Skip to main content
padlock icon - secure page this page is secure

Open Access Efficient blue luminescence from HfO2 colloidal nanocrystals

Download Article:
 Download
(PDF 3,861.9 kb)
 
In this study, a novel sol–gel route was used to synthesize high-quality HfO2 colloidal nanocrystals. Several techniques were employed to characterize the HfO2 colloidal nanocrystals. Two excitation peaks one at 316, and other at 366 nm wavelengths were observed in absorption spectrum. Also, a strong blue light wave was emitted by the HfO2 sol. High resolution transmission electron microscopy (HR-TEM) demonstrated that the average diameter of HfO2 nanocrystals is about 5 nm. X-ray diffraction (XRD) pattern showed that the phase of HfO2 colloidal nanocrystals is orthorhombic. With use of PL measurements, we demonstrated that the quantum efficiency for HfO2 sol is 68.2% within 340 nm excitation wavelength. The observation results confirmed that the synthesized HfO2 colloidal nanocrystals with strong blue emission have enough potential for photonics applications. The mentioned optical properties are reported for the first time.
No References for this article.
No Supplementary Data.
No Article Media
No Metrics

Keywords: BLUE EMISSION; COLLOIDAL NANOCRYSTALS; HFO2

Document Type: Research Article

Publication date: February 1, 2017

More about this publication?
  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more