Relationship between microstructure and optical properties of a novel perovskite C₁₂PbI₄ embedded in matrix of porous alumina

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• 作者：W. Zaghdoudi ; ^{walid_inrst@yahoo.fr} ; A. Bardaoui ; N. Khalifa ; R. Chtourou
• 关键词：Porous anodic alumina (PAA) ; X-ray diffraction ; AFM and SEM microscopy ; Perovskite ; Optical property
• 刊名：Superlattices and Microstructures
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：53
• 期：Complete
• 页码：204-212
• 全文大小：1128 K

文摘

In this study, organic-inorganic hybrid perovskite multiple quantum wells (PbI QWs) embedded in porous anodic alumina (PAA) thin films on glass and aluminum substrates are investigated in detail. The pore height and diameter of the nanoscale structure of porous anodic alumina (PAA) film produced by the anodization technique are controllable. The synthesized films are characterized morphologically using the atomic force microscopy (AFM). Scanning electron microscopy (SEM) study showed granular surface. The structural and optical properties were investigated by X-ray diffraction (XRD), photoluminescence (PL) and UV-Vis-NIR spectrophotometer. The effect of the two different substrates on the impregnation of the PbI QW in the PAA is presented. Both PL and AFM studies show a better penetration of the PbI QW in the case of the Al substrate providing a wider pore diameter. Remarkable enhancement of quantum confinement is demonstrated.