Volume 84, Number 4, November 2008
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||22 October 2008|
CdSe nanoparticles synthesized by laser ablation
Department of Engineering, University of Liverpool - Brownlow Hill, Liverpool, L69 3GH, UK, EU
2 Department of Physics, Aristotle University of Thessaloniki - Thessaloniki, GR-54124, Greece, EU
Corresponding author: email@example.com
Accepted: 9 October 2008
Nanoparticles of the IIVI semiconductor CdSe were synthesized by laser ablation (387 nm, 180 fs, 1 kHz, pulse energy = 4 μJ (fluence = 1 J/ cm2) of the target material in methanol. The nanoparticles size distribution follows a log-normal function with statistical median diameter in the range of ≈ 5 – 6 nm. Their crystalline structure is the same as that of the bulk material and are Se rich (Cd:Se percentage ratio ~ 0.8:1). Strong, spectrally “clean” and relatively narrow photoluminescence emission from the produced nanoparticles was detected in the green (~ 552 nm).
PACS: 79.20.Ds – Laser-beam impact phenomena / 81.07.Ta – Nanoscale materials and structures: fabrication and characterization: Quantum dots / 78.67.Hc – Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures: Quantum dots
© EPLA, 2008
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