摘要
采用熔盐法,以五水硝酸铋为铋源、硒粉为硒源、水合肼作为还原剂,在不同NaOH浓度下(0~3 mol/L)合成了Bi_(2)O_(2)Se纳米片,并采用XRD,SEM,TEM以及XPS等对样品的形貌、结构和成分进行了表征。然后,以Bi_(2)O_(2)Se为工作电极制备了宽光谱自供能探测器,并探究了它们的光电探测性能。测试结果表明,在1.1 mol/L NaOH的条件下,Bi_(2)O_(2)Se自供能探测器的光电探测性能最优,在紫外-可见-红外波段具有较高的响应度。在365 nm紫外光照射下,光电流最高可以达到7.8μA,其上升和下降时间分别为30和21 ms。同时,通过计算得到其响应度和探测率分别为4.2×10^(-4)A/W和1.02×10^(-9)Jones。
Bi_(2)O_(2)Se nanosheets were synthesized by molten salt method by using Bismuth nitrate pentahydrate as bismuth source, selenium powder as selenium source and hydrazine hydrate as reducing agent at different concentrations of NaOH(0~3 mol/L). The morphology, structure and composition of the samples were characterized by XRD, SEM, TEM and XPS. Then, a wide spectrum self-powered detector was prepared by using Bi_(2)O_(2)Se as the working electrode, and their photoelectric detection performance was investigated. The test results show that the Bi_(2)O_(2)Se self-powered detector has the best photoelectric detection performance under the condition of 1.1 mol/L NaOH. In the UV-Vis-IR band, it has a high response. Under 365 nm UV light, the photocurrent can reach 7.8 μA, and the rise and fall time are 30 and 21 ms, respectively. The responsivity and detectivity are 4.2×10^(-4)A/W and 1.02×10^(-9)Jones, respectively.
作者
陈雨田
张翔宇
曾值
张冰珂
赵晨晨
任帅
容萍
高世勇
王东博
矫淑杰
王金忠
CHEN Yutian;ZHANG Xiangyu;ZENG Zhi;ZHANG Bingke;ZHAO Chenchen;REN Shuai;RONG Ping;GAO Shiyong;WANG Dongbo;JIAO Shujie;WANG Jinzhong(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,CHN)
出处
《半导体光电》
CAS
北大核心
2021年第6期854-858,863,共6页
Semiconductor Optoelectronics
基金
国家重点研发计划项目(2019Yfa0705201)。
