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Hassan Seed Ahmed
Hassan Seed Ahmed
associate Professor of Physics, Khartoum University
Verified email at uofk.edu - Homepage
Title
Cited by
Cited by
Year
High efficiency energy transfer in Ce, Tb co-doped silica prepared by sol-gel method
HAAS Ahmed, OM Ntwaeaborwa, RE Kroon
Journal of luminescence 135, 15-19, 2013
462013
Effect of Ga3+ doping on the photoluminescence properties of Y3Al5-xGaxO12: Bi3+ phosphor
A Yousif, V Kumar, HAAS Ahmed, S Som, LL Noto, OM Ntwaeaborwa, ...
ECS Journal of Solid State Science and Technology 3 (11), R222, 2014
442014
Luminescence properties of Bi doped La2O3 powder phosphor
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Journal of Luminescence 209, 217-224, 2019
372019
The energy transfer mechanism in Ce, Tb co-doped LaF3 nanoparticles
HAAS Ahmed, OM Ntwaeaborwa, RE Kroon
Current applied physics 13 (7), 1264-1268, 2013
282013
Stability of Bi doped La2O3 powder phosphor and PMMA composites
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Journal of Physics and Chemistry of Solids 131, 156-163, 2019
202019
Ce decay curves in Ce, Tb co-doped LaF3 and the energy transfer mechanism
RE Kroon, HC Swart, OM Ntwaeaborwa, HAAS Ahmed
Physica B: Condensed Matter 439, 83-87, 2014
202014
Luminescence and electron degradation properties of Bi doped CaO phosphor
A Yousif, RE Kroon, E Coetsee, OM Ntwaeaborwa, HAAS Ahmed, ...
Applied Surface Science 356, 1064-1069, 2015
192015
5D3→ 7FJ emission of Tb doped sol–gel silica
HAAS Ahmed, OM Ntwaeaborwa, MA Gusowski, JR Botha, RE Kroon
Physica B: Condensed Matter 407 (10), 1653-1655, 2012
172012
Luminescence from Ce in sol–gel SiO2
RE Kroon, HAAS Ahmed, OM Ntwaeaborwa, LF Koao, IM Nagpure, ...
Physica B: Condensed Matter 407 (10), 1595-1598, 2012
162012
Photoluminescence, thermoluminescence, and cathodoluminescence of optimized cubic Gd2O3: Bi phosphor powder
MHM Abdelrehman, RE Kroon, A Yousif, HAA Seed Ahmed, HC Swart
Journal of Vacuum Science & Technology A 38 (6), 2020
132020
Luminescence properties and cathodoluminescence degradation of Bi doped SrO powder
MHM Abdelrehman, RE Kroon, A Yousif, HAA Seed Ahmed, HC Swart
Journal of Vacuum Science & Technology B 37 (1), 2019
122019
Concentration quenching of Eu2+ doped Ca2BO3Cl
HAAS Ahmed, HC Swart, P Bergman, RE Kroon
Materials Research Bulletin 75, 47-50, 2016
122016
Cathodoluminescence degradation of Bi doped La2O3 and La2O2S phosphor powders
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Physica B: Condensed Matter 574, 411659, 2019
112019
Optical properties and stability of Bi doped La2O2S
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Optical Materials 95, 109260, 2019
102019
Comparative study of the luminescence of Bi doped LaOCl and LaOBr phosphor powders
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Journal of Luminescence 250, 119050, 2022
72022
Interaction mechanism for energy transfer from Ce to Tb ions in silica
HAAS Ahmed, WS Chae, OM Ntwaeaborwa, RE Kroon
Physica B: Condensed Matter 480, 100-104, 2016
62016
Luminescence properties of Bi doped LaOF phosphor powder
BM Jaffar, HC Swart, HAAS Ahmed, A Yousif, RE Kroon
Optical Materials 135, 113367, 2023
42023
Effect of background atmosphere and substrate temperature on SrO: Bi3+ (0.2 mol%) thin films produced using pulsed laser deposition with different lasers
MHM Abdelrehman, V Craciun, RE Kroon, A Yousif, HAAS Ahmed, ...
Physica B: Condensed Matter 581, 411757, 2020
42020
Luminescence of alternating SiO2: Tb and SiO2: Ce thin films produced by sol-gel spin coating
HAAS Ahmed, A Yousif, HC Swart, RE Kroon
Materials Today: Proceedings 2 (7), 4111-4117, 2015
42015
Effect of annealing on the Ce3+/Ce4+ ratio measured by XPS in luminescent SiO2:Ce
REK HAA Seed Ahmed, WD Roos, OM ntwaeborwa, HC Swart
South African Institute of Physics, 280 - 284, 2011
4*2011
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Articles 1–20