Synthesis and photoluminescence study of rare earth activated phosphor Na2La2B2O7

Gd(3+)-activated oxysulphide (M2O2S) may be used to study Photoluminescence (PL) properties with respect to phototherapy. Gd(3+)-activated phosphor materials are widely used for phototherapy lamps. The Gd(3+) ion gives characteristic Narrow-Band (NB) emissions, in particular in the ultraviolet (UV) light region, that are used to treat more than 50 types of skin diseases. In this paper, M2O2S oxysulphide doped with Gd(3+) was synthesized by the solid-state flux fusion method and its down conversion spectral properties were studied as a function of different Gd(3+) concentrations. The sample was characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and PL and the crystal structure was also studied. The lanthanum oxysulphide (La2O2S)-activated Gd(3+) ion showed a sharp emission peak at 314 nm when excited at 275 nm excitation, whereas the yttrium oxysulphide (Y2O2S)-activated Gd(3+) ion showed a sharp emission at 316 nm when excited by 272 nm. The effect of concentration of the Gd(3+) ion on the luminescence properties of M2O2S:Gd(3+) phosphor was also studied. These phosphor materials activated with the Gd(3+) ion may be suitable for phototherapy lamps, which are used to treat many types of skin diseases such as psoriasis, vitiligo, or scleroderma.

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“…. Some phosphor materials are reported as UV emitting, such as Na 2 La 2 B 2 O 7 , MgAl 2 O 4 , YAlO 3 , or Ca 5 (PO 4 ) 3 OH .…”

Section: Introductionmentioning

confidence: 99%

UVB‐emitting Gd³⁺‐activated M₂O₂S (where M = La, Y) for phototherapy lamp phosphors

2015

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“…During the past few years, a number of red and green emitting borate phosphors have been synthesized and studied extensively which can be used for fabricating WLEDs [7][8][9][10][11][12][13][14]. However, to the best of our knowledge, there is no report about the green SrB 2 O 4 :Tb 3+ phosphor for potential application on WLEDs.…”

Section: Introductionmentioning

confidence: 99%

Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Wang

Liu

et al. 2012

Materials Research Bulletin

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“…LaB 3 O 6 :Gd 3+ ,Pr 3+ is a commercial NB‐UVB emitting phosphor used in phototherapy lamps for the treatment of psoriasis . Eu 2+ ‐activated SrB 4 O 7 and Ba 2 B 5 O 9 Cl phosphors are used in the treatment of hyperbilirubinemia . Calcium phosphates are well known bioceramic materials used in medical applications because of their osteoconductivity.…”

Section: Rare Earth Elements Used For Phototherapy Lamp Phosphor Matementioning

confidence: 99%

Phosphor for phototherapy: Review on psoriasis

Hemne¹,

Kunghatkar

Dhoble

et al. 2017

Luminescence

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We review developments in the field of phototherapy in terms of the treatment wavelength, dosimetry and phosphor used for different dermatoses. We attempt to categorize skin lesions and diseases by morphology, focusing on conditions that can be treated using phototherapy and photochemotherapy. Recent research and review articles are studied, the treatments explained and information on phototherapy that is applicable to psoriasis and other diseases is tabulated. The clinical features, epidemiology, epitalogy and various types of psoriasis, together with the therapies available to treat them are reported. Needs-based research has been carried out on narrow and broad band UVB wavelength-emitting phosphors and psoralen combined with UVA (PUVA) depending upon the disease undergoing treatment. Somewhat detailed descriptions of the different types of therapies used in the treatment of psoriasis are given. Phototherapy is shown to be a good therapeutic option for various types of skin diseases. The use of natural therapy has diminished as more people move towards artificial phototherapy like narrow band UVB, broad band UVB, PUVA and targeted phototherapy. The main advantages of these treatments are that they are safe and reduce erythema following treatment. Regarding safety issue the targated phototherapy pay more attention towards researcher.

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Synthesis and photoluminescence study of rare earth activated phosphor Na2La2B2O7

Cited by 14 publications

References 17 publications

UVB‐emitting Gd³⁺‐activated M₂O₂S (where M = La, Y) for phototherapy lamp phosphors

UVB‐emitting Gd³⁺‐activated M₂O₂S (where M = La, Y) for phototherapy lamp phosphors

Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Phosphor for phototherapy: Review on psoriasis

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Synthesis and photoluminescence study of rare earth activated phosphor Na2La2B2O7

Cited by 14 publications

References 17 publications

UVB‐emitting Gd3+‐activated M2O2S (where M = La, Y) for phototherapy lamp phosphors

UVB‐emitting Gd3+‐activated M2O2S (where M = La, Y) for phototherapy lamp phosphors

Improved photoluminescence properties of a new green SrB2O4:Tb3+ phosphor by charge compensation

Phosphor for phototherapy: Review on psoriasis

Contact Info

Product

Resources

About

UVB‐emitting Gd³⁺‐activated M₂O₂S (where M = La, Y) for phototherapy lamp phosphors

UVB‐emitting Gd³⁺‐activated M₂O₂S (where M = La, Y) for phototherapy lamp phosphors