Unveiling the Potential of Colorless Polyimide‐Derived Laser‐Induced Graphene: A Novel Pathway for Advanced Sensor and Energy Harvester Performance

The potential of laser‐induced graphene (LIG), recognized for its distinct attributes in diverse fields, has significantly grown. However, the creation of LIG using colorless polyimide (CPI) films remains unexplored. This research sheds light on the graphitization technique for generating LIG from CPI films via laser techniques, a process validated through ReaxFF simulations. It is also illustrated that CPI integrated with fluorine atoms possesses an elevated porous configuration, rendering it apt for high‐sensitivity, low‐detection limit pressure sensors. The pressure sensor, constructed with LIG derived from CPI, showcases superior performance metrics such as an exceptional sensitivity rate of 60.340 kPa−1 in low‐pressure ranges (1.0–1.5 kPa), prompt response and recovery intervals (27/36 ms), and commendable durability. The sensor's ability is further validated to precisely track human movements. Moreover, the study employs the LIG sourced from CPI as a dielectric‐to‐dielectric triboelectric nanogenerator (TENG), yielding a peak power output of 411.4 mW m−2 under a 40 MΩ load resistance. The CPI‐based LIG offers increased porosity in comparison to traditional LIG, which aids in superior functioning in pressure sensors and TENG devices. This research offers a fresh perspective on the application possibilities of CPI‐sourced LIG, notably in pressure sensors and energy harvesting devices.

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