Photonic band gap in (Pb,La)(Zr,Ti)O3 inverse opals
Photonic band gap in (Pb,La)(Zr,Ti)O3 inverse opals
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DOI：
10.1063/1.1578691
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发表时间：
2003-05
影响因子：
4
通讯作者：
Bo Li;Ji Zhou;L. Hao;Wei Hu;Ruilong L. Zong;Minmin Cai;M. Fu;Z. Gui;Long-tu Li;Qi Li
中科院分区：
文献类型：
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作者：
Bo Li;Ji Zhou;L. Hao;Wei Hu;Ruilong L. Zong;Minmin Cai;M. Fu;Z. Gui;Long-tu Li;Qi Li
通过自组装过程结合溶胶-凝胶技术合成了(Pb,La)(Zr,Ti)O3 (PLZT)反蛋白石光子晶体。在此过程中，PLZT前驱体渗透到由单分散亚微米聚苯乙烯球组装的蛋白石模板的间隙中，然后在潮湿环境中凝胶化。通过在 700 °C 的最终温度下煅烧样品去除聚苯乙烯模板，同时伴随 PLZT 反蛋白石网络中钙钛矿相的结晶。扫描电子显微镜图像显示反蛋白石具有面心立方结构，晶格常数为 250 nm。从样品的透射光谱中观察到可见光范围内的宽光子带隙。这种 PLZT 反蛋白石作为光子晶体在器件应用中应该具有重要意义。
(Pb,La)(Zr,Ti)O3 (PLZT) inverse opal photonic crystals were synthesized by a process of self-assembly in combination with a sol-gel technique. In this process, PLZT precursors were infiltrated into the interstices of the opal template assembled by monodisperse submicron polystyrene spheres, and then gelled in a humid environment. Polystyrene template was removed by calcining the specimen at a final temperature of 700 °C accompanied with the crystallization of perovskite phase in PLZT inverse opal network. Scanning electron microscope images show that the inverse opals possess a fcc structure with a lattice constant of 250 nm. A wide photonic band gap in the visible range is observed from transmission spectra of the sample. Such PLZT inverse opals as photonic crystals should be of importance in device applications.