrochemistry of Assemblies of Semiconductor Nanoparticles at Interfaces
- Surface-Charge Dependent Orientation of Water at the Interface of a Gold Electrode: A Cluster Study
- Single Particle Spectroscopy of Radiative Processes in Colloid-to-Film-Coupled Nanoantennas
- Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays
- Anisotropy of Structure and Optical Properties of Self-Assembled and Oriented Colloidal CdSe Nanoplatelets
- Simple Electroless Synthesis of Cobalt Nanoparticle Chains, Oriented by Externally Applied Magnetic Fields
- Functionalization of Graphene Aerogels and their Applications in Energy Storage and Conversion
- Macroscopic Aerogels with Retained Nanoscopic Plasmonic Properties
- Application of Aqueous-Based Covalent Crosslinking Strategies to the Formation of Metal Chalcogenide Gels and Aerogels
- Cellulose-Based Hydrogels with Controllable Electrical and Mechanical Properties
- Naphthalenetetracarboxylic Diimide Derivatives: Molecular Structure, Thin Film Properties and Solar Cell Applications
- Metal-Phenolic Encapsulated Mesoporous Silica Nanoparticles for pH-Responsive Drug Delivery and Magnetic Resonance Imaging
- Extraction of K2CO3 from Low Concentration [K+] Solutions with the Aid of CO2: A Study on the Metastable Phase Equilibrium of K2CO3-Na2CO3-H2O Ternary System
Artikel in diesem Heft
- Frontmatter
- Preface
- Congratulations to Alexander Eychmüller
- Halogens in the Synthesis of Colloidal Semiconductor Nanocrystals
- Controlled Aqueous Synthesis of CdSe Quantum Dots using Double-Hydrophilic Block Copolymers as Stabilizers
- Fabrication of Ag2S/CdS Heterostructured Nanosheets via Self-Limited Cation Exchange
- Ion-Selective Ligands: How Colloidal Nano- and Micro-Particles Can Introduce New Functionalities
- TEM, FTIR and Electrochemistry Study: Desorption of PVP from Pt Nanocubes
- Incorporation of CdTe Nanocrystals into Metal Oxide Matrices Towards Inorganic Nanocomposite Materials
- Diatoms – A “Green” Way to Biosynthesize Gold-Silica Nanocomposites?
- Evidence for Photo-Switchable Carrier Mobilities in Blends of PbS Nanocrystals and Photochromic Dithienylcyclopentene Derivatives
- Gelation-Assisted Layer-by-Layer Deposition of High Performance Nanocomposites
- Enhancement of the Fluorescence Quantum Yield of Thiol-Stabilized CdTe Quantum Dots Through Surface Passivation with Sodium Chloride and Bicarbonate
- Fluorescence Quenching of CdTe Quantum Dots with Co (III) Complexes via Electrostatic Assembly Formation
- Colloidal Photoluminescent Refractive Index Nanosensor Using Plasmonic Effects
- Towards Low-Toxic Colloidal Quantum Dots
- Color-Enrichment Semiconductor Nanocrystals for Biorhythm-Friendly Backlighting
- Transient Absorption Studies on Nanostructured Materials and Composites: Towards the Development of New Photocatalytic Systems
- Transient Spectroscopy of Glass-Embedded Perovskite Quantum Dots: Novel Structures in an Old Wrapping
- Energy Transfer Between Single Semiconductor Quantum Dots and Organic Dye Molecules
- Chemical Routes to Surface Enhanced Infrared Absorption (SEIRA) Substrates
- Plasmonic Cu/CuCl/Cu2S/Ag and Cu/CuCl/Cu2S/Au Supports with Peroxidase-Like Activity: Insights from Surface Enhanced Raman Spectroscopy
- n-Type Cu2O/α-Fe2O3 Heterojunctions by Electrochemical Deposition: Tuning of Cu2O Thickness for Maximum Photoelectrochemical Performance
- The Photoelectrochemistry of Assemblies of Semiconductor Nanoparticles at Interfaces
- Surface-Charge Dependent Orientation of Water at the Interface of a Gold Electrode: A Cluster Study
- Single Particle Spectroscopy of Radiative Processes in Colloid-to-Film-Coupled Nanoantennas
- Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays
- Anisotropy of Structure and Optical Properties of Self-Assembled and Oriented Colloidal CdSe Nanoplatelets
- Simple Electroless Synthesis of Cobalt Nanoparticle Chains, Oriented by Externally Applied Magnetic Fields
- Functionalization of Graphene Aerogels and their Applications in Energy Storage and Conversion
- Macroscopic Aerogels with Retained Nanoscopic Plasmonic Properties
- Application of Aqueous-Based Covalent Crosslinking Strategies to the Formation of Metal Chalcogenide Gels and Aerogels
- Cellulose-Based Hydrogels with Controllable Electrical and Mechanical Properties
- Naphthalenetetracarboxylic Diimide Derivatives: Molecular Structure, Thin Film Properties and Solar Cell Applications
- Metal-Phenolic Encapsulated Mesoporous Silica Nanoparticles for pH-Responsive Drug Delivery and Magnetic Resonance Imaging
- Extraction of K2CO3 from Low Concentration [K+] Solutions with the Aid of CO2: A Study on the Metastable Phase Equilibrium of K2CO3-Na2CO3-H2O Ternary System
