Charge carrier pairing can impart efficient reduction efficiency to core/shell quantum dots: applications for chemical sensing

Nanoscale ◽  
2020 ◽  
Vol 12 (45) ◽  
pp. 23052-23060
Author(s):  
Marcell Pálmai ◽  
Eun Byoel Kim ◽  
Vincent P. Schnee ◽  
Preston T. Snee
Keyword(s):  
Quantum Dots ◽  
Charge Carrier ◽  
Chemical Sensing ◽  
Semiconductor Quantum Dots ◽  
Core Shell ◽  
Efficient Reduction ◽  
Reduction Efficiency

Semiconductor quantum dots (QDs) are bright fluorophores that have significant utility for imaging and sensing applica-tions.

Semiconductor Quantum Dots and Core Shell Systems for High Contrast Cellular/Bio Imaging

2021 ◽  
pp. 27-38
Author(s):  
Manikanta Bayal ◽  
Neeli Chandran ◽  
Rajendra Pilankatta ◽  
Swapna S. Nair
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots ◽  
Core Shell ◽  
High Contrast ◽  
Bio Imaging

scholarly journals EXPERIMENTAL STUDY OF 3D SELF-ASSEMBLED PHOTONIC CRYSTALS AND COLLOIDAL CORE-SHELL SEMICONDUCTOR QUANTUM DOTS

2017 ◽  
Vol 24 (1&2) ◽  
pp. 161-170
Author(s):  
Pham Thu Nga ◽  
Vu Duc Chinh ◽  
Nguyen Xuan Nghia ◽  
Nguyen Viet Huy ◽  
Dao Nguyen Thuan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Quantum Dots ◽  
Optical Properties ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Self Assembly ◽  
Photonic Band Gap ◽  
Semiconductor Quantum Dots ◽  
Core Shell ◽  
Sphere Diameter

In this contribution we present an experimental study of 3D opal photonic crystals. The samples are opals constituted by colloidal silica spheres, realized with self-assembly technique. The sphere diameter is selected in order to obtain coupling of the photonic band gap with the emission from CdSe/ZnS colloidal quantum dots. The quantum dots infiltrated in the opals is expected to be enhanced or suppressed depending on the detection angle from the photonic crystal. The structural and optical characterization of the SiO2 opal photonic crystals are performed by field-emission scanning electron microscopy and reflectivity spectroscopy. Measurements performed on samples permits to put into evidence the influence of the different preparation methods on the optical properties. Study of self-activated luminescence of the pure opals is also presented. It is shown that the luminescence of the sample with QDs have original QD emission and not due to the photonic crystal structure. The optical properties of colloidal core-shell semiconductor quantum dots of CdSe/ZnS which are prepared in our lab will be mention.

scholarly journals Ambipolar Charge Storage in Type‐I Core/Shell Semiconductor Quantum Dots toward Optoelectronic Transistor‐Based Memories

2021 ◽  
pp. 2100513
Author(s):  
Hao hu ◽  
Guohao Wen ◽  
Jiamin Wen ◽  
Long‐Biao Huang ◽  
Meng Zhao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots ◽  
Charge Storage ◽  
Core Shell ◽  
Type I
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