Neda F. Nazari , Marjan Rajabi , Alireza Z. Moshfegh
{"title":"紫外线激活氧化钡(BaTiO3)装饰氧化锌纳米棒中的异质结,实现更快、更高效的光电探测器","authors":"Neda F. Nazari , Marjan Rajabi , Alireza Z. Moshfegh","doi":"10.1016/j.sna.2024.115877","DOIUrl":null,"url":null,"abstract":"<div><p>This study explores the improved ultraviolet (UV) photodetection performance of ZnO nanorods (ZnO NRs) decorated with BaTiO<sub>3</sub> nanoparticles (BT NPs) synthesized using a novel vapor-thermal method (VTM) leading to the formation of a heterojunction upon UV activation that enhances charge separation and reduces charge carrier’s recombination. Initially, ZnO NRs were prepared via a hydrothermal method followed by decoration with BT NPs using the innovative VTM process. To elucidate the morphology and composition of the BT-decorated ZnO NRs, a comprehensive characterization was performed using various techniques, including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Photoluminescence (PL) and diffuse reflectance spectroscopy (DRS) are employed to study electronic band structure of the BT decorated and undecorated samples. The BT nanoparticle-decorated ZnO NRs exhibited a higher photodetection performance compared to bare ZnO NRs under 365 nm UV light illumination. This improvement is manifested by a lower dark current, a faster rise time (from 2 s to 0.75 s), a shorter decay time (from 46 s to 0.96 s), and higher sensitivity (from 57 to 135). These findings demonstrate the promising potential of the BT nanoparticle-decorated ZnO NRs for application in high-performance UV photodetectors.</p></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"379 ","pages":"Article 115877"},"PeriodicalIF":4.1000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"UV-activated heterojunction in BaTiO3 decorated ZnO nanorods for faster and more efficient photodetector\",\"authors\":\"Neda F. Nazari , Marjan Rajabi , Alireza Z. Moshfegh\",\"doi\":\"10.1016/j.sna.2024.115877\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study explores the improved ultraviolet (UV) photodetection performance of ZnO nanorods (ZnO NRs) decorated with BaTiO<sub>3</sub> nanoparticles (BT NPs) synthesized using a novel vapor-thermal method (VTM) leading to the formation of a heterojunction upon UV activation that enhances charge separation and reduces charge carrier’s recombination. Initially, ZnO NRs were prepared via a hydrothermal method followed by decoration with BT NPs using the innovative VTM process. To elucidate the morphology and composition of the BT-decorated ZnO NRs, a comprehensive characterization was performed using various techniques, including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Photoluminescence (PL) and diffuse reflectance spectroscopy (DRS) are employed to study electronic band structure of the BT decorated and undecorated samples. The BT nanoparticle-decorated ZnO NRs exhibited a higher photodetection performance compared to bare ZnO NRs under 365 nm UV light illumination. This improvement is manifested by a lower dark current, a faster rise time (from 2 s to 0.75 s), a shorter decay time (from 46 s to 0.96 s), and higher sensitivity (from 57 to 135). These findings demonstrate the promising potential of the BT nanoparticle-decorated ZnO NRs for application in high-performance UV photodetectors.</p></div>\",\"PeriodicalId\":21689,\"journal\":{\"name\":\"Sensors and Actuators A-physical\",\"volume\":\"379 \",\"pages\":\"Article 115877\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sensors and Actuators A-physical\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0924424724008719\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators A-physical","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0924424724008719","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
UV-activated heterojunction in BaTiO3 decorated ZnO nanorods for faster and more efficient photodetector
This study explores the improved ultraviolet (UV) photodetection performance of ZnO nanorods (ZnO NRs) decorated with BaTiO3 nanoparticles (BT NPs) synthesized using a novel vapor-thermal method (VTM) leading to the formation of a heterojunction upon UV activation that enhances charge separation and reduces charge carrier’s recombination. Initially, ZnO NRs were prepared via a hydrothermal method followed by decoration with BT NPs using the innovative VTM process. To elucidate the morphology and composition of the BT-decorated ZnO NRs, a comprehensive characterization was performed using various techniques, including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Photoluminescence (PL) and diffuse reflectance spectroscopy (DRS) are employed to study electronic band structure of the BT decorated and undecorated samples. The BT nanoparticle-decorated ZnO NRs exhibited a higher photodetection performance compared to bare ZnO NRs under 365 nm UV light illumination. This improvement is manifested by a lower dark current, a faster rise time (from 2 s to 0.75 s), a shorter decay time (from 46 s to 0.96 s), and higher sensitivity (from 57 to 135). These findings demonstrate the promising potential of the BT nanoparticle-decorated ZnO NRs for application in high-performance UV photodetectors.
期刊介绍:
Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas:
• Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results.
• Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon.
• Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays.
• Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers.
Etc...