Contribution of structural order–disorder to the room-temperature photoluminescence of lead zirconate titanate powders
- 作者：Marcos Anicete-Santos ; Margarete S. Silva ; Emmanuelle Orhan ; Marcio S. Gó ; es ; Maria A. Zaghete ; Carlos O. Paiva-Santos ; Paulo S. Pizani ; Mario Cilense ; José ; A. Varela ; Elson Longo
- 关键词：Electronic structure ; Photoluminescence ; PZT
- 刊名：Journal of Luminescence
- 出版年：2007
- 期刊代码：54_00222313
- 类别：ch
- 出版时间：December 2007
- 卷：127
- 期：2
- 页码：689-695
- 文件大小：716 K
摘要
Intense and broad visible photoluminescent (PL) band was observed at room temperature in structurally disordered oration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4NH7F62-2&_mathId=mml35&_user=10&_cdi=5311&_rdoc=61&_acct=C000050221&_version=1&_userid=10&md5=34e7c73489e551b0ff8d1d0193c75114" title="Click to view the MathML source">PbZr0.53Ti0.47O3 powders. The lead zirconate titanate oration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4NH7F62-2&_mathId=mml36&_user=10&_cdi=5311&_rdoc=61&_acct=C000050221&_version=1&_userid=10&md5=306f969e8d21107a1c64ffba5a1e4a69" title="Click to view the MathML source">PbZr0.53Ti0.47O3 powders prepared by the polymeric precursor method and heat treated at different temperatures were structurally characterized at long range by means of X-ray diffraction. The PL was measured at room temperature samples heat treated at different temperatures. Experimental measurements and quantum-mechanical calculations showed that the high structural order and the high structural disorder in oration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJH-4NH7F62-2&_mathId=mml37&_user=10&_cdi=5311&_rdoc=61&_acct=C000050221&_version=1&_userid=10&md5=2f6069a507318c6f63a7699a042fc06c" title="Click to view the MathML source">PbZr0.53Ti0.47O3 lattice are not favorable to the intense PL emission. Only samples containing simultaneous structural order and disorder in their lattice present the intense visible PL emission at room temperature.