Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5363019 | Applied Surface Science | 2010 | 4 Pages |
Abstract
Phosphorus-doped nanosized TiO2 powders were prepared by a sol-gel technology. The optical absorption studies revealed that the spectral responses of phosphorus-doped (P-doped) TiO2 powders shift to the visible light region. The optimum phosphorus (P) content in our experiments is 16.7% (mol), and the corresponding absorption edge shifts to 450Â nm. Furthermore, our ab initio calculations support the conclusion that the doping of phosphorus can reduce the band gap by mixing the P 3p states with O 2p states. The theoretical lattice parameters and optimum phosphorus content are in agreement with the experimental results.
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Authors
Ling Xu, Chao-Qun Tang, Jun Qian, Zong-Bin Huang,