Energy transfer and charge carrier capture processes in wide-band-gap scintillators

2007 ◽  
Vol 204 (3) ◽  
pp. 683-689 ◽  
Author(s):  
M. Nikl ◽  
V. V. Laguta ◽  
A. Vedda
Keyword(s):  
Energy Transfer ◽  
Charge Carrier ◽  
Band Gap ◽  
Wide Band ◽  
Wide Band Gap ◽  
Carrier Capture ◽  
Charge Carrier Capture

Alternating 2,7- and 3,6-linked carbazole copolymers as wide band gap energy transfer donors

2009 ◽  
Vol 517 (9) ◽  
pp. 2840-2844 ◽  
Author(s):  
David F. Pickup ◽  
Hunan Yi ◽  
Harismah Kun ◽  
Ahmed Iraqi ◽  
Mathew Stevenson ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
Wide Band ◽  
Band Gap Energy ◽  
Wide Band Gap ◽  
Gap Energy

How Can the Intra-Shell Emissions of Rare Earth and Transition Metal Ions in Thin Films and Nanoparticles Be Stimulated?

2008 ◽  
Vol 140 ◽  
pp. 3-8
Author(s):  
M. Godlewski ◽  
S. Yatsunenko ◽  
A. Opalińska ◽  
Witold Łojkowski
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Rare Earth ◽  
Transition Metal ◽  
Band Gap ◽  
Wide Band ◽  
Transition Metal Ions ◽  
Light Sources ◽  
Wide Band Gap ◽  
New Generation

Nanoparticles of the wide band gap oxides doped with rare earth (RE) ions are prospective materials for application in optoelectronics as phosphors in a new generation of light sources. In this paper the mechanisms of the excitation of efficient 4f-4f intra-shell transitions in RE doped nanoparticles are discussed. These mechanisms either enhance the rate of host to impurity energy transfer or stimulate the intra-shell transitions of RE ions.

Eu3+-activated CaGa2O4 wide band gap (WBG) material for solar blind UV conversion: fluorescence and photo-conductivity performance

2014 ◽  
Vol 2 (37) ◽  
pp. 7918-7926 ◽  
Author(s):  
M. Rai ◽  
S. K. Singh ◽  
K. Mishra ◽  
R. Shankar ◽  
R. K. Srivastava ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
Wide Band ◽  
Defect States ◽  
Energy Bands ◽  
Wide Band Gap ◽  
Schematic Representation ◽  
Solar Blind ◽  
Photo Conductivity

Schematic representation of energy bands/defect states, energy transfer and emission in Na+, Eu3+:CaGa2O4 usable for solar blind UV converter application.

Luminescence of Doped Nanoparticles of Wide Band Gap II-VI Compounds

2007 ◽  
Vol 128 ◽  
pp. 123-134 ◽  
Author(s):  
M. Godlewski ◽  
S. Yatsunenko ◽  
M. Zalewska ◽  
A. Kłonkowski ◽  
Tomas Strachowski ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Band Gap ◽  
Light Emission ◽  
Wide Band ◽  
Medical Applications ◽  
Al Doping ◽  
Wide Band Gap ◽  
Free Carriers ◽  
Emission Enhancement

Nanoparticles of wide band gap II-VI compounds doped with transition metal (TM) or rare earth (RE) ions are perspective phosphor materials and fluorescence labels for optoelectronic, biology and medical applications. The efficiency of 3d-3d and 4f-4f intra-shell transitions is shown to be enhanced in TM, RE doped nanoparticles. Two mechanisms of emission enhancement related to spin dependent interactions of free carriers with impurities are discussed. These interactions enhance the TM, RE intra-shell transitions by increasing the rate of host to impurity energy transfer. It is shown also that Al doping increases the intensity of light emission from ZnO nanoparticles.

Unconventional energy transfer from narrow to broad luminescent wide band gap materials

2019 ◽  
Vol 127 (1) ◽  
pp. 17003
Author(s):  
Satish Laxman Shinde ◽  
Thang Duy Dao ◽  
Tadaaki Nagao ◽  
Karuna Kar Nanda
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
Wide Band ◽  
Wide Band Gap
Sign in / Sign up

Export Citation Format

Share Document