Core‐Shell Fluorescent Polymeric Particles with Tunable White Light Emission Based on Aggregation Microenvironment Manipulation

A series of core–shell structure materials based on Ln-dpa complex and silica are prepared and the complex coating are generated on the surface of silica pheres successfully. The SiO2@Ln-dpa exhibits excellent luminescence properties. Furthermore, SiO2@Eu-dpa possesses highly selective and sensitive for acetone and Cu2+.

Download Full-text

Fabrication of a light-emitting device based on the CdS/ZnS spherical quantum dots

Journal of the European Optical Society Rapid Publications ◽

10.1186/s41476-021-00173-8 ◽

2021 ◽

Vol 17 (1) ◽

Author(s):

Kobra Hasanirokh ◽

Asghar Asgari ◽

Saber Mohammadi

Keyword(s):

Quantum Dots ◽

Current Density ◽

White Light ◽

Light Emission ◽

Blue Emission ◽

White Light Emission ◽

Core Shell ◽

Device Structure ◽

Light Emitting ◽

Particle Layer

AbstractIn this work, we focus on the colloidal quantum dot based light-emitting diodes (QD-LEDs) performance. First, we synthesize the spherical QDs with a CdS core that covered with a wider band gap II–VI semiconductor acting as a shell (ZnS). In order to synthesize this nano crystal QDs with structure of CdS/ZnS/CdS/ZnS, we use a reverse micelle process. These four-layer quantum well quantum dots (QWQDs) can generate the white light emission. The positional design of different layers i.e., core/shell QD emitters is a critical factor for white emissive devices. The blue emission generated by CdS core mixes with green/orange components originating from ZnS inner shell and creates an efficiency white light emission. Then, we fabricate a white-QDLED with a device structure of FTO/ ZnO / QD / CBP/ MoO3 / Al films. A thin film of CdS/ZnS/CdS/ZnS QDs is deposited by electrostatically assembled colloidal QD solutions. The experimental results show that the emission spectra of QDs and current density through the LED are controlled by varying the particle sizes. The peaks of absorbance and Photoluminescence (PL) spectrums for core/shell structures get the red shifted as the dot size increases. Furthermore, this QD-LED with a smaller nano particle layer has a higher current density.

Download Full-text

Near white light emission and enhanced photocatalytic activity by tweaking surface defects of coaxial ZnO@ZnS core-shell nanorods

Journal of Applied Physics ◽

10.1063/1.4980011 ◽

2017 ◽

Vol 121 (14) ◽

pp. 144301 ◽

Cited By ~ 5

Author(s):

Partha Kumbhakar ◽

Subrata Biswas ◽

Chandra S. Tiwary ◽

Pathik Kumbhakar

Keyword(s):

Photocatalytic Activity ◽

White Light ◽

Surface Defects ◽

Light Emission ◽

White Light Emission ◽

Core Shell

Download Full-text

A dual-functional upconversion core@shell nanostructure for white-light-emission and temperature sensing

Journal of Materials Chemistry C ◽

10.1039/c6tc02218a ◽

2016 ◽

Vol 4 (27) ◽

pp. 6516-6524 ◽

Cited By ~ 60

Author(s):

Min Xu ◽

Daqin Chen ◽

Ping Huang ◽

Zhongyi Wan ◽

Yang Zhou ◽

...

Keyword(s):

White Light ◽

Light Emission ◽

White Light Emission ◽

Temperature Sensing ◽

Core Shell ◽

Dual Functional

A strategy to simultaneously achieve white-light-emission and temperature sensing via a 980 nm excitable upconversion core@shell nanoarchitecture design was provided.

Download Full-text

Zinc quinolate complex decorated CuInS2/ZnS core/shell quantum dots for white light emission

Journal of Materials Chemistry C ◽

10.1039/c7tc01751k ◽

2017 ◽

Vol 5 (29) ◽

pp. 7291-7296 ◽

Cited By ~ 11

Author(s):

Sabyasachi Pramanik ◽

Satyapriya Bhandari ◽

Arun Chattopadhyay

Keyword(s):

Quantum Dots ◽

White Light ◽

Light Emission ◽

White Light Emission ◽

Core Shell ◽

Light Emitting

Formation of a zinc-quinolate complex on the surface of CuInS2/ZnS core shell quantum dots leading to the fabrication of an advanced white light emitting nanocomposite.

Download Full-text