scholarly journals Synthesis and Fluorescence Property of Mn-Doped ZnSe Nanowires

2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Dongmei Han ◽  
Chunfeng Song ◽  
Xiaoyu Li
Keyword(s):  
Heavy Metal Ions ◽  
Average Length ◽  
Water Soluble ◽  
Absorbance Spectrum ◽  
Zinc Blende ◽  
Single Well ◽  
Znse Nanowires ◽  
Absorbance Peak ◽  
Mn Doped ◽  
Zinc Blende Structure

Water-soluble Mn-doped ZnSe luminescent nanowires were successfully prepared by hydrothermal method without any heavy metal ions and toxic reagents. The morphology, composition, and property of the products were investigated. The experimental results showed that the Mn-doped ZnSe nanowires were single well crystallized and had a zinc blende structure. The average length of the nanowires was about 2-3 μm, and the diameter was 80 nm. With the increase ofMn2+-doped concentration, the absorbance peak showed large difference. The UV-vis absorbance spectrum showed that the Mn-doped ZnSe nanowires had a sharp absorption band appearing at 360 nm. The PL spectrum revealed that the nanowires had two distinct emission bands centered at 432 and 580 nm.

Synthesis and Characterization of Water-Soluble Cu2+-Doped ZnSe Quantum Dots

2009 ◽  
Vol 79-82 ◽  
pp. 2043-2046 ◽  
Author(s):  
Shan Shan Li ◽  
Fu Tian Liu ◽  
Qun Wang ◽  
Xiu Xiu Chen ◽  
Ping Yang
Keyword(s):  
Quantum Dots ◽  
Green Emission ◽  
Average Diameter ◽  
Water Soluble ◽  
X Ray ◽  
Zinc Blende ◽  
Transmission Electron ◽  
Uv Excitation ◽  
Zinc Blende Structure

Cu2+-doped ZnSe quantum dots (ZnSe:Cu) were prepared via a green and simple route, namely the chemical coprecipitation method. Under 365 nm UV excitation, green emission is observed. X-ray powder diffraction (XRD) shows that ZnSe:Cu nanoparticle is cubic zinc blende structure; the transmission electron microscopy (TEM) exhibits that the average diameter of ZnSe:Cu nanocrystals is less than 10 nm. UV-vis spectrophotometer and fluorescence spectrophotometer indicate that ZnSe:Cu nanocrystals have good fluorescence effects.

Structural and Optical Investigation of Mn-Doped ZnS Nanocrystals

2005 ◽  
Vol 475-479 ◽  
pp. 1795-1798 ◽  
Author(s):  
W.Q. Peng ◽  
S.C. Qu ◽  
G.W. Cong ◽  
Z.G. Wang
Keyword(s):  
Visible Spectrum ◽  
Optical Investigation ◽  
X Ray Diffraction ◽  
High Concentration ◽  
Zinc Blende ◽  
Order Of Magnitude ◽  
Zns Nanocrystals ◽  
Average Size ◽  
Mn Doped ◽  
Zinc Blende Structure

Using a solution-based chemical method, we have prepared ZnS nanocrystals doped with high concentration of Mn2+. The X-ray diffraction analysis confirmed a zinc blende structure. The average size was about 3 nm. Photoluminescence spectrum showed room temperature emission in the visible spectrum, which consisted of the defect-related emission and the 4 T1-6 A1 emission of Mn2+ ions. Compared with the undoped sample, the luminescence of the ZnS:Mn sample is enhanced by more than an order of magnitude, which indicated that the Mn2+ ions can efficiently boost the luminescence of ZnS nanocrystals.

Sputter Deposition of Fe-Co Nitride for Ferromagnetic Granular Nitride Thin Film

2009 ◽  
Vol 631-632 ◽  
pp. 327-331 ◽  
Author(s):  
K. Sakon ◽  
Y. Hirokawa ◽  
Yasuji Masubuchi ◽  
Shinichi Kikkawa
Keyword(s):  
Thin Film ◽  
Solid Solution ◽  
Thermal Decomposition ◽  
Sputter Deposition ◽  
Composite Target ◽  
Zinc Blende ◽  
Alloy Particles ◽  
Sputter Deposited ◽  
Magneto Resistance ◽  
Zinc Blende Structure

Sputter deposited Fe0.7Co0.3 nitride thin film had zinc blende structure. It was thermally decomposed completely back to the ferromagnetic Fe0.7Co0.3 alloy above 400°C. As-deposited nitride thin films obtained in cosputtering of (Fe0.7Co0.3)1-xAlx composite target with nitrogen sputter gas were solid solutions with zinc blende (x≤0.44) and wurtzite (x>0.5) type structure, respectively. The largest magneto resistance ratio of 0.24% was observed on the Fe0.7Co0.3 alloy particles dispersed in AlN thin film obtained by thermal decomposition of the nitride solid solution with x=0.66 at 500°C.

Sublimation sandwich route to ultralong zinc-blende ZnSe nanowires and the cathodoluminescence properties of individual nanowires

2011 ◽  
Vol 509 (7) ◽  
pp. 3306-3309 ◽  
Author(s):  
H.W. Zhu ◽  
P.G. Li ◽  
M. Lei ◽  
L.H. Li ◽  
S.L. Wang ◽  
...  
Keyword(s):  
Zinc Blende ◽  
Znse Nanowires
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