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Highly flexible self-powered photodetectors based on core–shell Sb/CdS nanowires
摘要： Flexible photodetectors have great applications in flexible image sensors, wearable electronics and smart robots. In this work, we reported the fabrication of highly flexible self-powered photodetectors with core-shell Sb/CdS nanowires as the sensing materials. The fabricated device exhibited high Ion/Ioff ratio of 3.54×103 under zero bias, fast speed of photoresponse and great stability. An open-circuit voltage of 0.35 V was generated due to the presence of CdS and CdSb interfaces within the core-shell nanowires. Besides, the photocurrent of the flexible device is nearly invariable at various bending angles and even after thousands of bending cycles, demonstrating the excellent flexibility and bending stability. The results indicated that the self-powered photodetectors are promising candidates for future passive optoelectronic devices.
关键词： core-shell Sb/CdS nanowires,optoelectronic devices,self-powered,flexible photodetectors
更新于2025-11-21 11:03:13
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Bio-inspired transparent MXene electrodes for flexible UV photodetectors
摘要： As a sort of rising two dimensional materials, MXenes have huge potential for they not only possess superb electrical conductivity and high hydrophilicity, but also enjoy mechanical strength and flexibility. Yet their applications to optoelectronics as electrodes are limited owing to the tradeoff between high transmittance and low conductive resistance, as a low resistance needs more conductive materials, reducing transmission by producing a larger surface coverage. To tackle this bottleneck, here a novel bio-inspired strategy is reported to acquire transparent flexible electrodes with both high transparency and high conductivity which outperform other transparent electrodes. It simultaneously exhibits reliable flexibility during a series of mechanical tests. All these properties of MXene electrodes result from well-designed hierarchical leaf vein network structure and strong adhesion between MXene and urea-treated substrates. In applications, a free-standing semi-transparent UV photodetector is constructed using the MXene electrodes, showing high-performance UV detection as well as superb flexibility and stability. The method provides a new route for MXene based optoelectronics.
关键词： bio-inspired design,MXene,UV photodetection,transparent electrodes,flexible photodetectors
更新于2025-09-19 17:13:59
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Recent developments in flexible photodetectors based on metal halide perovskite
摘要： Flexible photodetectors (FPDs) have been receiving increasing attention in recent years because of their potential applications in electronic eyes, bioinspired sensing, smart textiles, and wearable devices. Moreover, metal halide perovskites (MHPs) with outstanding optical and electrical properties, good mechanical flexibility, low-cost and low-temperature solution-processed fabrication have become promising candidates as light harvesting materials in FPDs. Herein, we comprehensively review the developments of FPDs based on MHPs reported recently. This review firstly provides an introduction with respect to the performance parameters and device configurations of perovskite photodetectors, followed by the specific requirements of FPDs including substrate and electrode materials. Next, chemical compositions, structures and preparation methods of MHPs are presented. Then, the FPDs on the basis of single-component perovskite and hybrid structure perovskite are discussed, subsequently, self-powered flexible perovskite photodetectors were presented. In the end, conclusions and challenges are put forward in the field of FPDs based on perovskites.
关键词： metal halide perovskites,flexible photodetectors,self-powered
更新于2025-09-11 14:15:04