Abstract
Optical detectors are essential for gas detection using optical technology. This study introduces an armchair graphene nanoribbon (AGNR) molecular optical gas detector with two conjugated molecular elements and a non-conjugated interface for gas detection using optical technology. The detector absorbs light and generates peaks in the current-voltage curve that correspond to gas concentration and the Raman frequency spectrum. The detector exhibits negative resistances controlled by input light frequency, suitable for high-frequency oscillators. Multiple gases can be simultaneously identified and monitored using the detector. The detector was analyzed using the non-equilibrium Green function method and offers high-speed, accurate selectivity, precise gas detection, and reproducibility with multiple electrical outputs.
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