摘要
本文采用水热法在ITO衬底上制备了ZnO纳米棒阵列,然后用化学水浴沉积法在纳米棒上制备CdS量子点。分别利用SEM和XRD对样品形貌和晶体结构进行表征。结果表明,球状的CdS量子点均匀地包覆在ZnO纳米棒表面,且结晶质量较好。基于ZnO纳米棒和ZnO纳米棒/CdS量子点制备的探测器对紫外光都具有很好的响应,然而与ZnO纳米棒探测器相比,ZnO纳米棒/CdS量子点探测器在相同条件下的光电流提高了7倍,为0.52 mA。此外,ZnO纳米棒/CdS量子点探测器对绿光和蓝光也表现出了很好的响应。
ZnO nanorods were prepared on ITO substrate using the hydrothermal method and then CdS quantum dots were synthesized on the ZnO nanorods with the chemical bath deposition method.The morphologies and crystalline structure of the as-prepared samples were characterized by SEM and XRD,respectively.The results indicated that after the chemical bath deposition,spherical CdS quantum dots were evenly coated on the surface of ZnO nanorods with good crystalline quality.The photodetectors made up of ZnO nanorods and ZnO nanorods/CdS quantum dots showed good response under ultraviolet(UV)irradiation.The photocurrent of ZnO nanorods/CdS quantum dots detector(0.52 mA)was 7 times higher than that of ZnO nanorods.In addition,the photodetector based on ZnO nanorods/CdS quantum dots exhibited good response to green and blue light.
作者
胡轶
胡更新
张洁静
桑丹丹
李易昆
高世勇
HU Yi;HU Geng-xin;ZHANG Jie-jing;SANG Dan-dan;LI Yi-kun;GAO Shi-yong(Department of Physical Chemistry,Taiyuan University,Taiyuan 030032,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;School of Physical Science and Information Technology,Shandong Key Laboratory of Optical Communication Science and Technology,Liaocheng University,Liaocheng 252000,China)
出处
《中国光学》
EI
CAS
CSCD
北大核心
2019年第6期1271-1278,共8页
Chinese Optics
基金
黑龙江省博士后基金资助项目(No.LBH-Q16104)
山东省自然科学基金资助项目(No.ZR2017QA013)~~
关键词
ZNO纳米棒
CDS量子点
异质结构
紫外探测
可见光探测
ZnO nanorods
CdS quantum dots
heterostructure
UV photodetection
visible light photodetection
