Piezophototronic Effect-Enhanced Highly Sensitive Flexible Photodetectors Based on Electrohydrodynamic Direct-writing Nanofiber Self-stacking

IF 21.3 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-05-20 DOI:10.1007/s42765-025-00554-5

Xianruo Du, Zhenghui Peng, Yanyang Liang, Chenqi Zheng, Yisheng Zhong, Ruixin Chen, Yinuo Wang, Ziheng Li, Chunyu Xu, Zungui Shao, Yifang Liu, Huatan Chen, Gaofeng Zheng

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引用次数: 0

Abstract

Flexible photodetectors are ideal for short-range communication in lightweight microintegrated systems. However, low-bonding interface and high-power cost of photosensitive components greatly limit their application in flexible communication systems. To address this, herein, piezophototronic effect-enhanced sensing components are proposed for flexible photodetectors. This approach leverages the piezophototronic effect to modulate nanoscale charge transport and the precision of electrohydrodynamic direct-writing to achieve controlled nanofiber assembly, thereby enhancing interfacial bonding and overall device performance. By employing electrohydrodynamic direct-writing, a copper-ammonia complex ((Cu(NH₃))(CN)) nanofiber is self-stacked on a zinc oxide (ZnO) nanofiber to construct a zinc oxide and copper ammine complex (ZnO@(Cu(NH₃))(CN)) photodetector with low static power consumption and high responsiveness through the combined effects of piezoelectricity and fiber self-stacking. The dark current is reduced to 1.12 × 10⁻⁷ A, and the static power consumption of the photodetector is also decreased. The responsiveness is up to 13.3 A/W, with response and recovery times of 11 and 9 ms under ultraviolet (UV) light illumination, respectively, fulfilling the requirements for highly sensitive photodetection owing to the high interface bonding. The detector's threshold voltage is tunable, ranging from 6 V for 5 stacking layers to 20 V for 25 stacking layers, thereby allowing the device's performance to be precisely tailored to specific application requirements. Leveraging the exceptional optoelectronic performance of the ZnO@(Cu(NH₃))(CN) photodetector, this study expands the application scenarios of flexible photodetectors and demonstrates their potential in the fields of 6G technology and battlefield communication.

Graphical Abstract

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基于电流体动力直写纳米纤维自堆叠的压电光电效应增强高灵敏度柔性光电探测器

柔性光电探测器是轻量级微集成系统中短距离通信的理想选择。然而，光敏元件的低键合接口和高功率成本极大地限制了其在柔性通信系统中的应用。为了解决这个问题，本文提出了用于柔性光电探测器的压电光电效应增强传感元件。该方法利用压电电子效应来调节纳米级电荷输运和电流体动力直接写入的精度，从而实现可控的纳米纤维组装，从而增强界面键合和整体器件性能。采用电流体动力直写的方法，将铜-氨配合物((Cu（NH3))(CN)）纳米纤维自堆叠在氧化锌（ZnO）纳米纤维上，利用压电和纤维自堆叠的共同作用，构建了具有低静态功耗和高响应性的氧化锌-铜胺配合物(ZnO@(Cu（NH3))(CN)）光电探测器。暗电流降低到1.12 × 10−7 A，光电探测器的静态功耗也降低了。响应速度高达13.3 A/W，在紫外光照射下的响应时间和恢复时间分别为11 ms和9 ms，由于高界面键合，满足了高灵敏度光探测的要求。探测器的阈值电压是可调的，范围从6 V（5层堆叠）到20 V（25层堆叠），从而使器件的性能能够精确地适应特定的应用要求。利用ZnO@(Cu(NH3))（CN）光电探测器卓越的光电性能，本研究拓展了柔性光电探测器的应用场景，展示了其在6G技术和战场通信领域的潜力。图形抽象

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.