摘要
通过热聚法以三聚氰胺为原料制备g-C_(3)N_(4)纳米片,然后采用化学水浴法生长CdS纳米颗粒,进而成功构筑g-C_(3)N_(4)/CdS异质结构。采用扫描电子显微镜,X射线衍射仪和X射线光电子能谱仪对样品的微观形貌、晶体结构和化学成分进行表征。结果表明,CdS纳米颗粒为六方纤锌矿结构,且均匀致密地附着在g-C_(3)N_(4)纳米片表面;g-C_(3)N_(4)/CdS探测器能够在零偏压工作条件下对紫外光有较好的光响应,且光电流值较g-C_(3)N_(4)纳米片探测器提高了约8倍。此外,g-C_(3)N_(4)/CdS探测器在可见光区也表现出良好的光响应,对蓝光和绿光多个周期探测的结果也表明其具有稳定性和循环性。
The g-C_(3)N_(4)nanosheets are prepared by thermal polymerization method using melamine as the raw material.Then CdS nanoparticles are grew by the chemical bath deposition,which in turn construct the g-C_(3)N_(4)/CdS heterostructures successfully.The scanning electron microscope,X-ray diffractometer and Xray photoelectron spectroscopy are applied to characterize the morphology,crystal structure and chemical composition of samples.It is shown that the CdS nanoparticles with hexagonal wurtzite structure are uniformly attached to the surface of g-C_(3)N_(4)nanosheets.The g-C_(3)N_(4)/CdS photodetector has a better photoresponse to ultraviolet light at zero bias voltage,and its photocurrent value is about 8 times higher than that of the g-C_(3)N_(4)nanosheet photodetector.Moreover,the g-C_(3)N_(4)/CdS photodetector also displays well light response in the visible light region,and shows stability and cyclicity of detection to blue and green light.
作者
支鹏伟
容萍
任帅
刘祥伟
高世勇
ZHI Pengwei;RONG Ping;REN Shuai;LIU Xiangwei;GAO Shiyong(Department of Materials and Chemical Engineering,Taiyuan University,Taiyuan 030032,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2021年第9期244-251,共8页
Acta Photonica Sinica
基金
国家重点研发计划项目(No.2019YFA0705201)
黑龙江省自然科学基金(No.LH2020E033)。
