Effect of Sr substitution on photoluminescent properties of BaAl2O4:Eu2+, Dy3+

Ryu, Ho Jin; Singh, Binod Kumar; Bartwal, K.S.

doi:10.1016/j.physb.2007.08.088

Cited by 46 publications

(22 citation statements)

References 15 publications

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“…Several gases such as N 2 /H 2 , H 2 , carbon, CO and NH 3 [1] are commonly used as reducing agents. In general, the Eu reduction can occur easily using a reducing atmosphere [13,14], but there are also cases where there is no need, for example when the Eu reduction occurs without the use of a reducing agent [15][16].…”

Section: Introductionmentioning

confidence: 99%

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Study of Eu3+→Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres

Rezende¹,

Valério²,

Jackson³

2015

Materials Research Bulletin

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Section: Introductionmentioning

confidence: 99%

“…In most of the reported work [5,13,14], BaAl 2 O 4 :Eu 2+ phosphors have been prepared using H 2 (g) with reduction agents. Therefore, it is also important to investigate and clarify the effects of the H 2 (g) and other gases that could be used as reducing agent.…”

Section: Introductionmentioning

confidence: 99%

Study of Eu3+→Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres

Rezende¹,

Valério²,

Jackson³

2015

Materials Research Bulletin

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“…Many research groups have reported the synthesis of high-quality single-walled and multi-walled CNTs [17][18][19]. To synthesize high-quality CNTs, several catalyst formulations such as Mo/MgO [20,21], CaCO 3 [22], Ni-Mo/MgO [23], substituted ferrocene [24] and Co-Ni/MgO [25] have been suggested. It has been reported that the nature of catalyst [26] as well as variation in the process condition of CVD such as flow rate of the reacting gas [27] or reaction temperature [28] affect the morphology of CNTs.…”

Section: Introductionmentioning

confidence: 99%

Monitoring structural defects and crystallinity of carbon nanotubes in thin films

et al. 2010

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We report the influence of catalyst formulation and reaction temperature on the formation of carbon nanotube (CNT) thin films by the chemical vapour deposition (CVD) method. Thin films of CNTs were grown on Fe-Mo/Al 2 O 3 -coated silicon wafer by thermal decomposition of methane at different temperatures ranging from 800 to 1000 • C. The electron microscopic investigations, SEM as well as HRTEM, of the as-grown CNT thin films revealed the growth of uniform multi-walled CNTs in abundance. The intensity ratio of D-band to G-band and FWHM of G-band through Raman measurements clearly indicated the dependency of structural defects and crystallinity of CNTs in thin films on the catalyst formulation and CVD growth temperature. The results suggest that thin films of multi-walled CNTs with negligible amount of defects in the nanotube structure and very high crystallinity can be obtained by thermal CVD process at 925 • C.

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“…It has been reported that the trivalent Eu 3+ ions show red luminescence properties in highly stable lead based heavy metal oxide glasses [6,7]. The solid-state reaction process is quite simple and successfully used for the synthesis of polycrystalline phosphor materials [8,9]. Chemical synthesis techniques, such as co-precipitation, sol-gel, microwave, Pechini and combustion synthesis methods have also been reported to prepare rare earth ions activated alkaline earth aluminate phosphors [10,11].…”

Section: Introductionmentioning

confidence: 99%