摘要
通过空间限域法制备了不同厚度的MAPbI_(3)纳米片,并在纳米片两端蒸镀平行电极,制备成光电导型光电探测器。器件分析表明,随着MAPbI_(3)纳米片厚度的减小,器件的最大响应位置从可见光区域蓝移到紫外波段。这表明,基于超薄MAPbI_(3)纳米片的光电探测器可以实现紫外光选择性探测。器件在300 nm光照下的进一步分析表明,随着光强的增加,器件的光电流不断增加。在3 V偏压,0.0585 mW/cm^(2)光照强度下,器件的响应度最大为26.9 mA/W。
MAPbI_(3)nanosheets with different thicknesses were prepared by spatial confinement method,and parallel electrodes were evaporated at both ends of the nanosheets to prepare photoconductive photodetectors.Device analysis shows that with the decrease of the thickness of MAPbI_(3)nanosheets,the maximum response position of the device moves from the visible light region to the ultraviolet band.This shows that the photodetector based on ultra-thin MAPbI_(3)nano sheet can realize ultraviolet selective detection.Further analysis of the device under 300 nm light indicates that the photocurrent of the device increases with the increase of light intensity.Under 3 V bias voltage and 0.0585 mW/cm^(2)light intensity,the maximum response of the device is 26.9 mA/W.
作者
刘明明
LIU Mingming(Hefei University of Technology,Hefei 230009,China)
出处
《电子测试》
2023年第3期65-68,共4页
Electronic Test
基金
2020年国家自然科学基金面上项目(6207031306)资助
关键词
钙钛矿
纳米片
紫外光电探测器
perovskite
nanosheets
ultraviolet photodetectors
