微波辅助构筑SnO_(2)/rGO复合材料及其UV光的敏感特性  

SnO_(2)/rGO Composites Constructed by Microwave Assisted Method and Their UV Photo Sensitive Properties

作　　者：崔乐 王博林[1] 李春 南宁 于灵敏[3] CUI Le;WANG Bolin;LI Chun;NAN Ning;YU Lingmin(College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China;Research Centre of Grapheme Technology and Application,Shangluo University,Shangluo,72600,China;School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]商洛学院化学工程与现代材料学院,商洛726000 [2]商洛学院商洛市石墨烯技术与应用研究中心,商洛726000 [3]西安工业大学材料与化工学院,西安710021

出　　处：《西安工业大学学报》2025年第1期27-34,共8页Journal of Xi’an Technological University

基　　金：陕西省重点研发计划项目(2024GX-YBXM-321);商洛学院博士启动基金项目(22SKY108);商洛学院科研计划资助项目(22KYZ103,20FK004);国家级大学生创新创业训练计划项目(S202211396018)。

摘　　要：由于光生电子-空穴对的快速复合,使得纯SnO_(2)对UV光的敏感性较弱。本文采用微波辅助法成功制备了SnO_(2)/rGO复合材料,并采用悬涂工艺将SnO_(2)/rGO浆料涂覆到叉指电极上,制成厚膜型光敏传感器器件,通过SEM、XRD和Raman分析了样品的形貌、物相及缺陷类型,并研究其对紫外(UV)光的敏感特性。结果表明:rGO较为均匀地分布在SnO_(2)颗粒之间,有效抑制了SnO_(2)纳米颗粒的团聚,同时SnO_(2)/rGO复合材料中的空位缺陷增多。随着工作温度的升高或UV光强度的降低,其响应值均减小。较纯SnO_(2),SnO_(2)/rGO复合纳米材料对UV光的响应值提高了153.39%,响应时间由51 s缩短至28 s。SnO_(2)/rGO复合材料对UV光响应的增强是基于样品中空位缺陷浓度的增大以及rGO对SnO_(2)能级的改变和提供的载流子传输通道。Pure SnO_(2)is less sensitive to UV light because of the rapid recombination of photo generated electron hole pairs.In this study,SnO_(2)/rGO composites were successfully prepared by the microwave assisted method,and then the SnO_(2)/rGO photo sensitive paste was coated on the interdigital electrode by the spin coating technology to make thick film photo sensors.Their morphologies,phases and the types of defects were analyzed by SEM,XRD and Raman,and their photo sensing properties to UV light were studied.The results show that the even distribution of rGO among SnO_(2)nanoparticles suppresses their agglomeration effectively and also the vacancy defects in SnO_(2)/rGO composites increase.With the increase of working temperature or the decrease of UV photo power,the response values are all reduced.Compared with pure SnO_(2),the response value of SnO_(2)/rGO composites to UV light increases by 153.39%,and the response time is shortened from 51 s to 28 s.The response of SnO_(2)/rGO composites to UV light are enhanced due to the increase of the vacancy defect concentration,the change of SnO_(2)energy level and the carrier transmission channel provided by rGO.

关 键 词：SnO_(2)/rGO复合材料 微波辅助法 光敏性能 UV光 响应值 

分 类 号：TB3[一般工业技术—材料科学与工程]