Nano Energy最新文献_第10页

Dynamic p-n junction direct current-generating triboelectric nanogenerators based on lead-free perovskite

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-11 DOI: 10.1016/j.nanoen.2025.110857

Yong Jiao , Zhenhua Lin , Yumeng Xu , Boyao Zhang , Xing Guo , Zhaosheng Hu , Xue Zhao , Yue Hao , Jingjing Chang

{"title":"Dynamic p-n junction direct current-generating triboelectric nanogenerators based on lead-free perovskite","authors":"Yong Jiao , Zhenhua Lin , Yumeng Xu , Boyao Zhang , Xing Guo , Zhaosheng Hu , Xue Zhao , Yue Hao , Jingjing Chang","doi":"10.1016/j.nanoen.2025.110857","DOIUrl":"10.1016/j.nanoen.2025.110857","url":null,"abstract":"<div><div>Direct current output triboelectric nanogenerator (DC-TENG) based on dynamic p-n junction has important applications in energy harvesting, micro/nano-sensing, etc. In this study, a DC-TENG based on n-type lead-free Cu<sub>2</sub>AgBiI<sub>6</sub> (CABI) perovskite is proposed for the first time, and the output performance of the DC-TENG is enhanced by passivation of CABI films with phenylethylammonium iodide (PEAI) and combining 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) and Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) molecular additives into the p-type 2,2ˊ,7,7ˊ-tetrakis (N, N-di-p-methoxyphenyl-amine) 9, 9ˊ-spirobifluorene (Spiro) film. The passivated CABI with PEAI and Spiro+PTAA+F4TCNQ based DC-TENG exhibits a champion voltage of 0.81 V, a current density of 11.23 μA cm<sup>−2</sup>, and a power density of 1.25 W m<sup>−2</sup>. Moreover, its feasibility in temperature and humidity sensing and direct powering of capacitors has been demonstrated. This study not only expands the application of lead-free perovskite in DC-TENG, but also proposes an effective strategy to enhance the output performance of DC-TENG and accelerate its development.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110857"},"PeriodicalIF":16.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ formation of inorganic-rich solid electrolyte interphase by using antimony and fluorine-modified Cu foam for dendrite-free sodium metal anodes

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-10 DOI: 10.1016/j.nanoen.2025.110858

Xiang Zheng , Zining Zhang , Zhiqian Li , Chaohong Shi , Yusuke Yamauchi , Jing Tang

{"title":"In-situ formation of inorganic-rich solid electrolyte interphase by using antimony and fluorine-modified Cu foam for dendrite-free sodium metal anodes","authors":"Xiang Zheng , Zining Zhang , Zhiqian Li , Chaohong Shi , Yusuke Yamauchi , Jing Tang","doi":"10.1016/j.nanoen.2025.110858","DOIUrl":"10.1016/j.nanoen.2025.110858","url":null,"abstract":"<div><div>The practical application of sodium metal batteries (SMB) is hindered by severe dendrite formation. In-situ growth of an artificial inorganic-rich solid electrolyte interphase (SEI) to mitigate dendrite formation has garnered significant attention. This study reports the design and fabrication of an antimony and fluorine-modified 3D Cu foam current collector (Sb-CuF<sub>2</sub>@Cu), which induces the in-situ forming of inorganic-rich SEI layer during Na metal deposition. As investigated by X-ray depth profiles and ex-situ transmission electron microscopy, the SEI consists of a Sb<sup>3 +</sup> (Na<sub>2</sub>Sb<sub>4</sub>O<sub>7</sub>)-containing external layer and a NaF-rich internal layer. Theoretical calculations and in-situ optical microscopy have demonstrated that the inorganic-rich SEI facilitates rapid Na<sup>+</sup> transfer across the entire 3D framework, resulting in densely packed and dendrite-free Na metal anodes. The external layer facilitates Na<sup>+</sup> conduction, stabilizes Na<sup>+</sup> flux, and acts as a buffer layer; whereas the inner layer inhibits ongoing reduction reactions and equalizes the electric field, further suppressing dendrite growth. Consequently, the symmetrical cells exhibit an extended cycle life of 1000 hours at 2 mA cm<sup>−2</sup> and 1 mAh cm<sup>−2</sup>. Moreover, the Sb-CuF<sub>2</sub>@Cu/Na anode combined with the Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> cathode results in a full battery with a long service life of 1000 cycles at 5 C.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110858"},"PeriodicalIF":16.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in air electrode fabrication and structure-performance relationships for solid oxide cells using pulsed laser deposition

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-10 DOI: 10.1016/j.nanoen.2025.110855

Yinghua Niu , Mengjun Tang , Waqas Muhammad , Yucun Zhou , Sheng Ma , Zongqing Tian , Weirong Huo , Liang Qiao , Weiqiang Lv

{"title":"Advancements in air electrode fabrication and structure-performance relationships for solid oxide cells using pulsed laser deposition","authors":"Yinghua Niu , Mengjun Tang , Waqas Muhammad , Yucun Zhou , Sheng Ma , Zongqing Tian , Weirong Huo , Liang Qiao , Weiqiang Lv","doi":"10.1016/j.nanoen.2025.110855","DOIUrl":"10.1016/j.nanoen.2025.110855","url":null,"abstract":"<div><div>Solid oxide cells (SOCs) are high-efficiency electrochemical energy conversion and storage devices capable of operating in both fuel cell and electrolyzer modes. However, their commercialization is hindered by insufficient durability and reliability. The air electrodes, crucial for oxygen reduction and evolution reactions (ORR and OER), significantly impact the performance and durability of SOCs, especially at low temperatures. This review focuses on the innovative use of pulsed laser deposition (PLD) for fabricating and optimizing air electrodes. PLD offers precise control over film composition, morphology, and microstructure, making it a promising technique for enhancing SOC performance. The review delves into the unique advantages of PLD, including its ability to tailor electrode microstructure and investigate degradation mechanisms. By exploring the latest advancements and future perspectives of PLD technology, this review provides valuable insights into developing more durable and efficient air electrodes for SOCs.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110855"},"PeriodicalIF":16.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suppression of radical cation formation in dopant-free hole-transporting materials to inhibit iodine migration for efficient and stable perovskite solar cells

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-10 DOI: 10.1016/j.nanoen.2025.110859

Jiaxing Huang , Yiheng Zhang , Jing Wang , Jianbin Wang , Jie Su , Yongbo Yuan , Yonggang Min , Wanqing Cai , Yuan Li , Qifan Xue

{"title":"Suppression of radical cation formation in dopant-free hole-transporting materials to inhibit iodine migration for efficient and stable perovskite solar cells","authors":"Jiaxing Huang , Yiheng Zhang , Jing Wang , Jianbin Wang , Jie Su , Yongbo Yuan , Yonggang Min , Wanqing Cai , Yuan Li , Qifan Xue","doi":"10.1016/j.nanoen.2025.110859","DOIUrl":"10.1016/j.nanoen.2025.110859","url":null,"abstract":"<div><div>Developing dopant-free hole-transporting materials (HTMs) with high hole mobilities is essential to achieve efficient and stable inorganic perovskite solar cells (PVSCs). Herein, two linear organic small molecules IDTT-EtCz and IDTT-PhCz with D–A–D’–A–D configuration were designed and synthesized via two high yield steps, and they were successfully employed as HTMs with effective defect passivation in all-inorganic PVSCs. Notably, the IDTT-PhCz exhibits a deeper highest occupied molecular orbital energy level comparing with that of IDTT-EtCz, along with the enhancement of antioxidant activity towards iodine. Interestingly, IDTT-PhCz with aromatized terminal groups showed significantly increased short contacts and higher hole mobilities than IDTT-EtCz. Furthermore, the IDTT-PhCz has been proven to possess effective surface passivation capability and appropriate energy level alignment at the hole-extraction interface, efficiently suppressing recombination loss and enhancing charge collection. Finally, CsPbI<sub>3</sub>-based PVSCs with IDTT-PhCz as dopant-free HTM achieve a champion power conversion efficiency (PCE) of 21.0 %, which is one of the highest values reported thus far for all-inorganic PVSCs. The optimized unencapsulated device maintains over 90 % of the initial PCE after 500 hours in a glove box at 60°C in the dark, indicating superior thermal stability. Additionally, the CsPbI<sub>2</sub>Br PVSC based on IDTT-PhCz exhibits an impressive PCE of 18.0 %, and a CsPbI<sub>2</sub>Br/organic tandem solar cell based on IDTT-PhCz achieves a high PCE of 25.0 % (24.66 % certified), which is one of the highest efficiencies among the n-i-p perovskite/organic tandem solar cells to date. Overall, this work demonstrates the superiority and generalizability of the D–A–D’–A–D-type design strategy for achieving efficient PVSCs.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110859"},"PeriodicalIF":16.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resonance-enhanced hybrid-principle droplet electricity generator based on femtosecond laser-ablated superhydrophobic surface

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-08 DOI: 10.1016/j.nanoen.2025.110829

Pinliang Ren , Yuxuan Zhang , Chaowei Wang, Xiaoxu Rao, Xinyu Gui, Yuxin Li, Xiuwen Wang, Huichun Ye, Jiawen Li, Dong Wu, Yanlei Hu

{"title":"Resonance-enhanced hybrid-principle droplet electricity generator based on femtosecond laser-ablated superhydrophobic surface","authors":"Pinliang Ren , Yuxuan Zhang , Chaowei Wang, Xiaoxu Rao, Xinyu Gui, Yuxin Li, Xiuwen Wang, Huichun Ye, Jiawen Li, Dong Wu, Yanlei Hu","doi":"10.1016/j.nanoen.2025.110829","DOIUrl":"10.1016/j.nanoen.2025.110829","url":null,"abstract":"<div><div>Maximizing the energy harvested from falling droplets through the development of hybrid droplet electricity generators holds significant promise for solving distributed power supply issues and mitigating the energy crisis. However, current multi-principle droplet generators still face challenges such as high energy dissipation, instability, and dependence on rainy weather. In this study, we developed a droplet-based resonance-enhanced hybrid generator (RHG) that augments the energy conversion efficiency through the synergistic application of electromagnetic induction and the triboelectric effect. By employing femtosecond laser ablation to create micro-nano structures on the triboelectric materials, a three-fold enhancement in peak output voltage was achieved compared to smooth surface. Moreover, micro-nano structures facilitate superhydrophobic, preventing residual liquid droplets and contaminating particles from remaining on the surface. In the resonant state (f≈4.3 Hz), a single droplet can generate up to 54.8 μC of transferred charge and 306 V of output voltage, increasing energy conversion efficiency to 12.6 %. It is also demonstrated that this device can charge a 10 mF capacitor to 1.8 V within 400 s and power a wireless temperature and humidity sensor through a capacitor circuit. This lays the foundation for the efficient collection of green energy and the future of self-powered sensors.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110829"},"PeriodicalIF":16.8,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulating interfacial chemistry of layered lithium-rich oxide by weakly solvating electrolyte

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-08 DOI: 10.1016/j.nanoen.2025.110850

Huinan Yu , Yanru Yang , Runjing Xu , Jiayun Zhang , Jinyu Yang , Jiafeng Ruan , Fei Zhang , Yang Liu , Dalin Sun , Fei Wang

{"title":"Regulating interfacial chemistry of layered lithium-rich oxide by weakly solvating electrolyte","authors":"Huinan Yu , Yanru Yang , Runjing Xu , Jiayun Zhang , Jinyu Yang , Jiafeng Ruan , Fei Zhang , Yang Liu , Dalin Sun , Fei Wang","doi":"10.1016/j.nanoen.2025.110850","DOIUrl":"10.1016/j.nanoen.2025.110850","url":null,"abstract":"<div><div>Layered lithium-rich oxide (LLRO) cathodes for lithium-ion batteries exhibit outstanding specific capacity but suffer from irreversible oxygen release, which leads to continuous voltage decay. The interfacial chemistry between electrolyte and cathode material is crucial for improving the stability of LLRO. Commercial carbonate electrolytes (CCE) tend to form an organic-rich interphase, which is susceptible to dissolution during cycling. On the contrary, an inorganic-rich interphase is robust and electrochemically stable. To achieve this goal, lithium difluoro-oxalate borate (LiDFOB) and tris(2,2,2-trifluoroethyl) phosphate (TFEP) are used to formulate a weakly solvating electrolyte (WSE). In this design, DFOB<sup>-</sup> anion participates in the primary solvation sheath (PSS), forming an anion-dominated structure that facilitates the formation of an inorganic-rich, LiF-based cathode electrolyte interphase (CEI). Electrochemical performance indicates that voltage decay is significantly suppressed in WSE, with an average voltage drop of only 0.45 mV/cycle, compared to 2.51 mV/cycle in CCE. The anion-derived interphase slows the failure process of LLRO, providing valuable insights into electrolyte design for enhancing material stability.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110850"},"PeriodicalIF":16.8,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A solar-driven nitrate molten salt lithium-oxygen battery based on built-in bifunctional cathode

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-07 DOI: 10.1016/j.nanoen.2025.110851

Zhihuan Li , Ting Zhu , Zhiqian Yu , Zijie Lin , Shimin Chen , Min Wang , Yuhui Sun , Hucheng Song , Linwei Yu , Jun Xu , Kunji Chen

{"title":"A solar-driven nitrate molten salt lithium-oxygen battery based on built-in bifunctional cathode","authors":"Zhihuan Li , Ting Zhu , Zhiqian Yu , Zijie Lin , Shimin Chen , Min Wang , Yuhui Sun , Hucheng Song , Linwei Yu , Jun Xu , Kunji Chen","doi":"10.1016/j.nanoen.2025.110851","DOIUrl":"10.1016/j.nanoen.2025.110851","url":null,"abstract":"<div><div>Lithium-oxygen (Li-O<sub>2</sub>) batteries using molten nitrate electrolyte (typically LiNO<sub>3</sub>-KNO<sub>3</sub> eutectic) are considered to have extremely high theoretical energy density due to its unique reaction path achieving complete utilization of O<sub>2</sub>. However, suffering from high temperature application environment and limited cathode catalytic ability, further development of the battery has been hindered. In this study, we successfully designed a bifunctional cathode, which could not only drive batteries by photothermal effect, but also effectively catalyze the mediate reaction in electrolyte. Helped by the newly adopted TiO<sub>2</sub> nanorod substrate and Ru catalyst with plasmon effect, a high absorption (>93 %) to full spectrum of sunlight is realized, making the assembled battery easier to reach operating temperature. Furthermore, three-dimensional nanostructure brings more catalytic active site and significantly reduced the overpotential. This is the first light-driven molten nitrate Li-O<sub>2</sub> battery, exhibiting excellent performance in terms of capacity (>10 mAh), stability (>500 cycles), energy efficiency (>90 %), and other aspects. Our work provides effective strategies for enhancing the kinetics of the mediate reaction in nitrate molten salt Li-O<sub>2</sub> batteries, and takes a significant step towards their practical application.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110851"},"PeriodicalIF":16.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A sustainable alcohol fuel cell for co-generation of electricity and value-added chemicals with negative carbon emission

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-07 DOI: 10.1016/j.nanoen.2025.110853

Hao Chen , Jia Song , Yuanfeng Liao , Yanhong Weng , Huanhua You , Xin Long , Danni Liu , Jiujun Zhang , Jing-Li Luo , Xian-Zhu Fu

引用次数: 0

Piezoelectric materials for bone implants: Opportunities and challenges

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-07 DOI: 10.1016/j.nanoen.2025.110841

Xionggang Chen, Shiping Zhang, Shifeng Peng, Yu Qian, Jianhong Zhou

{"title":"Piezoelectric materials for bone implants: Opportunities and challenges","authors":"Xionggang Chen, Shiping Zhang, Shifeng Peng, Yu Qian, Jianhong Zhou","doi":"10.1016/j.nanoen.2025.110841","DOIUrl":"10.1016/j.nanoen.2025.110841","url":null,"abstract":"<div><div>The rapid advancement of modern medical technology and materials science has facilitated extensive research and application of artificial bone implants for treating bone defects. However, these implants still face challenges such as insufficient osseointegration and bacterial infections, which limit their clinical application. Piezoelectric materials have garnered considerable attention for their potential to promote bone repair and enhance the sustainability of medical applications. In this review, we systematically examine the advances in piezoelectric materials for bone implants. First, the potential of piezoelectric materials in addressing major clinical challenges in bone implantation are discussed. The most commonly used piezoelectric materials in bone implants, including inorganic and organic materials as well as piezoelectric composites, are classified and examined. Subsequently, we explore the various forms of piezoelectric materials used in bone implants, such as particles, coatings, and scaffolds, highlighting their advantages and limitations in improving osseointegration and preventing bacterial infections. Finally, the progress in the clinical application of piezoelectric materials is further analyzed, and both the opportunities and challenges they present in the treatment of bone defects are proposed. Overall, this review systematically examines the advances in piezoelectric materials for bone implants and aims to facilitate the development of novel piezoelectric materials and accelerate the transition of these materials from basic research to clinical application.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110841"},"PeriodicalIF":16.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143575405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-performance flexible deep ultraviolet photodetector based on crossed microwires heterojunction for real-time target trajectory tracking system

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-03-06 DOI: 10.1016/j.nanoen.2025.110833

Yancheng Chen , Ying Li , Yaqian Yang , Xun Yang , Chongxin Shan , Guozhen Shen

{"title":"High-performance flexible deep ultraviolet photodetector based on crossed microwires heterojunction for real-time target trajectory tracking system","authors":"Yancheng Chen , Ying Li , Yaqian Yang , Xun Yang , Chongxin Shan , Guozhen Shen","doi":"10.1016/j.nanoen.2025.110833","DOIUrl":"10.1016/j.nanoen.2025.110833","url":null,"abstract":"<div><div>Deep ultraviolet photodetectors have enormous potential applications in guidance systems, fire detection, and pilotless automobiles. Ga<sub>2</sub>O<sub>3</sub> materials with ultra-wide optical bandgap are powerful candidates for deep ultraviolet detection. Herein, a high-performance crossed Ga<sub>2</sub>O<sub>3</sub>/CsCu<sub>2</sub>I<sub>3</sub> microwires heterojunction flexible photodetector was successfully prepared using a simple mechanical transfer method. The photodetectors exhibit excellent optoelectrical properties towards solar-blind light, with a high responsivity of 178.9 A/W, a large specific detectivity of 1.1 × 10<sup>11</sup> Jones, a great photo-to-dark current ratio of 5.4 × 10<sup>4</sup>, and an ultra-fast response/decay time of 19 μs/0.4 ms under −1 V bias. Especially, due to formation of the built-in electric field, the photodetector can operate normally at zero bias with a responsivity of 5.9 mA/W. Thanks to the excellent mechanical stability of 1D micro-nanostructure materials, the photodetectors show a negligible decrease in photoresponse after 600 bending cycles. In addition, a light-tracking system was prepared using the photodetectors, which can track the movement of light source and display azimuth of the light spot in real-time on the user interface under ambient light. Our work provides a promising route for high-performance flexible deep ultraviolet photodetectors, and facilitates their application in intelligent tracking and positioning.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"138 ","pages":"Article 110833"},"PeriodicalIF":16.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0