Now showing items 41-49 of 49
White light generating semiconductor nanocrystal luminophors with high photometric quality
We proposed and demonstrated warm white light generating combinations of semiconductor nanocrystal quantum dot emitters with high photometric quality including high color rendering index (~80) on LED platforms to meet ...
Colloidal Nanocrystals Embedded in Macrocrystals: Robustness, Photostability, and Color Purity
(American Chemical Society, 2012-09-14)
The incorporation of colloidal quantum dots (QDs) into ionic crystals of various salts (NaCl, KCl, KBr, etc.) is demonstrated. The resulting mixed crystals of various shapes and beautiful colors preserve the strong ...
Observation of efficient transfer from Mott-Wannier to Frenkel excitons in a hybrid semiconductor quantum dot-polymer composite at room temperature
(American Institute of Physics, 2010-12-29)
Efficient conversion from Mott-Wannier to Frenkel excitons is observed at room temperature. The time-resolved photoluminescence shows that the energy transfer rate and efficiency reach 0.262 ns-1 and 80.9%, respectively. ...
Nanocrystal-based hybrid white light generation with tunable colour parameters
(Institute of Physics Publishing Ltd., 2007)
We present the hybridization of CdSe/ZnS core-shell nanocrystals (NCs) on InGaN/GaN based blue/near-UV LEDs to generate light widely tunable across the visible spectral range and especially within the white region of the ...
Bio-nanohybrids of quantum dots and photoproteins facilitating strong nonradiative energy transfer
(Royal Society of Chemistry, 2013-05-21)
Utilization of light is crucial for the life cycle of many organisms. Also, many organisms can create light by utilizing chemical energy emerged from biochemical reactions. Being the most important structural units of the ...
Unraveling the ultralow threshold stimulated emission from CdZnS/ZnS quantum dot and enabling high ‐ Q microlasers
(Wiley-VCH Verlag, 2015)
The newly engineered ternary CdZnS/ZnS colloidal quantum dots (CQDs) are found to exhibit remarkably high photoluminescence quantum yield and excellent optical gain properties. However, the underlying mechanisms, which ...
Nanocrystal emitters for enhanced photovoltaics in UV
[No abstract available]
High scotopic/photopic ratio white-light-emitting diodes integrated with semiconductor nanophosphors of colloidal quantum dots
(Optical Society of America, 2011)
We propose and demonstrate single-chip white-light-emitting diodes (WLEDs) integrated with semiconductor nanophosphors of colloidal quantum dots for high scotopic/photopic (S/P) ratio. These color conversion WLEDs achieve ...
Highly efficient nonradiative energy transfer using charged CdSe/ZnS nanocrystals for light-harvesting in solution
(American Institute of Physics, 2009-07-20)
We propose and demonstrate highly efficient nonradiative Förster resonance energy transfer (FRET) facilitated by the use of positively charged CdSe/ZnS core-shell nanocrystals (NCs) for light-harvesting in solution. With ...