Pinned Luminescence Emission and Absorbance Band from Ultrasmall Ball-Milled Cd0.3Zn0.7Se Nanocrystals
Joint Authors
Zainal, Zulkarnain
Talib, Zainal Abidin
Liew, Josephine Ying Chi
Muhd, Ibrahim B.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-29
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
We report the pinned absorbance and emission spectra of Cd0.3Zn0.7Se nanocrystals synthesized via mechanical alloying.
The first emission peaks of Cd0.3Zn0.7Se nanocrystals milled for 5 and 10 h are observed at 3.36 eV, while the absorbance spectra of those milled for 10 and 20 h are observed at 4.47 eV.
The emission peaks of nanocrystals milled for 5, 10, and 20 h have broad emissions centered at 2.90, 2.88, and 2.92 eV, respectively.
Transmission electron microscopy histogram shows that each nanocrystal size distribution has a single population maxima of <2 nm.
In addition, the center of each size distribution shifts toward the ultrasmall particles upon continuous milling.
Particle sizes (d) of 0.73 nm are calculated from the first excitonic peaks of the pinned absorbance bands through the semiempirical sizing equation.
The continuous reduction in particle sizes increases the surface-to-volume ratios of the nanocrystals.
This increase eventually results in an increase in the surface states that translate into low photoluminescence intensity of pinned emission.
American Psychological Association (APA)
Muhd, Ibrahim B.& Talib, Zainal Abidin& Zainal, Zulkarnain& Liew, Josephine Ying Chi. 2017. Pinned Luminescence Emission and Absorbance Band from Ultrasmall Ball-Milled Cd0.3Zn0.7Se Nanocrystals. Journal of Nanomaterials،Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1182768
Modern Language Association (MLA)
Muhd, Ibrahim B.…[et al.]. Pinned Luminescence Emission and Absorbance Band from Ultrasmall Ball-Milled Cd0.3Zn0.7Se Nanocrystals. Journal of Nanomaterials No. 2017 (2017), pp.1-6.
https://search.emarefa.net/detail/BIM-1182768
American Medical Association (AMA)
Muhd, Ibrahim B.& Talib, Zainal Abidin& Zainal, Zulkarnain& Liew, Josephine Ying Chi. Pinned Luminescence Emission and Absorbance Band from Ultrasmall Ball-Milled Cd0.3Zn0.7Se Nanocrystals. Journal of Nanomaterials. 2017. Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1182768
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1182768