Optical emission spectroscopy and time-of-flight investigations of plasmas generated from AlN targets in cases of pulsed laser deposition with sub-ps and ns ultraviolet laser pulses

2003 ◽  
Vol 93 (4) ◽  
pp. 2244-2250 ◽  
Author(s):  
Carmen Ristoscu ◽  
Ion N. Mihailescu ◽  
Michalis Velegrakis ◽  
Maria Massaouti ◽  
Argyro Klini ◽  
...  
Vacuum ◽  
2013 ◽  
Vol 90 ◽  
pp. 151-154 ◽  
Author(s):  
Chen Hon Nee ◽  
Seong Shan Yap ◽  
Wee Ong Siew ◽  
Turid Worren Reenaas ◽  
Teck Yong Tou

2021 ◽  
Vol 127 (10) ◽  
Author(s):  
S. Irimiciuc ◽  
J. More-Chevalier ◽  
S. Chertpalov ◽  
L. Fekete ◽  
M. Novotný ◽  
...  

2020 ◽  
Author(s):  
Stefan Andrei Irimiciuc ◽  
Norina Forna ◽  
Andrei Agop ◽  
Maricel Agop ◽  
Stefan Toma ◽  
...  

Understanding the underline fundamental mechanism behind experimental and industrial technologies embodies one of the foundations of the advances and tailoring new materials. With the pulsed laser deposition being one of the key techniques for obtaining complex biocompatible materials with controllable stoichiometry, there is need for experimental and theoretical advancements towards understanding the dynamics of multi component plasmas. Here we investigate the laser ablation process on Cu-Mn-Al and Fe-Mn-Si by means of space-and time-resolved optical emission spectroscopy and fast camera imaging. In a fractal paradigm the space–time homographic transformations were correlated with the global dynamics of the ablation plasmas.


2006 ◽  
Vol 252 (13) ◽  
pp. 4667-4671 ◽  
Author(s):  
Nikoletta Jegenyes ◽  
Zsolt Toth ◽  
Bela Hopp ◽  
Jozsef Klebniczki ◽  
Zsolt Bor ◽  
...  

2009 ◽  
Vol 67 ◽  
pp. 127-130 ◽  
Author(s):  
Majumdar Sayanee ◽  
Banerji Pallab

In the present study we have used urea as the source for doping nitrogen in ZnO since the most successful acceptor type dopant is the group V element like nitrogen. The nitrogen doped ZnO films have been deposited on glass substrates using Pulsed Laser Deposition technique using 248 nm KrF laser at energy 300 mJ by varying the number of laser pulses with a repetition rate of 10 pulse/sec in vacuum (10-6 mbar) at a constant temperature of 300 °C. The XRD pattern confirms the formation of wurtzite structure of ZnO, which is polycrystalline in nature. We have also performed UV absorption spectroscopy and the band gap is found to be 3.4 eV. Resistivity of the film increases with the increase of thickness for the undoped ZnO samples where the carrier concentrations are found to be of the order of 1017 cm-3. The mobility of the as-grown film is found to be 24.9 cm2/V-s. After doping with nitrogen the carrier concentration drops to the order of 1015 cm-3 and the mobility becomes 1.5 cm2/V-s. The mobility slightly varies with thickness. The resistivity increases to 1.3 KΩ-cm and the film shows p-type behavior. The results are explained on the basis of the available theory.


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