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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrosteric colloidal stabilization for obtaining SrTiO3/TiO2 heterojunction: Microstructural evolution in the interface and photonics properties

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Amoresi, Rafael A. C. [1] ; Teodoro, Vinicius [2] ; Teixeira, Guilhermina F. [1] ; Li, Maximo S. [3] ; Simoes, Alexandre Z. [4] ; Perazolli, Leinig A. [1] ; Longo, Elson [1, 2] ; Zaghete, Maria A. [1]
Total Authors: 8
[1] Sao Paulo State Univ UNESP, LIEC Chem Inst, Interdisciplinary Lab Electrochem & Ceram, BR-14800060 Araraquara, SP - Brazil
[2] Univ Fed Sao Carlos UFSCAR, LIEC Dept Chem, Interdisciplinary Lab Electrochem & Ceram, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Inst Phys Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[4] Sao Paulo State Univ UNESP, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of the European Ceramic Society; v. 38, n. 4, p. 1621-1631, APR 2018.
Web of Science Citations: 3

Researches on solids heterojunctions has proven to be an important field for technological applications due to synergism achieved by interface phenomena. In this work, we present an understanding of SrTiO3/TiO2 interface and its effects on structural and microstructural characteristics, and relate them to photoluminescence properties of heterojunctions obtained by a simple method. It was observed that SrTiO3 proportion directly influences the structural order-disorder, as observed by X-Ray diffraction, Raman spectroscopy and Transmission electron microscopy. Photoluminescence behavior of heterojunction with 1% of SrTiO3 showed a shift to blue emission region compared to TiO2, and enhanced of emission intensity compared to SrTiO3, resulted from defects generated by interface effects, attracting possible applications on selective color emitter. Therefore, we conclude that in same materials phases, nature and concentration of structural defects has strong dependence of SrTiO3 concentration, which leads to different photoluminescence properties. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC