Enhanced Flexible Vacuum-Ultraviolet Photodetectors Based on Hexagonal Boron Nitride Nanosheets via Al Nanoparticles.

Youwei Chen, Jiaxing Li, Qiang Li, Wannian Fang, Haifeng Liu, Ziyan Lin, Tao Wang, Feng Yun

Abstract read

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Article in Nanomaterials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Microstructure Semiconductor Materials and Optoelectronic Applications.Nanomaterials (Basel, Switzerland) · 2026
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5 · Who and what money

Authors and funding

8 authors.

Youwei ChenKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Jiaxing LiKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Qiang LiKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.ORCID 0000-0001-9522-5234

Wannian FangSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Haifeng LiuSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Ziyan LinSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Tao WangSchool of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, UK.ORCID 0000-0001-5976-4994

Feng YunSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Funding

the Fundamental Research Funds for the Central Universities xzd012023045the Fundamental Research Funds for the Central Universities xzd012024055the Fundamental Research Funds for the Central Universities xzy012022088the Fundamental Research Funds for the Central Universities xzy022024061

6 · The paper itself

Abstract

This work reports an enhanced flexible vacuum-ultraviolet (VUV) photodetector on a polyimide (PI) substrate based on hexagonal boron nitride nanosheets (BNNSs) with Al nanoparticles (Al NPs). The BNNS film were prepared via liquid-phase exfoliation combined with a self-assembly process, and size-controllable Al NPs were constructed on the BNNS's surface by electron-beam evaporation followed by thermal annealing. When the Al film thickness was 15 nm, the annealed Al NPs exhibited a pronounced enhancement of photoelectric effects at a wavelength of 185 nm. Combined with finite-difference time-domain (FDTD) simulations, it was confirmed that the localized surface plasmon resonance (LSPR) generated by Al NPs significantly enhanced the local electromagnetic field and effectively coupled into the interior of BNNSs. These exhibited a strong plasmon-enhanced absorption effect and thereby improved light absorption and carrier generation efficiency. The flexible photodetector based on this structure showed an increase in the photo-to-dark current ratio from 110.17 to 527.79 under a bias voltage of 20 V, while maintaining fast response and recovery times of 79.79 ms and 82.38 ms, respectively. In addition, the device demonstrated good stability under multiple bending angles and cyclic bending conditions, highlighting its potential applications in flexible solar-blind VUV photo ultraviolet.

Indexed as

aluminum nanoparticlesflexible vacuum-ultraviolet photodetectorshexagonal boron nitride nanosheetslocalized surface plasmon resonance

Identifiers

PMID41677536

DOI10.3390/nano16030187

PMCPMC12899280

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.