首页|Ultrasensitive V doped WO3 1D nanorods heterojunction photodetector with pronounced photosensing activities

Ultrasensitive V doped WO3 1D nanorods heterojunction photodetector with pronounced photosensing activities

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.In this study, vanadium-doped tungsten oxide (V-WO3) nanorods heterostructures are designed by a simple, facile, and eco-friendly hydrothermal method and applied for photo-sensing activities. Physical characterization results indicate the phase purity, crystalline nature, tuneable energy bandgap, higher surface area, and successful formation of V doped WO3 nanorods. Optoelectronic properties reveal pronounced photo-sensing capabilities of the designed material demonstrating efficient charge transfer. The photocurrent density is enhanced with laser power. Large values of open-circuit voltage (Voc) and short-circuit current (Isc) in the range of 0.91 V and 28 mA/cm2, respectively, are obtained at 56 mW/cm2 power. The Isc is enhanced considerably as a function of power intensity of laser due to the formation of large number of photo-induced electron-hole pairs and large value of built-in potential. Furthermore, to estimate the response time of the device, the measured temporal photoresponse is 4500 A/W, several-fold higher than previously reported materials, associated with suppression in the dark current. In addition, the detectivity of V doped WO3 NRs photodetector lies in the range of 5.15×1011 Jones and the calculated value of detectivity and EQE is ~70%. These results are interesting and provide a roadmap to design ultrasensitive photodetectors.

Hydrothermal methodPhotocurrentPhotodetectivityPhotodetectorPhotoresponseTungsten oxide nanorods

Ikram M.、Rasheed S.、Hussain D.、Afzal A.M.、Shad N.A.、Javed Y.、Mohyuddin A.、Alomayri T.、Sajid M.M.、Almahri A.

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Jamil ur Rehman Center for Genome Research PCMD International Center for Chemical and Biological Sciences University of Karachi

HEJ Research Institute of Chemistry International Center for Chemical and Biological Sciences University of Karachi

Department of Physics Riphah International University Lahore Campus

National Institute of Biotechnology mil ur Rehman Center for Genome Researchand Genetic Engineering

Department of Physics University of Agriculture Faisalabad

Department of Chemistry The Emerson University Multan

Department of Physics Faculty of Applied Science Umm Al-Qura University

Henan Key Laboratory of Photovoltaic Materials School of Physics Henan Normal University

Department of Chemistry College of Science and Humanities in Al-Kharj Prince Sattam Bin Abdul Aziz University

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2022

10.1016/j.jallcom.2022.164753

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.909
  • 4
  • 63