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基于PbS量子点光电探测器的脉搏检测系统研究

李力 耿会娟 张天昊 朱建平 ZHUJian-ping

李力, 耿会娟, 张天昊, 朱建平, ZHUJian-ping. 基于PbS量子点光电探测器的脉搏检测系统研究[J]. 中国光学(中英文). doi: 10.37188/CO.2024-0018
引用本文: 李力, 耿会娟, 张天昊, 朱建平, ZHUJian-ping. 基于PbS量子点光电探测器的脉搏检测系统研究[J]. 中国光学(中英文). doi: 10.37188/CO.2024-0018
LI Li, GENG Hui-juan, ZHANG Tian-hao, SU Yan-jie, . Research on pulse detection system based on PbS quantum dot photodetector[J]. Chinese Optics. doi: 10.37188/CO.2024-0018
Citation: LI Li, GENG Hui-juan, ZHANG Tian-hao, SU Yan-jie, . Research on pulse detection system based on PbS quantum dot photodetector[J]. Chinese Optics. doi: 10.37188/CO.2024-0018

基于PbS量子点光电探测器的脉搏检测系统研究

doi: 10.37188/CO.2024-0018
基金项目: 上海市自然科学基金(No. 19ZR1426900);上海交通大学深蓝计划(No. SL2020MS001);河南省科技攻关项目(No. 242102240050)
详细信息
    作者简介:

    李 力(1999—),男,江苏宿迁人,硕士研究生,研究方向为光电材料制备及光电信息探测。E-mail:17805286030@163.com

    耿会娟(1984—),女,河南安阳人,博士,副教授,主要从事半导体纳米材料与器件的研究。E-mail:ghjhou@aynu.edu.cn

    张天昊(2001—),男,辽宁沈阳人,硕士研究生,研究方向为光电材料制备及光电信息探测。E-mail:z_t_h2001@sjtu.edu.cn

    朱建平(1977—),女,上海人,通讯作者,博士,副教授,硕士研究生导师,主要从事无线传感器、检测技术研究工作。E-mail:jp-zhu@shou.edu.cn

  • 中图分类号: TP212.9

Research on pulse detection system based on PbS quantum dot photodetector

Funds: Supported by Shanghai Natural Science Foundation (No. 19ZR1426900); Shanghai Jiao Tong University Deep Blue Program (No. SL2020MS001); Henan Province science and technology research project (No. 242102240050)
More Information
  • 摘要:

    脉搏蕴含人体丰富的血流信息,检测脉搏并推导出人体心血管系统健康状态正成为研究的热点。本文利用热注射法合成得到尺寸为3 nm的PbS量子点,在金叉指电极表面通过旋涂的方法构筑PbS量子点光电探测器。基于已制备的PbS量子点光电探测器研制了数据可视化的脉搏检测系统。运用光电容积脉搏波描记法,我们对同一测试者不同运动状态以及不同测试者同一运动状态进行测量,经过电路处理将测得数据显示在电子显示屏上。结果表明,探测器在15.2 μW cm−2光强度照射下,其响应度(R)和探测率(D*)在−3 V偏压下分别为0.33 A/W和1.33×1012 Jones。将其用于测量脉搏电路中,系统能够有效接收并测得人体脉搏信号,表明基于PbS量子点光电探测器的脉搏检测系统在灵敏度、稳定性以及可靠性均满足应用要求。

     

  • 图 1  可视化脉搏检测系统前端电路原理图

    Figure 1.  Schematic diagram of the front-end circuit of the visual pulse detection system

    图 2  (a) 所制备材料的XRD数据图;(b) PbS量子点的TEM图,插图为PbS量子点的直径大小分布直方图;(c) PbS光电探测器的SEM图;(d) PbS光电探测器的SEM-EDS图;

    Figure 2.  (a) XRD data of PbS quantum dots, (b) TEM of PbS quantum dots, illustrated by the histogram of diameter distribution of PbS quantum dots, (c) SEM of PbS photodetectors, (d) SEM-EDS of PbS photodetector

    图 3  (a) PbS量子点光电探测器在不同光功率密度下的电流-电压(I-V)图;(b) −3 V偏压下PbS量子点光电探测器在不同光功率密度下的电流-时间(I-T)图;(c) PbS量子点光电探测器在9390 μW cm−2光强下的响应时间图;(d) PbS光电探测器件在不同光功率密度下的响应度曲线图和比探测率曲线图

    Figure 3.  (a) Current-voltage (I-V) diagram of PbS quantum dot photodetector at different optical power densities, (b) current-time (I-T) diagram of PbS quantum dot photodetector at different optical power densities at −3 V bias, (c) response time of PbS quantum dot photodetector at 9390 μW cm−2 light intensity, (d) responsivity curve and specific detection rate curve of PbS photodetector at different optical power densities

    图 4  (a) 基于PbS量子点光电探测器的可视化脉搏检测系统实物图;(b) 系统实测时电子显示屏显示图

    Figure 4.  (a) the physical image of the visual pulse detection system based on the PbS quantum dot photodetector, (b) the display diagram of the electronic display screen during the actual measurement of the system

    图 5  同一测试者的不同运动状态时的脉搏变化图

    Figure 5.  Pulse changes of the same test subject in different motor states

    图 6  (a) 不同测试者同一运动状态的脉搏变化图;(b) 同一测试者不同测试时间的脉搏变化图

    Figure 6.  (a) Pulse change plot of the same exercise state with different testers, (b) Pulse change plot of the same tester at different test times.

    图 7  同一测试者不同检测系统的电压示意图

    Figure 7.  Voltage diagram of different test systems for the same tester

    表  1  两种系统脉搏检测结果统计表(单位:次/分钟)

    Table  1.   Statistical table of pulse test results of the two systems (Unit: times/minute)

    名称第一次测试第二次测试第三次测试
    PbS量子点光电探测器637368
    gladstone647073
    下载: 导出CSV
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  • 收稿日期:  2024-01-17
  • 录用日期:  2024-04-26
  • 网络出版日期:  2024-05-14

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