An adjustable multi-color detector based on regulating TiO_(2)surface adsorption and multi-junction synergy

作     者：Tao Ji Shuqing He Fujin Ai Jianghong Wu Li Yan Junqing Hu Meiyong Liao Tao Ji;Shuqing He;Fujin Ai;Jianghong Wu;Li Yan;Junqing Hu;Meiyong Liao

作者机构：College of Health Science and Environmental EngineeringShenzhen Technology UniversityShenzhen 518118China Research Center for Functional MaterialsNational Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan Shenzhen Bay LaboratoryShenzhen 518132China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2021年第14卷第10期

页      面：3423-3430页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(No.51972055) the Shenzhen Science and Technology Research Project(No.JCYJ20180508152903208) the Guangdong Basic and Applied Basic Research Foundation(No.2020A1515010258) the Stable Support Project for Shenzhen High Education Institutions(No.SZWD2021001) the Shenzhen Bay Laboratory Open Program(No.SZBL2020090501002) the Natural Science Foundation of Top Talent of SZTU(No.20200201) the Homemade Experimental Equipment Foundation of SZTU(No.2020XZY002) the Shenzhen Pengcheng Scholar Program 

主　　题：multi-color detector surface adsorption band adjustment optoelectronic 

摘      要：A TiO_(2)-based multi-color photodetector with controlled photoelectric response to ultraviolet(UV)and visible light is developed by using band regulation technologies such as multi-junction synergy and surface *** photodetector is manufactured via a continuous process including magnetron sputtering,hydrothermal growth,hydrogen annealing,spin coating and thermal evaporation assembly to form a structure of N-doped TiO_(2)/hydrogenated-TiO_(2)/p-Si *** synergistic effects form electronic potential wells in the device to control the electrical transport and spectral response of photo-generated *** the air,the device exhibits a controllable photodetection ability that responds to visible light at positive voltages and UV light at negative *** in vacuum(0.1 Pa),the photodetection ability of the device at negative voltages is greatly reduced due to the lack of barrier effect caused by surface *** the contrary,the photodetection ability at positive voltage(e.g.,4 V)has been greatly improved,and the quantum efficiency reaches 206.6%under the 480 nm wavelength *** device has a controllable ability to detect UV and visible light depending on the environments,which is very useful in the fields of environmental detection,chemical sensing and multi-color communication,etc.