• A flexible dual-mode photodetector array enables simultaneous electrical and optical signal generation for human–machine collaborative infrared imaging.
• Geometrically asymmetric electrodes enhance the photothermoelectric responsivity to 0.33 mA W−1, doubling performance compared to symmetric designs.
• The device maintains stable performance after 300 bending cycles, demonstrating excellent mechanical flexibility for wearable applications.
• Coupling MXene photothermal conversion with thermochromic composites enables real-time visualization of invisible infrared radiation, setting a new benchmark for human–machine collaborative optoelectronics.