High-Performance Piezoelectric Nanogenerator Based on Low-Entropy Structured Nanofibers for a Multi-Mode Energy Harvesting and Self-Powered Ultraviolet Photodetector
High-Performance Piezoelectric Nanogenerator Based on Low-Entropy Structured Nanofibers for a Multi-Mode Energy Harvesting and Self-Powered Ultraviolet Photodetector
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DOI：
10.1021/acsaelm.2c00411
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发表时间：
2022-05-30
影响因子：
4.7
通讯作者：
Zhang, Tianjin
中科院分区：
文献类型：
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作者：
Qin, Wancheng;Zhou, Peng;Zhang, Tianjin
基于柔性无机纳米材料的压电纳米发电机（PNG）由于其优异的柔韧性和高输出性能而备受关注。然而，在压电复合材料中实现高无机纳米材料的分散性仍然是提高电输出的一个挑战。我们实现了一种通过与氧化锌纳米颗粒生成d -苯丙氨酸（D-phe）螯合物来提高氧化锌纳米颗粒植入聚偏氟乙烯三氟乙烯（P(VDF-TrFE)）复合材料中的分散性的方法。用螯合D-phe@ZnO/P（VDF-TrFE）复合材料组装的柔性电子器件具有多功能和优越的电输出。D-phe@ZnO/P(VDF-TrFE) PNG的最大输出电压为33 V，功率密度为8.5 mu W/cm(2)，与纯P（VDF-TrFE）和ZnO/P（VDF-TrFE）复合PNG相比有显著提高。设计的PNG可以通过手指轻敲获得25v的输出电压，并提供足够的功率点亮15个led。此外，所设计的复合材料对紫外线光照的高灵敏度和快速响应表明了它们在自供电紫外光电探测器中的潜在应用。这种纳米发电机具有多种应用模式，显示了压电致光技术的巨大应用潜力。
Piezoelectric nanogenerators (PNG) based on flexible inorganic nanomaterials have attracted significant attention due to their superior flexibility and high output performance. However, achieving high inorganic nanomaterial dispersibility in piezoelectric composites is still a challenge for enhancing the electrical outputs. We have implemented a method for increasing the dispersibility of zinc oxide (ZnO) nanoparticles implanted in poly(vinylidene fluoride trifluoroethylene) (P(VDF-TrFE)) composites by generating a D-phenylalanine (D-phe) chelate with ZnO nanoparticles. The flexible electronic devices assembled with the chelate D-phe@ZnO/P(VDF-TrFE) composites possess multifunctionality and superior electrical outputs. D-phe@ZnO/P(VDF-TrFE) PNG exhibits a maximum output voltage of 33 V and a power density of 8.5 mu W/cm(2), which are significant improvement compared to pure P(VDF-TrFE) and ZnO/P(VDF-TrFE) composite PNGs. An output voltage of 25 V can be obtained from the designed PNG by finger tapping and provided sufficient power to light 15 LEDs. Furthermore, the high-sensitivity and fast-response to the ultraviolet (UV) illumination of the designed composites demonstrate their potential application of the self-powered UV photodetectors. Such a nanogenerator has multiple application modes, indicating great potential in the application of the piezophototropic technology.