Volume 19, Issue 4 (Journal of Iranian Ceramic Society 2024)                   Jicers 2024, 19(4): 62-72 | Back to browse issues page

‎ 20.1001.1.17353351.1402.19.0.14.7

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Faal Nazari N S, Rajabi M, zaker Moshfegh A. Experimental Study on the Piezophototronic Effect in Enhancing the Photodetection Properties of ZnO@BaTiO3 Core-Shell Structure. Jicers 2024; 19 (4) :62-72
URL: http://jicers.ir/article-1-518-en.html
Experimental Study on the Piezophototronic Effect in Enhancing the Photodetection Properties of ZnO@BaTiO3 Core-Shell Structure
Neda Sadat Faal Nazari , Marjan Rajabi * , Alireza Zaker Moshfegh
& Department of Advanced Materials and New Technologies, Iranian Research Organization for Science and Technology (IROST) , mrajabi@irost.ir
Abstract:   (543 Views)
In this study, the synthesis and characterization of a piezo-phototronic ultraviolet (UV) photodetector device based on the FTO/ZnO@BaTiO3/FTO structure is investigated. Initially, ZnO nanorods, as the core of the structure, are synthesized on an etched FTO substrate using a hydrothermal method. Subsequently, a shell of BaTiO3 nanoparticle is formed using a novel vapor thermal method (VTM), which combines a sol-gel and hydrothermal process simultaneously. The crystal structure and morphology of the prepared samples are evaluated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM), respectively. Based on the photodetection characterization results, the formation of a BaTiO3 shell on the ZnO nanorods resulted in a decrease in dark current from 7.7 to 3.7 µA, an increase in sensitivity from 13 to 24, and a decrease in response time from 120 to 20 s. Subsequently, by applying compressive forces with magnitudes of 1N and 4N, the responsivity of the core-shell ZnO@BaTiO3 samples increased from 22.4 to 39.6 and 47.9 mAW-1, respectively.  The obtained results indicate that the fabricated device exhibits improvement in piezophototronic properties.
 
Keywords: Photodetector, Zinc oxide nanorods, Barium titanate, Piezo-phototronics, Hydrothermal
Full-Text [PDF 1788 kb]   (116 Downloads)    
Type of Study: Research | Subject: Electrical, Optical and Magnetic Ceramics
Received: 2024/10/19 | Accepted: 2024/11/5
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