Enhancement in green and NIR emissions of Er3+ by energy transfer from ZnSe nanoparticles in borosilicate glass

2021 ◽  
Vol 863 ◽  
pp. 158428
Author(s):  
Nilanjana Shasmal ◽  
Walter José Gomes Juste Faria ◽  
Andrea Simone Stucchi de Camargo ◽  
Ana Candida Martins Rodrigues
Keyword(s):  
Energy Transfer ◽  
Borosilicate Glass ◽  
Znse Nanoparticles

Photoluminescence Decay Dynamics and Mechanism of Energy Transfer in Undoped and Mn2+ Doped ZnSe Nanoparticles

2005 ◽  
Vol 5 (9) ◽  
pp. 1492-1497 ◽  
Author(s):  
Edward M. Olano ◽  
Christian D. Grant ◽  
Thaddeus J. Norman ◽  
Edward W. Castner ◽  
Jin Z. Zhang
Keyword(s):  
Energy Transfer ◽  
Znse Nanoparticles ◽  
Photoluminescence Decay

Spectroscopic properties and energy transfer study of Nd 3+ /Yb 3+ co-doped in borosilicate glass for 1.0 μm emission

2016 ◽  
Vol 177 ◽  
pp. 361-365 ◽  
Author(s):  
Kexuan Han ◽  
Fengxia Yu ◽  
Yanyan Guo ◽  
Dechun Zhou ◽  
Weili Dong
Keyword(s):  
Energy Transfer ◽  
Borosilicate Glass ◽  
Spectroscopic Properties ◽  
Transfer Study ◽  
Co Doped

Energy transfer analysis of Tb3+and Yb3+ions doped in borosilicate glass

2012 ◽  
Author(s):  
Takenobu Suzuki ◽  
Kento Mizuno ◽  
Yasutake Ohishi
Keyword(s):  
Energy Transfer ◽  
Borosilicate Glass

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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