Unravelling the energy transfer mechanism in bismuth co-activation of LaInO3:Sm3+/Ho3+ nanophosphor for color-tunable luminescence
| Autor: | Babajide Patrick Ajayi, T.K. Visweswara Rao, Ch. Satya Kamal, P. V. S. S. S. N. Reddy, Jacek B. Jasinski, K. Sujatha, K. Ramachandra Rao |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Photoluminescence business.industry General Chemical Engineering Analytical chemistry chemistry.chemical_element Phosphor 02 engineering and technology General Chemistry Crystal structure 021001 nanoscience & nanotechnology 01 natural sciences Photon upconversion law.invention Bismuth chemistry law 0103 physical sciences Optoelectronics 0210 nano-technology business Luminescence Excitation Light-emitting diode |
| Zdroj: | RSC Advances. 7:9724-9731 |
| ISSN: | 2046-2069 |
| Popis: | A series of single-phased and color tunable LaInO3:Bi3+,Ho3+/Sm3+ nano phosphors were synthesized via a cost effective and low temperature chemical route. The crystal structure, morphology, photoluminescence (PL) and energy transfer mechanism between Bi3+ to Ho3+/Sm3+ were investigated in detail. The considerable spectral overlap between the broad emission band of Bi3+ around 400–500 nm and the excitation band of Ho3+ and Sm3+ supports the efficient energy transfer from Bi3+ to Ho3+/Sm3+, which enhances the PL intensity remarkably. The energy transfer efficiency between Bi3+ and Ho3+/Sm3+ in LaInO3 was also calculated and the efficiency increased linearly with increasing concentration of Ho3+ and Sm3+. The emission hue can be tuned from blue to green and pink by varying the content of Ho3+/Sm3+. This investigation will extend an understanding of interactions between Bi3+ and rare earth ions in semiconducting host LaInO3 and show the potential applications of Bi3+, Ho3+/Sm3+ co-doped nanophosphors in displays and light emitting diodes. |
| Databáze: | OpenAIRE |
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