Spray-Coated Graphene/Quantum Dots Paper-Based Photodetectors

S. Malik; Y. Zhao; Y. He; X. Zhao; H. Li; L. G. Occhipinti; M. Wang; S. Akhavan

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arXiv · 2311.17675

Spray-Coated Graphene/Quantum Dots Paper-Based Photodetectors

S. Malik·Y. Zhao·Y. He·X. Zhao·H. Li·L. G. Occhipinti·M. Wang·S. Akhavan

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Abstract

Paper is an ideal substrate for the development of flexible and environmentally sustainable ubiquitous electronic systems. When combined with nanomaterials, it can be harnessed for various Internet-of-Things applications, ranging from wearable electronics to smart packaging. In this study, we present a non-vacuum spray deposition of arrays of hybrid single layer graphene (SLG)-CsPbBr3 perovskite quantum dots (QDs) photodetectors on a paper substrate. This approach combines the advantages of two large-area techniques: chemical vapor deposition (CVD) and spray-coating. The first technique allows for the pre-deposition of CVD SLG, while the second enables the spray coating of a mask to pattern CVD SLG, electrode contacts, and photoactive QDs layers. The prepared paper-based photodetectors achieved an external responsivity of 520 A/W under 405 nm illumination at <1V operating voltage. By fabricating arrays of photodetectors on a paper substrate in the air, this work highlights the potential of this scalable approach for enabling ubiquitous electronics on paper.

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S. Malik, Y. Zhao, Y. He, X. Zhao, H. Li, L. G. Occhipinti, M. Wang, S. Akhavan. 2023-11-29. Spray-Coated Graphene/Quantum Dots Paper-Based Photodetectors. https://arxiv.org/abs/2311.17675

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