1Department of Photonic Semiconductor Structures, V. Lashkaryov Institute of Semiconductor Physics, Nauki Prsp. 41, Kyiv, 03028, Ukraine
2Department of Nanoporous and Nanosized Carbon Materials, O. Chuiko Institute of Surface Chemistry, G. Naumova 13, Kyiv, 03164, Ukraine
Adv. Mater. Lett., 2017, 8 (4), pp 336-341
DOI: 10.5185/amlett.2017.1412
Publication Date (Web): Mar 14, 2017
Copyright © IAAM-VBRI Press
E-mail: lakar@kartel.kiev.ua
We synthesized light-emitting coatings of CdS nanocrystals in polyethyleneimine and polyethyleneimine with multiwall carbon nanotubes on macroporous silicon. The photoluminescence of CdS nanocrystals in polyethyleneimine on oxidized macroporous Si is more intense in comparison with substrates c-Si, macroporous Si, and macroporous Si with a microporous layer, and is maximal for structures with maximal intensity of the local electric field at the Si-SiO2 interface. This indicates a significant decrease of non-radiative recombination in the CdS-polyethyleneimine layer due to electron flow from the silicon matrix to the nanocrystal layer. The photoluminescence of polyethyleneimine with carbon multiwall nanotubes on macroporous Si with a microporous layer is about six times more intense in comparison with substrates c-Si, macroporous Si and oxidized macroporous Si. This indicates a non-radiative proton recombination decrease due to hydrogen atoms on the boundary between Si matrix with microporous layer and “polymer-nanoparticles” coating.
Water and Sanitation Management: During and after COVID-19 Pandemic
Polymeric Energy Materials: Development and Challenges
Influence of Different Copolymer Based Compatibilizers on Performance of Pristine and Recycled PP/PE blends
Bio Ceramics: New Material from Mangrove Bark
Hybrid Physical Chemical Vapour Deposition (HPCVD) of Superconducting MgB2 Thin Films on three Dimensional Copper Substrates
Photoinduced Electron Transfer Reactions of tris(4,4’-dimethoxy-2,2’-bipyridyl)ruthenium(II)cation with Quinones in Aqueous Medium
A Comparative Study of Green Synthesized AgNPs using Carissa Carandas and Nerium indicum Leaves and its Activities against Selected Human Pathogens and MCF 7 Cell
Design and Modelling of Carbon Fiber Grid Structure based Carbon/Epoxy Composites for Enhanced Microwave Absorbing Properties
Elaboration and Characterization of Macroporous Bioceramics using Polymeric Sponge Replication Method
Advanced Healthcare Biomaterials
Piezoelectric Alternative Energy Sources as a Part of the Global Energy Concerns – Future Prospects in the Science and Market
Rectify the Injury-Induced Microenvironment Imbalance in Peripheral Nerve Repair
A Mini Review on Biodegradable Magnesium Alloy Vascular Stent
Prospective Applications of Marine Oriented Materials in the Repair of Peripheral Nerve Injury
Design and Implementation of Dynamic FPAA Based Interface Circuit for Thin Film Lead-Free Piezoelectric Sensors
An Аpproach for Nanostructuring of Piezoelectric Materials by Template-assisted Growth in Porous Aluminum Oxide
Study of Sputtered Barium Strontium Titanate Films for Energy Harvesting Applications
The Effect of Bias on Properties of DLC Coatings for Artificial Joints
Fabrication of Tens-micron-sized Functionalized Polystyrene Microspheres for Utilization in Chiral Drug Isolation
Copyright ©2010-2020 VBRI Press
Full Article