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Eco-Friendly Laser-Induced Graphene/Perovskite Hybrids for Eco-Friendly Photodetectors
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DOI：10.1002/aelm.70522.png)
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Abstract
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The growing demand for flexible electronics has paralleled increasing attention to sustainability and eco-friendly device fabrication. Laser-induced graphene (LIG), which can be directly generated from natural carbon sources, offers a cost-effective and environmentally responsible approach to next-generation electronics. In this work, we demonstrate the direct laser writing of LIG on cellulose filter paper under ambient conditions, producing a flexible and patterned sensing substrate. To enhance optoelectronic performance, LIG was further integrated with the highly light-absorbing MAPbI3 perovskite via a simple solution deposition method. Photodetectors based on pure LIG and hybrid LIG/MAPbI3 structures were fabricated and systematically compared. The hybrid devices exhibited a nearly tenfold improvement in responsivity (13.9 to 136.9 mA/W) and a sevenfold increase in detectivity (7.67 × 107 to 5.33 × 108 Jones) over pure LIG devices, while retaining excellent stability after 1000 bending cycles. These results highlight paper-based LIG/perovskite photodetectors as promising candidates for sustainable optoelectronic applications.
Keywords:
laser-induced graphene
MAPbI3
perovskite
photodetectors
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