Host–guest luminescent materials based on highly emissive species loaded into versatile sol–gel hosts

2018 ◽  
Vol 47 (37) ◽  
pp. 12813-12826 ◽  
Author(s):  
Kassio P. S. Zanoni ◽  
Leandro P. Ravaro ◽  
Andrea S. S. de Camargo
Keyword(s):  
Optical Materials ◽  
Sol Gel ◽  
Luminescent Materials ◽  
New Host ◽  
Concise Review

By mostly focusing on the findings of our group, this concise review provides insights into the development of promising new host–guest optical materials based on sol–gel assemblies of versatile hosts and highly luminescent guests.

scholarly journals Bulk silica-based luminescent materials by sol-gel processing of non-conventional precursors

2012 ◽  
Vol 101 (17) ◽  
pp. 171908 ◽  
Author(s):  
J. A. Rodríguez ◽  
C. Fernández-Sánchez ◽  
C. Domínguez ◽  
S. Hernández ◽  
Y. Berencén
Keyword(s):  
Sol Gel ◽  
Luminescent Materials ◽  
Bulk Silica ◽  
Gel Processing

scholarly journals Europium incorporated in silica matrix obtained by sol-gel: luminescent materials

2003 ◽  
Vol 6 (4) ◽  
pp. 557-562 ◽  
Author(s):  
Eduardo José Nassar ◽  
Katia Jorge Ciuffi ◽  
Sidney José Lima Ribeiro ◽  
Younes Messaddeq
Keyword(s):  
Sol Gel ◽  
Silica Matrix ◽  
Luminescent Materials

scholarly journals Influence of surface roughness on the light transmission through the boundaries of luminescent materials in radiation detectors-=SUP=-*-=/SUP=-

2021 ◽  
Vol 129 (9) ◽  
pp. 1182
Author(s):  
P. Liaparinos
Keyword(s):  
Surface Roughness ◽  
Optical Sensors ◽  
Optical Materials ◽  
Light Transmission ◽  
Imaging System ◽  
Radiation Detectors ◽  
Optical Signal ◽  
Transmission Factor ◽  
Luminescent Materials ◽  
Intermediate Surface

The optical transfer properties of an imaging system are affected by the performance of the discrete cascaded system stages that transfer efficiently the optical signal. Apart from the contribution of each component to the overall optical propagation, crucial role also plays the intermediate surface conditions. Surface roughness is characterized by irregularities with respect with the ideal smooth form. The degree of roughness has an influence on the surface behavior affecting correspondingly the overall enhancement of system's optical performance. In this manuscript, the angle dependent effect of surface roughness on phosphor . optical materials configuration is provided taking into account eight luminescent materials (CsI, Y3Al5O12, Y2O3, Bi4Ge3O12, CaWO4, ZnS, Lu2O3 and Gd2O2S) and three optical materials (InGaAs, ITO and SiO2). Results showed that higher transmission optical properties exhibited the: (i) CsI-InGaAs combination, (ii) ZnS-ITO and (iii) ZnS-SiO2 combination. The transmission factor was also quantitatively affected by increasing the surface roughness values and by decreasing the incident polar angles. Keywords: luminescent materials, optical sensors, surface roughness

Synthesis of Zn0.2Ca0.8TiO3:0.1Pr3+ by Sol-Gel and its Luminescence Characterization

2013 ◽  
Vol 750-752 ◽  
pp. 877-880
Author(s):  
Yi Shen ◽  
Li Ying Han ◽  
Lu Yao Hou
Keyword(s):  
Treatment Process ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Ultra Violet ◽  
Luminescent Properties ◽  
Luminescent Materials ◽  
Excitation Spectra ◽  
Surface Appearance ◽  
Calcination Temperatures ◽  
Characteristic Emission

The Zn0.2Ca0.8TiO3:0.1Pr3+ luminescent materials were prepared by sol-gel technology. The phase transformation of gel was studied by TG-DTA and XRD in heat treatment process. The luminescent properties of phosphor in different calcination temperatures were determined by fluorescence spectrophotometer, and then the best sintering temperature was confirmed. The luminescent properties of phosphor was obtained through the emission/ excitation spectra. The surface appearance measured with SEM. The results showed that the nanoZn0.2Ca0.8TiO3:0.1Pr3+ phosphor could be obtained by sol-gel, sintering at 900°C. It sent out red fluorescent under the Ultra Violet. This characteristic emission peak at 614nm is associated with the typical 1D23H4 transition of Pr3+ion.

Sol-Gel Optical Materials

1993 ◽  
Vol 23 (1) ◽  
pp. 437-452 ◽  
Author(s):  
L C Klein
Keyword(s):  
Optical Materials ◽  
Sol Gel

A multi-institution collaborative approach to a productive undergraduate research program in material science

2012 ◽  
Vol 1472 ◽  
Author(s):  
A.J. Silversmith ◽  
D.M. Boye ◽  
K.R. Hoffman
Keyword(s):  
Research Program ◽  
Material Science ◽  
Optical Materials ◽  
Undergraduate Research ◽  
Sol Gel ◽  
Student Centered ◽  
Chemistry Students ◽  
Undergraduate Research Program ◽  
Laser Spectroscopic

ABSTRACTWe describe our approach to a student-centered interdisciplinary research program in material science. Our work in the synthesis and optical characterization of sol-gel materials provides an ideal research setting for undergraduates interested in physics and chemistry. Students fabricate all samples and perform laser spectroscopic measurements. The work is accessible to undergraduates but also of current interest to a wide community of scientists interested in new rare earth based optical materials. Students make meaningful contributions to publishable work, and many go on to do graduate work in physics or chemistry. Two recent students have been recognized with national awards for their research, and many have presented work at international meetings.

Sign in / Sign up

Export Citation Format

Share Document