Monolayer MoS₂ on Paper with a Copper Electrode: An Integrated CVD-Grown Broadband UV-Visible Photodetector.
- 1Department of Physics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
- 2Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
- 3Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Abstract
The commercial viability of flexible and disposable photodetectors is often constrained by the reliance on costly noble-metal electrodes and conventional substrates. Here, we address these challenges by integrating a chemical vapor deposition (CVD)-grown monolayer MoS₂ with a low-cost copper (Cu) electrode on a paper substrate, combining scalable semiconductor synthesis with inexpensive device components. Raman, photoluminescence, and X-ray photoelectron spectroscopy measurements confirmed the crystallinity of the MoS₂ monolayer and its direct bandgap of 1.8 eV. The fabricated device demonstrated a broadband photoresponse covering the ultraviolet and visible regions, achieving a maximum responsivity and specific detectivity of 1.37 mA/W and 3.17 × 10⁹ Jones, respectively, at 320 nm under 5 V bias and an incident power density of 2.14 mW/cm². The device retains a well-resolved photoresponse under bending to a radius of 11.25 mm and over 100 bending cycles, confirming the mechanical robustness of the paper platform. By replacing the noble-metal contacts with low-cost Cu electrodes and conventional polymer substrates with paper while employing scalable CVD-grown MoS₂, this work establishes an economically viable platform for the large-scale manufacture of flexible and disposable photodetectors while providing a scalable pathway toward their large-area manufacture.
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BibTeX
@article{alzahrani2026monolayer,
title = {{Monolayer MoS₂ on Paper with a Copper Electrode: An Integrated CVD-Grown Broadband UV-Visible Photodetector.}},
author = {Amal Alzahrani and Maha Alaqeel and Mohamed Nejib Hedhili and Yaping Zhang and Roaa Sait and Reem Altuwirqi and Hala Al-Jawhari and Arwa Kutbee and Areej Aljarb},
journal = {Micromachines},
year = {2026},
month = sep,
doi = {10.3390/mi17101156},
url = {https://europepmc.org/article/MED/42943913},
note = {CC BY},
}
RIS
TY - JOUR
TI - Monolayer MoS₂ on Paper with a Copper Electrode: An Integrated CVD-Grown Broadband UV-Visible Photodetector.
AU - Amal Alzahrani
AU - Maha Alaqeel
AU - Mohamed Nejib Hedhili
AU - Yaping Zhang
AU - Roaa Sait
AU - Reem Altuwirqi
AU - Hala Al-Jawhari
AU - Arwa Kutbee
AU - Areej Aljarb
PY - 2026
DA - 2026/09/30
JO - Micromachines
DO - 10.3390/mi17101156
UR - https://europepmc.org/article/MED/42943913
AB - The commercial viability of flexible and disposable photodetectors is often constrained by the reliance on costly noble-metal electrodes and conventional substrates. Here, we address these challenges by integrating a chemical vapor deposition (CVD)-grown monolayer MoS₂ with a low-cost copper (Cu) electrode on a paper substrate, combining scalable semiconductor synthesis with inexpensive device components. Raman, photoluminescence, and X-ray photoelectron spectroscopy measurements confirmed the crystallinity of the MoS₂ monolayer and its direct bandgap of 1.8 eV. The fabricated device demonstrated a broadband photoresponse covering the ultraviolet and visible regions, achieving a maximum responsivity and specific detectivity of 1.37 mA/W and 3.17 × 10⁹ Jones, respectively, at 320 nm under 5 V bias and an incident power density of 2.14 mW/cm². The device retains a well-resolved photoresponse under bending to a radius of 11.25 mm and over 100 bending cycles, confirming the mechanical robustness of the paper platform. By replacing the noble-metal contacts with low-cost Cu electrodes and conventional polymer substrates with paper while employing scalable CVD-grown MoS₂, this work establishes an economically viable platform for the large-scale manufacture of flexible and disposable photodetectors while providing a scalable pathway toward their large-area manufacture.
SN - 2072-666X
ER -