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Nanotwinning and structural phase transition in CdS quantum dots

Overview of attention for article published in Nanoscale Research Letters, October 2012
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Title
Nanotwinning and structural phase transition in CdS quantum dots
Published in
Nanoscale Research Letters, October 2012
DOI 10.1186/1556-276x-7-584
Pubmed ID
Authors

Pragati Kumar, Nupur Saxena, Ramesh Chandra, Vinay Gupta, Avinash Agarwal, Dinakar Kanjilal

Abstract

Nanotwin structures are observed in high-resolution transmission electron microscopy studies of cubic phase CdS quantum dots in powder form by chemical co-precipitation method. The deposition of thin films of nanocrystalline CdS is carried out on silicon, glass, and TEM grids keeping the substrates at room temperature (RT) and 200°C by pulsed laser ablation. These films are then subjected to thermal annealing at different temperatures. Glancing angle X-ray diffraction results confirm structural phase transitions after thermal annealing of films deposited at RT and 200°C. The variation of average particle size and ratio of intensities in Raman peaks I2LO/I1LO with annealing temperature are studied. It is found that electron-phonon interaction is a function of temperature and particle size and is independent of the structure. Besides Raman modes LO, 2LO and 3LO of CdS at approximately 302, 603, and 903 cm-1 respectively, two extra Raman modes at approximately 390 and 690 cm-1 are studied for the first time. The green and orange emissions observed in photoluminescence are correlated with phase transition.

Mendeley readers

The data shown below were compiled from readership statistics for 83 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
India 1 1%
Unknown 82 99%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 34 41%
Researcher 9 11%
Student > Doctoral Student 8 10%
Student > Master 5 6%
Professor > Associate Professor 4 5%
Other 13 16%
Unknown 10 12%
Readers by discipline Count As %
Materials Science 24 29%
Physics and Astronomy 16 19%
Chemistry 12 14%
Chemical Engineering 5 6%
Engineering 3 4%
Other 2 2%
Unknown 21 25%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 October 2012.
All research outputs
#11,048,818
of 12,429,961 outputs
Outputs from Nanoscale Research Letters
#453
of 798 outputs
Outputs of similar age
#119,852
of 140,990 outputs
Outputs of similar age from Nanoscale Research Letters
#19
of 79 outputs
Altmetric has tracked 12,429,961 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 798 research outputs from this source. They receive a mean Attention Score of 2.2. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 140,990 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 79 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.