导电聚苯胺线膜修饰ZnO纳米棒阵列的可控制备及其紫外探测性能

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (1): 88-93.

导电聚苯胺线膜修饰ZnO纳米棒阵列的可控制备及其紫外探测性能

王建超^1,2,3, 杨光慧¹, 唐格格¹, 麻明友⁴, 彭华勇^2,4

1.吉首大学药学院,吉首 416000;
2.锰锌钒产业技术湖南省2011协同创新中心,吉首 416000;
3.吉首大学,武陵山地区民族药解析与创制湖南省工程实验室,吉首 416000;
4.吉首大学,实验室与设备管理中心,吉首 416000

收稿日期:2020-11-08 出版日期:2021-01-15 发布日期:2021-03-01
通讯作者: 彭华勇,工程师。E-mail:penghuayong13@163.com
作者简介:王建超(1994—),女,河北省人,讲师。E-mail:273169828@qq.com
基金资助:
湖南省教育厅科学研究项目(20C1543);吉首大学校级科研项目(Jd19004,Jdx19012);2018年湖南省锰锌钒产业技术协同创新中心本科生科研创新项目

Controllable Preparation and UV Detection Performance of ZnO Nanorod Arrays Modified by Conducting Polyaniline Film

WANG Jianchao^1,2,3, YANG Guanghui¹, TANG Gege¹, MA Mingyou⁴, PENG Huayong^2,4

1. School of Pharmaceutical Sciences, Jishou University, Jishou 416000, China;
2. The Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology, Jishou 416000, China;
3. Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, China;
4. Laboratory and Equipment Administration Center, Jishou University, Jishou 416000, China

Received:2020-11-08 Online:2021-01-15 Published:2021-03-01

摘要/Abstract

摘要： 基于p-n结的光生伏特效应可构筑性能优异的UV探测器,本文采用水热法可控制备竖直排列的氧化锌纳米棒阵列(n型ZnO-NRs),利用原位聚合法在ZnO-NRs表面上修饰p型聚苯胺线膜(PANI-NWs),再组装成ZnO-NRs与ZnO-NRs/PANI-NWs紫外探测器。通过扫描电镜(SEM)、X射线衍射仪(XRD)、紫外可见漫反射(UV-Vis)光谱表征样品的形貌、结构与光学性质。并通过电化学工作站测定电流-时间(I-t)和电流电压(I-V)曲线,表征其光响应性能。结果表明,制备的ZnO-NRs/PANI-NWs材料阵列排列整齐,界面接触良好,孔隙均匀。ZnO-NRs/PANI-NWs探测器在检测365 nm紫外光时,光电流为2.73×10^-4 A;检测254 nm紫外光时,光电流为1.44×10^-4 A。其光电流为ZnO-NRs探测器的4~10倍,ZnO-NRs和PANI-NWs之间形成的p-n结增强了光电导。用ZnO-NRs/PANI-NWs材料组装成的UV探测器体现出稳定性好,响应速度快,恢复时间短,电流增益高等优点,为开发高性能紫外光电探测器提供数据支撑。

关键词: 导电聚苯胺, ZnO纳米棒阵列, 水热法, p-n结, 光生伏特效应, 紫外探测性能

Abstract: Based on the photovoltage effect of p-n junction, UV detectors with excellent performance can be constructed. In this paper, vertically aligned ZnO nanorod arrays (n-type) ZnO-NRs were controllable prepared by hydrothermal method. The p-type polyaniline (PANI-NWs) was modified on the surface of ZnO-NRs by in-situ polymerization, and then assembled into ZnO-NRs and ZnO-NRs/PANI-NWs UV detectors. The morphology, structure and optical properties of the samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-Vis diffuse reflection spectroscopy. The current time (I-t) and current voltage (I-V) curves were measured by electrochemical workstation to characterize the light response properties. The results show that the ZnO-NRs/PANI-NW smaterials are arranged orderly, the interface contact is good, and the pores are uniform. When the ZnO-NRs/PANI-NWs detector detects 365 nm ultraviolet light, the photocurrent can reach 2.73×10^-4 A; at 254 nm, the photocurrent can reach 1.44 × 10^-4A, and its peak value is 4 to 10 times that of ZnO-NRs detector. The increase of photoconductivity is closely related to the p-n junction formed between ZnO-NRs and PANI-NWs. The UV detector assembled with ZnO-NRs/PANI-NWs material shows good stability, fast corresponding speed, short recovery time and high current gain, which provides data support for the development of high performance.

Key words: conducting polyaniline, ZnO nanorod array, hydrothermal method, p-n junction, photovoltaic effect, UV detection performance

中图分类号:

TN36

王建超, 杨光慧, 唐格格, 麻明友, 彭华勇. 导电聚苯胺线膜修饰ZnO纳米棒阵列的可控制备及其紫外探测性能[J]. 人工晶体学报, 2021, 50(1): 88-93.

WANG Jianchao, YANG Guanghui, TANG Gege, MA Mingyou, PENG Huayong. Controllable Preparation and UV Detection Performance of ZnO Nanorod Arrays Modified by Conducting Polyaniline Film[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(1): 88-93.

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