基于聚（3,4-乙撑二氧硒吩）/氧化锌核壳纳米棒p-n异质结的紫外光电探测器

Ultraviolet Photodetector Based on Poly(3,4-Ethylenedioxyselenophene)/ZnO Core-Shell Nanorods p-n Heterojunction.

作者信息

Kadir Aygul, Jamal Ruxangul, Abdiryim Tursun, Liu Xiong, Zhang Hujun, Serkjan Nawrzhan, Zou Dongna, Liu Ya Jun

机构信息

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, Xinjiang, People's Republic of China.

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Petroleum and Gas Fine Chemicals, Ministry of Education, College of Chemical Engineering, Xinjiang University, Urumqi, 830017, Xinjiang, People's Republic of China.

出版信息

Nanoscale Res Lett. 2022 Jul 25;17(1):67. doi: 10.1186/s11671-022-03705-4.

DOI:10.1186/s11671-022-03705-4

PMID:35876971

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9314489/

Abstract

In this work, we successfully assembled an organic-inorganic core-shell hybrid p-n heterojunction ultraviolet photodetector by the electropolymerization deposition of poly(3,4-ethylenedioxyselenophene) (PEDOS) on the surface of zinc oxide nanoarrays (ZnO NRs). The structures of composite were confirmed by FTIR, UV-Vis, XRD and XPS. Mott-Schottky analysis was used to study the p-n heterojunction structure. The photodetection properties of ZnO NRs/PEDOS heterojunction ultraviolet photodetector were systematically investigated current-voltage (I-V) and current-time (I-t) analysis under different bias voltages. The results showed that PEDOS films uniformly grew on ZnO NRs surface and core-shell structure was formed. The p-n heterojunction structure was formed with strong built-in electric field between ZnO NRs and PEDOS. Under the irradiation of UV light, the device showed a good rectification behavior. The responsivity, detection rate and the external quantum efficiency of the ultraviolet photodetector reached to 247.7 A/W, 3.41 × 10 Jones and 84,000% at 2 V bias, respectively. The rise time (τ) and fall time (τ) of ZnO NRs/PEDOS UV photodetector were obviously shortened compared to ZnO UV photodetector. The results show that the introduction of PEDOS effectively improves the performance of the UV photodetector.

摘要

在本工作中，我们通过在氧化锌纳米阵列（ZnO NRs）表面电聚合沉积聚（3,4-亚乙基二氧噻吩）（PEDOS），成功组装了一种有机-无机核壳混合p-n异质结紫外光电探测器。通过傅里叶变换红外光谱（FTIR）、紫外-可见光谱（UV-Vis）、X射线衍射（XRD）和X射线光电子能谱（XPS）对复合材料的结构进行了确认。采用莫特-肖特基分析研究p-n异质结结构。通过在不同偏置电压下的电流-电压（I-V）和电流-时间（I-t）分析，系统研究了ZnO NRs/PEDOS异质结紫外光电探测器的光电探测性能。结果表明，PEDOS薄膜均匀生长在ZnO NRs表面，形成了核壳结构。ZnO NRs与PEDOS之间形成了具有强内建电场的p-n异质结结构。在紫外光照射下，该器件表现出良好的整流行为。在2 V偏置电压下，紫外光电探测器的响应度、探测率和外量子效率分别达到247.7 A/W、3.41×10 Jones和84,000%。与ZnO紫外光电探测器相比，ZnO NRs/PEDOS紫外光电探测器的上升时间（τ）和下降时间（τ）明显缩短。结果表明，PEDOS的引入有效提高了紫外光电探测器的性能。