Sol−Gel Derived Urea Cross-Linked Organically Modified Silicates. 2. Blue-Light Emission

1999 ◽  
Vol 11 (3) ◽  
pp. 581-588 ◽  
Author(s):  
L. D. Carlos ◽  
V. de Zea Bermudez ◽  
R. A. Sá Ferreira ◽  
L. Marques ◽  
M. Assunção
Keyword(s):  
Blue Light ◽  
Light Emission ◽  
Sol Gel ◽  
Blue Light Emission ◽  
Organically Modified Silicates ◽  
Organically Modified

Blue light emission from Eu2+ ions in sol–gel-derived Al2O3–SiO2 glasses

2009 ◽  
Vol 129 (9) ◽  
pp. 1055-1059 ◽  
Author(s):  
Yukari Kishimoto ◽  
Xiaoting Zhang ◽  
Tomokatsu Hayakawa ◽  
Masayuki Nogami
Keyword(s):  
Blue Light ◽  
Light Emission ◽  
Sol Gel ◽  
Blue Light Emission

Blue light emission from trivalent cerium doped in sol-gel silica glass

2017 ◽  
Author(s):  
Seika Tokumitsu ◽  
Yukon Murakami ◽  
Hisaya Oda ◽  
Yutaka Kawabe
Keyword(s):  
Blue Light ◽  
Silica Glass ◽  
Light Emission ◽  
Sol Gel ◽  
Blue Light Emission ◽  
Trivalent Cerium

Non-aqueous sol–gel synthesis of hybrid rare-earth-doped γ-Ga2O3nanoparticles with multiple organic–inorganic-ionic light-emission features

2015 ◽  
Vol 3 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Roberto Lorenzi ◽  
Alberto Paleari ◽  
Nikita V. Golubev ◽  
Elena S. Ignat'eva ◽  
Vladimir N. Sigaev ◽  
...  
Keyword(s):  
Rare Earth ◽  
Benzyl Alcohol ◽  
Blue Light ◽  
Light Emission ◽  
Sol Gel ◽  
Blue Light Emission ◽  
Capping Layer ◽  
Organic Capping ◽  
Sol Gel Synthesis ◽  
Rare Earth Doped

Pure and Eu-doped γ-Ga2O3nanopowders with an organic capping layer were obtained by a benzyl alcohol route. Photoluminescence experiments allowed assigning the strong blue light emission to an aromatic ketone derivative.

The critical role of the coordination sphere in the high-efficiency blue-light emission from aminopyrazine metal-organic polymers

2021 ◽  
Vol 186 ◽  
pp. 109025
Author(s):  
João Humberto Dias Campos ◽  
Meiry Edivirges Alvarenga ◽  
Maykon Alves Lemes ◽  
José Antônio do Nascimento Neto ◽  
Freddy Fernandes Guimarães ◽  
...  
Keyword(s):  
Blue Light ◽  
Coordination Sphere ◽  
High Efficiency ◽  
Light Emission ◽  
Critical Role ◽  
Organic Polymers ◽  
Blue Light Emission ◽  
Metal Organic

Enhanced blue-light emission on Cd0.9-xZn0.1CrxS(0 ≤ x ≤ 0.05) quantum dots

2019 ◽  
Vol 45 (3) ◽  
pp. 3833-3838 ◽  
Author(s):  
I. Devadoss ◽  
P. Sakthivel ◽  
S. Muthukumaran ◽  
N. Sudhakar
Keyword(s):  
Quantum Dots ◽  
Blue Light ◽  
Light Emission ◽  
Blue Light Emission

LUMINESCENCE BEHAVIOR AND MECHANISM OF LIGHT-EMITTING POROUS SILICON

1994 ◽  
Vol 08 (02) ◽  
pp. 69-92 ◽  
Author(s):  
XUN WANG
Keyword(s):  
Porous Silicon ◽  
Blue Light ◽  
Light Emission ◽  
Energy State ◽  
Surface Recombination Velocity ◽  
Luminescence Spectroscopy ◽  
Carrier Injection ◽  
Blue Light Emission ◽  
Light Emitting ◽  
Si Nanostructures

In this review article, we give a new insight into the luminescence mechanism of porous silicon. First, we observed a “pinning” characteristic of photoluminescent peaks for as-etched porous silicon samples. It was explained as resulting from the discontinuous variation of the size of Si nanostructures, i.e. the size quantization. A tight-binding calculation of the energy band gap widening versus the dimension of nanoscale Si based on the closed-shell Si cluster model agrees well with the experimental observations. Second, the blue-light emission from porous silicon was achieved by using boiling water treatment. By investigating the luminescence micrographic images and the decaying behaviors of PL spectra, it has been shown that the blue-light emission is believed to be originated from the porous silicon skeleton rather than the surface contaminations. The conditions for achieving blue light need proper size of Si nanostructures, low-surface recombination velocity, and mechanically strong skeleton. The fulfillment of these conditions simultaneously is possible but rather critical. Third, the exciton dynamics in light-emitting porous silicon is studied by using the temperature-dependent and picosecond time-resolved luminescence spectroscopy. A direct evidence of the existence of confined excitons induced by the quantum size effect has been revealed. Two excitation states are found to be responsible for the visible light emission, i.e. a higher lying energy state corresponding to the confined excitons in Si nanostructures and a lower lying state related with surfaces of Si wires or dots. A picture of the carrier transfer between the quantum confined state and the surface localized state has been proposed. Finally, we investigated the transient electroluminescence behaviors of Au/porous silicon/Si/Al structure and found it is very similar to that of an ordinary p-n junction light-emitting diode. The mechanism of electroluminescence is explained as the carrier injection through the Au/porous silicon Schotky barrier and the porous silicon/p-Si heterojunction into the corrugated Si wires, where the radiative recombination of carriers occurs.

scholarly journals The fabrication of nc-Si/SiO2 multilayers and blue-light emission

2003 ◽  
Vol 52 (4) ◽  
pp. 989
Author(s):  
Sui Yan-Ping ◽  
Ma Zhong-Yuan ◽  
Chen Kun-Ji ◽  
Li Wei ◽  
Xu Jun ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emission ◽  
Blue Light Emission
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