Multiplier effect of sensitization for Dy3+ fluorescence in borosilicate glass phosphor

2020 ◽  
Vol 221 ◽  
pp. 117062 ◽  
Author(s):  
H. Zhang ◽  
P.J. Lin ◽  
J.L. Yuan ◽  
E.Y.B. Pun ◽  
D.S. Li ◽  
...  
Keyword(s):  
Borosilicate Glass ◽  
Multiplier Effect ◽  
Glass Phosphor

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.

A Study of Optical Properties of a Glass Composition of a ZnO-Bi2O3-P2O5 Glass/Phosphor Composite for a White LED

2015 ◽  
Vol 48 (6) ◽  
pp. 145-150
Author(s):  
Bong-Ki Ryu ◽  
Il-Gu Kim ◽  
Young-Seok Kim ◽  
Jong-Hwan Kim ◽  
Jae-Yeop Jung ◽  
...  
Keyword(s):  
Optical Properties ◽  
Glass Composition ◽  
White Led ◽  
Glass Phosphor

On the Concept of the Foreign Exchange Multiplier

1975 ◽  
Vol 14 (2) ◽  
pp. 233-237
Author(s):  
J. Diamond
Keyword(s):  
Foreign Exchange ◽  
Realistic Model ◽  
Domestic Production ◽  
Supply Elasticity ◽  
Aggregate Supply ◽  
Multiplier Effect ◽  
Special Case

Although in recent years there has been increasing recognition of the import¬ance of intermediary imports, the conventional Keynesian treatment of aggregate " supply has-generally been adopted. By assuming supply elasticity and conditions of over-production, such imports are treated as a leakage and-therefore deflationary. This paper investigates another special case which may be a more realistic model for many industrialising economies like Pakistan. Namely, J,y assuming supply bottlenecks and the technical dependence of domestic production on imported inputs, an increase in imports may be inflationary and have an import or foreign exchange multiplier effect.

Problems and prospects of innovative development of enterprises of agroindustrial business

2018 ◽  
pp. 13-16
Author(s):  
O. N. Kolomyts
Keyword(s):  
Agricultural Sector ◽  
Maximum Effect ◽  
Innovative Development ◽  
Innovation Development ◽  
Agricultural Enterprises ◽  
Barriers To Innovation ◽  
Multiplier Effect

The article deals with the main barriers to innovation development directly or indirectly affecting the activities of agricultural enterprises. The directions of development of innovations in the enterprises of the agricultural sector are proposed, which will lead to the maximum effect in terms of the multiplier effect on the economy as a whole.

Exhibition and Trade Fair Activity and Economic Crises: response measures and factors for recovery

Communicology ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 80-89
Author(s):  
A.A. Nazarov
Keyword(s):  
Trade Fair ◽  
Government Support ◽  
Economic Sectors ◽  
Current Crisis ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Multiplier Effect ◽  
Response Measures ◽  
The Impact ◽  
Exhibition Industry

The paper represents the analysis of the impact on the exhibition and trade fair activity of the Russian Federation during crisis situations caused by external factors. The author examined the major anticrisis measures, industry statistics and the main trends in the postcrisis phase. The fundamental role of the exhibition industry as a tool is caused by stimulation of economic sectors recovery from the crisis due to the multiplier effect. The particular relevance of the article is justified by a comprehensive study of the state of the industry during the current crisis caused by the COVID-19 pandemic. The author provides an overview of main government support measures for the industry and explains factors that have reduced some of these measures. Also, the author examined in detail activities of non-governmental organizations and associations of the exhibition industry in lobbying for the provision of state support and educational and legal assistance to Russian exhibition companies. Thus, the importance of coordinating activities of all participants in the exhibition industry and, in particular, further consolidation of interaction at the level of industry associations, becomes apparent. Besides, the author suggests a number of measures, such as highlighting exhibitions, trade fairs and congresses from the list of mass events following the example of Germany, introducing insurability for exhibition organizers in case of postponement or cancellation of events due to emergency circumstances, standardizing public health and hygiene rules. Their practical application should mitigate the way out of the current situation.

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