Photoluminescence characteristics of soft PZT 53/47 ceramic doped at A and/or B sites

作     者：M.D.DURRUTHY-RODRíGUEZ J.J.GERVACIO-ARCINIEGA M.HERNáNDEZ-GARCíA J.M.YánEZ-LIMóN 

作者机构：Universidad Nacional Evangélica Departamento de Física AplicadaInstituto de CibernéticaMatemáticay FísicaCITMA Catedrático CONACYT-Facultad de Ciencias Físico MatemáticasBenemérita Universidad Autónoma de Puebla CINVESTAV-Unidad Querétaro del IPNLibramiento Norponiente 2000Fracc.Real de Juriquilla 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2018年第7卷第2期

页      面：109-116页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by project PNCB 10/09 Cuba the Sabbatical program and projects CB 240460 and(LIDTRA)LN2015-254119 of CONACYT Mexico 

主　　题：photoluminescence PZT ceramics band structure X-ray diffraction(XRD) 

摘      要：This study presents the photoluminescence characteristics of the PZT 53/47 system doped at A and/or B sites, with Nb(PZTN), La(PLZT), and Nb–La(PLZTN) in the concentration range from 0.2 to 1.0 molar fraction. The intensity of the emission bands of the system PZTN is two orders higher than the intensity of the emission bands of the systems PLZT and PLZTN, and these emission bands are located at 1.73 eV(718 nm), 2.56 eV(485 nm), and 2.93 eV(424 nm). The origin of the luminescence in these systems is associated with lead and oxygen vacancies produced during the sintering process. The results from X-ray diffraction(XRD) show a mixture of rhombohedral and tetragonal phases. The system PZTN shows a higher tetragonal phase concentration, while PLZT and PLZTN systems show a higher rhombohedral phase concentration. The cell volume shows an increase with dopant concentration only in the case of the PLZTN system. The band gap energy shows a small variation in the PZTN and PLZTN cases around 3.0 eV, a close value to the band gap energy of the pure PZT 53/47 sample. The system PLZT shows an increasing behavior until 4.41 eV for the higher dopant concentration.