Studies on the luminescent properties of europium doped alkaline Earth haloborates

Pu, Zhengcai; Su, Mianzhen; Ruan, Shen-Kang

doi:10.1016/0025-5408(95)00107-7

Cited by 7 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several groups prepared powder samples of Ba 2 B 5 O 9 Cl:Eu at high temperatures in a reducing atmosphere (N 2 /H 2 ) and the luminescent properties in these compounds were studied. [5][6][7] However, thin films of this material have not been reported, and cathodoluminescence ͑CL͒ properties at the excitation of low voltages have not been studied to determine their usefulness in field emission display devices. In this letter, we report the use of spray pyrolysis to deposit thin films of Ba 2 B 5 O 9 Cl:Eu.…”

mentioning

confidence: 99%

Blue cathodoluminescence from Ba2B5O9Cl:Eu phosphor thin films on glass substrates

Hao

Cocivera

2002

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

Blue cathodoluminescence from Ba2B5O9Cl:Eu phosphor thin films on glass substrates

Hao

Cocivera

2002

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…Similar studies with UV irradiation were performed on Sr 2 B 5 O 9 Br:Eu 2+ to understand the mechanism. [ 170 ] The effect of X‐ray irradiation on Eu 2+ emission spectra was studied and explained by Pu et al [ 171 ] As a result of radiation effects studies, Sr 2 B 5 O 9 Br:Eu 2+ has been proposed as a promising storage phosphor for X‐ray imaging [ 172 ] and thermal neutron imaging plates (NIP). [ 173 ] Following these results, the Sr 2 B 5 O 9 Br:Ce 3+ system was investigated.…”

Section: Mixed Anion Boratesmentioning

confidence: 99%

“…Similar studies with UV irradiation were performed on Sr 2 B 5 O 9 Br:Eu 2+ to understand the mechanism. [170] The effect of X-ray irradiation on Eu 2+ emission spectra was studied and explained by Pu et al [171] As a result of radiation effects studies, Sr 2 B 5 O 9 Br:…”

Section: Haloboratementioning

confidence: 99%

Luminescent inorganic mixed borate phosphors materials for lighting

Tawalare¹

2022

Luminescence

View full text Add to dashboard Cite

The need of new materials with desirable optical properties has become important in recent years. In particular, a need has emerged for compounds having better luminescence properties in various practical applications. The introduction of rare earth ions as activators improves the luminescence properties of the compounds considerably. Boron is one of the most abundant elements in nature. It readily combines with almost all other elements. In combination with oxygen; it forms borates comprised of various anions such as BO33−, B2O54−, etc. Apart from these simple borates, several complex compositions exist involving mixed anions as well as double metal borates, due to the three‐fold, or four‐fold coordination of borate atoms. Borates intrinsically possesses characteristics that are advantageous for optical materials, which include a wide transparency range, large electronic band gap, good thermal and chemical stability, low preparative temperature, optical stability with good nonlinear characteristics, and an exceptionally high optical damage threshold. The unique crystal structure of borates determines their enhanced ultraviolet light transparency, good nonlinearity, and relatively high resistance against laser‐induced damage. Some of these complex borates have interesting luminescence properties that are covered in this review. These include double borates containing rare earths RM3(BO3)4, pentaborates LaMgB5O10, M3R2(BO3)4, where M is an alkaline earth, mixed anion borates such as aluminoborate SrAl2B2O7, silicate‐borates such as pekovite, SrB2Si2O8, haloborates, M2B5O9X, where M is an alkaline earth and X is a halogen, phosphate borates, and MBPO5, where M is an alkaline earth. Phosphors based on these compositions find use in various applications such as fluorescence lamps, colour TVs, plasma display panels, high‐intensity discharge lamps based on xenon, optically pumped solid‐state lasers, eye‐safe lasers, and X‐ray imaging.

show abstract

“…Our data are also similar to those reported for powder samples of M 2 B 5 O 9 Cl:Eu by other groups. [15][16][17] It should be noted that all previously reported samples were prepared at high temperatures in a reducing atmosphere (N 2 /H 2 ) for the reduction of the Eu 3ϩ to Eu 2ϩ . Thus, it is noteworthy that our films of M 2 B 5 O 9 Cl:Eu had blue emission when the films were annealed in air at temperatures suitable for the use of glass substrates.…”

mentioning

confidence: 99%

“…In the case of M 2 B 5 O 9 Cl:Eu, boron atoms coordinate with three or four oxygen atoms to form BO 3 and BO 4 infrastructures, and these infrastructures comprise the (B 5 O 9 ) network. 16 As a result, a negative M 2ϩ vacancy was formed when three M 2ϩ ions were replaced by only two Eu 3ϩ ions. For this reason, the abnormal reduction was attributed to thermal stimulation of electron transfer from this defect to Eu 3ϩ .…”

mentioning

confidence: 99%

Tuning of the blue emission from europium-doped alkaline earth chloroborate thin films activated in air

Hao

Gao

Cocivera

2003

Applied Physics Letters

View full text Add to dashboard Cite

Thin films of M 2 B 5 O 9 Cl:Eu (MϭCa, Sr, Ba͒ were prepared on glass substrates using spray pyrolysis. Blue cathodoluminescence due to the abnormal reduction of Eu 3ϩ →Eu 2ϩ was obtained by annealing films in air. The cation of the host lattice was found to affect the effectiveness of the reduction process, which could result in influencing the emission band. By selecting types and composition of alkaline cation, it was possible to tune the dominant emitting wavelength between 435 to 465 nm. Activation of the films occurred at temperatures suitable for the use of glass substrates.

show abstract

Studies on the luminescent properties of europium doped alkaline Earth haloborates

Cited by 7 publications

References 6 publications

Blue cathodoluminescence from Ba2B5O9Cl:Eu phosphor thin films on glass substrates

Blue cathodoluminescence from Ba2B5O9Cl:Eu phosphor thin films on glass substrates

Luminescent inorganic mixed borate phosphors materials for lighting

Tuning of the blue emission from europium-doped alkaline earth chloroborate thin films activated in air

Contact Info

Product

Resources

About