Loading...
Please wait, while we are loading the content...
Similar Documents
Light-emission in Tb 3+ and Eu 3+ : PVP polymer films
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sivaiah, K. Srinivasa Buddhudu |
| Copyright Year | 2011 |
| Abstract | Analysis of photoluminescence spectra of PVP and Tb or Eu: 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 Tb and Eu 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 TGADTA spectral profiles have been carried out. From the measured emission spectrum of the Tb: PVP polymer film, an intense green emission at 544 nm (D4→ F5) 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 Tb: PVP polymer film, and a bright red emission has been noticed from the surface of the Eu: PVP polymer film. The emission spectrum of Eu: PVP polymer film has also revealed an intense red emission at 612 nm (D0→ F2). |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://nopr.niscair.res.in/bitstream/123456789/11709/1/IJPAP%2049(6)%20377-381.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |