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dc.contributor.authorSivaiah, K-
dc.contributor.authorBuddhudu, S-
dc.identifier.issn0975-1041 (Online); 0019-5596 (Print)-
dc.description.abstractAnalysis of photoluminescence spectra of PVP and Tb3+ or Eu3+: PVP polymer films has been done. Emission spectrum of the host matrix poly (vinyl pyrrolidone) (PVP) has shown an intense blue emission at 424 nm [π0→ n1π2]. By using a solution cast method, more clear and transparent PVP polymer films have been developed for analysis with the addition of Tb3+ and Eu3+ ions separately into PVP polymer matrix; green and red colour emitting polymer films have been developed. Also undoped PVP polymer film has been prepared as a reference film for which XRD, FTIR, Raman and TGA-DTA spectral profiles have been carried out. From the measured emission spectrum of the Tb3+: PVP polymer film, an intense green emission at 544 nm (5D47F5) has been observed with an excitation at 311 nm. Under an UV source a bright green emission has been noticed from the surface of the Tb3+: PVP polymer film, and a bright red emission has been noticed from the surface of the Eu3+: PVP polymer film. The emission spectrum of Eu3+: PVP polymer film has also revealed an intense red emission at 612 nm (5D07F2).en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJPAP Vol.49(06) [June 2011]en_US
dc.subjectStructural-optical characterizationen_US
dc.subjectLuminescent polymersen_US
dc.subjectPolymer filmsen_US
dc.titleLight-emission in Tb3+ and Eu3+: PVP polymer filmsen_US
Appears in Collections:IJPAP Vol.49(06) [June 2011]

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