ArticleSensors (Basel, Switzerland)2026
A Unique Sandwich Structure Consisting of Graphene and Pyrene Derivatives for Ultraviolet Light Sensor.
Article in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We propose and demonstrate, for the first time, a sandwich structure of graphene substrates, pyrene derivatives, and an electrolyte for ultraviolet light sensing. A contact capacitor forms at the graphene-electrolyte interface via the electric double layer. When ultraviolet light excites the interlayer of the pyrene derivative, a photo-generated electric field changes the carrier density in graphene, affecting its conductivity. Thus, the sandwich structure responds to ultraviolet light intensity, which is monitored by current changes in different states. Linear fitting shows a strong positive relationship between UV intensity and current (Ids), with R
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