Synthesis and optical study of green light emitting polymer coated CdSe/ZnSe core/shell nanocrystals

Journal Article · Wed May 15 04:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.01.023· OSTI ID:22290426

Sharma, Mamta ^[1]

---

1. Department of Physics, Center of Advanced Study in Physics, Panjab University, Chandigarh 160 014 (India)

Highlights: ► Synthesis of Polymer coated core CdSe and CdSe/ZnSe core/shell NCs. ► From TEM image, the spherical nature of CdSe and CdSe/ZnSe is obtained. ► Exhibiting green band photoemission peak at 541 nm and 549 nm for CdSe core and CdSe/ZnSe core/shell NCs. ► The shell thickness has been calculated by using superposition of quantum confinement energy model. - Abstract: CdSe/ZnSe Core/Shell NCs dispersed in PVA are synthesized by chemical method at room temperature. This is characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV/Vis spectra and photoluminescence spectroscopy (PL). TEM image shows the spherical nature of CdSe/ZnSe core/shell NCs. The red shift of absorption and emission peak of CdSe/ZnSe core/shell NCs as compared to CdSe core confirmed the formation of core/shell. The superposition of quantum confinement energy model is used for calculation of thickness of ZnSe shell.

• OSTI ID: 22290426
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 5 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM SELENIDES
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOEMISSION
PHOTOLUMINESCENCE
PVA
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
THICKNESS
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION
ZINC SELENIDES