Loading...
Please wait, while we are loading the content...
Similar Documents
Near-infrared down-conversion and energy transfer mechanism in Yb(3+)-doped Ba2LaV3O11 phosphors.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhao, Jin Guo, Chongfeng Li, Ting Song, Dan Su, Xiangying |
| Copyright Year | 2015 |
| Abstract | Yb(3+)-doped Ba2LaV3O11 vanadate phosphors with near-infrared (NIR) emission are synthesized via the sol-gel method. The phase purity and structure of samples are characterized by X-ray diffraction (XRD). The electronic structure of the self-activated phosphor host Ba2LaV3O11 is estimated by density functional theory (DFT) calculation, and the host absorption is mainly ascribed to the charge transition from the O-2p to V-3d states. Photoluminescence emission (PL) and excitation (PLE) spectra, decay curves, absorption spectra and theoretical quantum yields of samples are also investigated. Results indicate that Ba2LaV3O11:Yb(3+) phosphors have strong broad band absorption and efficient NIR emission, which matches well with the spectral response of the Si-based solar cells. The energy transfer processes from [VO4](3-) to Yb(3+) and possible transfer models are proposed based on the concentration of Yb(3+) ions. Results demonstrate that Ba2LaV3O11:Yb(3+) phosphors might act as a promising NIR DC solar spectral converter to enhance the efficiency of the silicon solar cells by utilizing broad band absorption of the solar spectrum. |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c5cp04115e |
| PubMed reference number | 26388401 |
| Journal | Medline |
| Volume Number | 17 |
| Issue Number | 39 |
| Alternate Webpage(s) | http://or.nsfc.gov.cn/bitstream/00001903-5/176688/1/1000013800962.pdf |
| Alternate Webpage(s) | http://pubs.rsc.org/en/content/getauthorversionpdf/C5CP04115E |
| Alternate Webpage(s) | https://doi.org/10.1039/c5cp04115e |
| Journal | Physical chemistry chemical physics : PCCP |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |