TY - GEN A1 - Ghosh, Sujoy Kumar A1 - Sinha, Tridib Kumar A1 - Xie, Mengying A1 - Bowen, Christopher Rhys A1 - Garain, Samiran A1 - Mahanty, Biswajit A1 - Roy, Krittish A1 - Henkel, Karsten A1 - Schmeißer, Dieter A1 - Kim, Jin Kuk A1 - Mandal, Dipankar T1 - Temperature–Pressure Hybrid Sensing All-Organic Stretchable Energy Harvester T2 - ACS Applied Electronic Materials N2 - The design and development of intrinsically stretchable all-organic self-powered sensors concurrently perceiving temperature and pressure remain a challenge but deliver an exciting platform to realize environmentally friendly wearable electronics. In this approach, a biomimetic all-organic stretchable energy harvester is designed by a xylitol-added poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS/Xyl) film as a compatible overlay electrode with polyaniline-reinforced one-dimensional aligned poly(vinylidene fluoride) hybrid electroactive soft nanowires. The gradient of elastic modulus between the electrode and the active nanowire component enables the all-organic device to manifest excellent power-generating performance under external temperature fluctuation (∼3 μW/m2 under ΔT ∼ 92 K) and mechanical force (∼31 μW/cm2 at 30 N). Importantly, the device renders simultaneous energy scavenging of temperature and pressure changes under pressing and stretching conditions (∼20%). The excellent mechanosensitivity (∼100 mV/N), fast response time (∼1 ms), outstanding mechanical and thermal stability, and good temperature resolution <10 K enable the harvester to act as an epidermal sensor, which simultaneously detects and discriminates both subtle pressure and thermal deviations exposed to an epidermis surface. The real-time recording and wireless transferring of physiological signals to a smartphone indicate an effective way to realize remote healthcare monitoring for early intervention. KW - all-organic KW - piezoelectric KW - pyroelectric KW - energy harvester KW - sensor KW - healthcare monitoring Y1 - 2021 U6 - https://doi.org/10.1021/acsaelm.0c00816 SN - 2637-6113 VL - 3 IS - 1 SP - 248 EP - 259 ER -