Controlling the Distribution of CdSe Colloidal Quantum Dots in Conducting Polymer Nanocomposite Thin Films Using Matrix-Assisted Pulsed Laser Evaporation

2008 ◽  
Author(s):  
Adrienne D. Stiff-Roberts ◽  
Ryan Pate ◽  
Kevin R. Lantz
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Conducting Polymer ◽  
Pulsed Laser ◽  
Polymer Nanocomposite ◽  
Colloidal Quantum Dots ◽  
Laser Evaporation ◽  
Nanocomposite Thin Films ◽  
Conducting Polymer Nanocomposite

Optical Characterization of CdSe Colloidal Quantum Dot/ MEH-PPV Polymer Nanocomposites Spin-cast on GaAs Substrates

2006 ◽  
Vol 939 ◽  
Author(s):  
Adrienne D. Stiff-Roberts ◽  
Abhishek Gupta ◽  
Zhiya Zhao
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Optoelectronic Devices ◽  
Photogenerated Electron ◽  
Polymer Nanocomposite ◽  
Colloidal Quantum Dots ◽  
Infrared Light ◽  
Gaas Substrates ◽  
Conducting Polymer Nanocomposite ◽  
Colloidal Quantum Dot

ABSTRACTThe motivation and distinct approach for this work is the use of intraband transitions within colloidal quantum dots for the detection of mid- (3-5 μm) and/or long-wave (8-14 μm) infrared light. The CdSe colloidal quantum dot/MEH-PPV conducting polymer nanocomposite material is well-suited for this application due to the ∼1.5 eV difference between the corresponding electron affinities. Therefore, CdSe colloidal quantum dots embedded in MEH-PPV should provide electron quantum confinement such that intraband transitions can occur in the conduction band. Further, it is desirable to deposit these nanocomposites on semiconductor substrates to enable charge transfer of photogenerated electron-hole pairs from the substrate to the nanocomposite. In this way, optoelectronic devices analogous to those achieved using Stranski-Krastanow quantum dots grown by epitaxy can be realized. To date, there have been relatively few investigations of colloidal quantum dot nanocomposites deposited on GaAs substrates. However, it is crucial to develop a better understanding of the optical properties of these hybrid material systems if such heterostructures are to be used for optoelectronic devices, such as infrared photodetectors. By depositing the nanocomposites on GaAs substrates featuring different doping characteristics and measuring the corresponding Fourier transform infrared absorbance, the feasibility of these intraband transitions is demonstrated at room temperature.

scholarly journals One-step preparation of nitrogen doped titanium oxide/Au/reduced graphene oxide composite thin films for photocatalytic applications

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49771-49779 ◽  
Author(s):  
A. Datcu ◽  
L. Duta ◽  
A. Pérez del Pino ◽  
C. Logofatu ◽  
C. Luculescu ◽  
...  
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pulsed Laser ◽  
Laser Evaporation ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Nanocomposite Thin Films ◽  
One Step ◽  
Photocatalytic Applications

Titanium dioxide (TiO2) and TiO2/Au/reduced graphene oxide nanocomposite thin films were grown by ultraviolet matrix assisted pulsed laser evaporation in controlled O2 or N2 atmospheres.

ANTIMICROBIAL TESTING, MORPHOLOGICAL CHARACTERIZATION, AND SURFACE POTENTIAL MAPPING OF SILVER-POLY-(METHYL METHACRYLATE) NANOCOMPOSITE FILMS MADE THROUGH MATRIX-ASSISTED PULSED LASER DEPOSITION AGAINST S. AUREUS

Nano LIFE ◽  
2010 ◽  
Vol 01 (01n02) ◽  
pp. 145-152
Author(s):  
MISHAE KHAN ◽  
SHAUN D. GITTARD ◽  
ROGER J. NARAYAN ◽  
DANIEL M BUBB
Keyword(s):  
Thin Films ◽  
Antimicrobial Activity ◽  
Methyl Methacrylate ◽  
Pulsed Laser Deposition ◽  
Surface Potential ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Laser Evaporation ◽  
Poly Methyl Methacrylate ◽  
Nanocomposite Thin Films

Silver-poly(methyl methacrylate) nanocomposite thin films were deposited on silicon substrates by means of matrix-assisted pulsed laser deposition. Atomic force microscopy revealed that the surface morphologies of the silver-poly(methyl methacrylate) nanocomposite thin films were dependent on the matrix-assisted pulsed laser evaporation processing parameters. Films produced using 4% (by weight of solvent) silver nanoparticles exhibited the highest antimicrobial activity. Antimicrobial activity of the thin films was dependent on the silver concentration, the microenvironment created by the polymer–silver interaction, and the surface potential.

Fabrication and Raman Analysis of ZnSe Quantum Dots in Glass Matrix Thin Films by Pulsed Laser Evaporation

1998 ◽  
Vol 37 (Part 1, No. 7A) ◽  
pp. 4154-4157 ◽  
Author(s):  
Hisashi Sakai ◽  
Takeyoshi Tamaru ◽  
Tsunetaka Sumomogi ◽  
Hiromichi Ezumi ◽  
Bruno Ullrich
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Glass Matrix ◽  
Pulsed Laser ◽  
Laser Evaporation ◽  
Raman Analysis

scholarly journals A Brief Review on Conducting Polymer Nanocomposite Based Epoxy Coatings for Marine Applications

2021 ◽  
Vol 1127 (1) ◽  
pp. 012013
Author(s):  
A.M Fitriya ◽  
Syed Shahabuddin ◽  
Nanthini Sridewi ◽  
M. Norsyarizad ◽  
A.K. Pandey
Keyword(s):  
Conducting Polymer ◽  
Polymer Nanocomposite ◽  
Epoxy Coatings ◽  
Conducting Polymer Nanocomposite ◽  
Marine Applications
Sign in / Sign up

Export Citation Format

Share Document