Temperature sensitive optical properties of exciton and room-temperature visible light emission from disordered Cu2O nanowires

RSC Advances ◽  
2014 ◽  
Vol 4 (71) ◽  
pp. 37542-37546 ◽  
Author(s):  
Peng Wang ◽  
Xinhong Zhao ◽  
Hairong Li ◽  
Lingshan Li ◽  
Jing Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
White Light ◽  
Room Temperature ◽  
Light Emission ◽  
Temperature Sensitive ◽  
Excitonic Emission ◽  
First Time ◽  
Visible Light Emission

The excitonic emission of the Cu2O nanowires are demonstrated, and a visible white light is observed for the first time.

scholarly journals Mapping prominence plasma parameters from eclipse observations

2013 ◽  
Vol 8 (S300) ◽  
pp. 420-421
Author(s):  
Sonja Jejčič ◽  
Petr Heinzel ◽  
Maciej Zapiór ◽  
Miloslav Druckmüller ◽  
Stanislav Gunár ◽  
...  
Keyword(s):  
Visible Light ◽  
Electron Density ◽  
Solar Eclipse ◽  
Light Emission ◽  
Total Solar Eclipse ◽  
Quiescent Prominence ◽  
Plasma Parameters ◽  
Eclipse Observations ◽  
First Time ◽  
Visible Light Emission

AbstractUsing the eclipse observations, we construct the maps of quiescent prominence temperatures, electron densities, pressures and geometrical thicknesses. For this we use the RGB signal of prominence visible-light emission detected during the total solar eclipse on August 1, 2008 in Mongolia, and quasi-simultaneous Hα spectra taken at Ondřejov observatory. The method of disentangling the electron density and effective geometrical thickness was described by Jejčič & Heinzel (2009) and is used here for the first time to analyse the spatial variations of various prominence parameters.

Correlation between structural and optical properties of Si nanocrystals embedded in SiO2: The mechanism of visible light emission

2000 ◽  
Vol 77 (20) ◽  
pp. 3143-3145 ◽  
Author(s):  
B. Garrido ◽  
M. López ◽  
O. González ◽  
A. Pérez-Rodrı́guez ◽  
J. R. Morante ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Light Emission ◽  
Structural And Optical Properties ◽  
Si Nanocrystals ◽  
Visible Light Emission

scholarly journals Phase Transition and Optical Properties for Ultrathin KNbO3Nanowires

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Shulin Yang ◽  
Yongming Hu ◽  
Shengfu Wang ◽  
Haoshuang Gu ◽  
Yu Wang
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Light Emission ◽  
Hydrothermal Route ◽  
Photoluminescence Study ◽  
Phase Structures ◽  
Three Phase ◽  
Visible Light Emission

Fascicular KNbO3nanowires with tetragonal perovskite structures and ultrasmall diameters are synthesized by hydrothermal route at about 150°C for 24 hours. The concentrations of medium alkalinity have influenced phase structures and the final morphologies of the products significantly by modifying the conditions in process. The as-prepared KNbO3nanowires exhibit three phase transitions at about 343, 454.7, and 623 K as the temperature increases from 250 to 700 K. The band gap is about 3.78 eV for KNbO3nanowires. Photoluminescence study at room temperature reveals two visible light emission bands peaking at ~551 and 597 nm, respectively, which may be due to the oxygen vacancies, site niobium (occupy the location of Nb), and antisite niobium (occupy the location of K) in KNbO3nanowires.

Iron antimonate quantum dots exhibiting tunable visible light emission

2017 ◽  
Vol 41 (4) ◽  
pp. 1436-1446 ◽  
Author(s):  
Pratanu Nag ◽  
Partha Pratim Das ◽  
Anurag Roy ◽  
Parukuttyamma Sujatha Devi
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Combustion Synthesis ◽  
Light Emission ◽  
Auto Combustion ◽  
Iron Antimonate ◽  
First Time ◽  
Visible Light Emission

In this paper, we report for the first time tunable visible light emission from FeSbO4 quantum dots prepared by an auto-combustion synthesis, a property hitherto unknown for this oxide.

Visible light emission at room temperature from anodized plasma‐deposited silicon thin films

1992 ◽  
Vol 61 (13) ◽  
pp. 1552-1554 ◽  
Author(s):  
E. Bustarret ◽  
M. Ligeon ◽  
J. C. Bruyère ◽  
F. Muller ◽  
R. Hérino ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Room Temperature ◽  
Light Emission ◽  
Silicon Thin Films ◽  
Visible Light Emission
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