ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(2), С. 2583 - 2592

Опубликована: Янв. 3, 2024

Organic piezomaterials have attracted much attention because of their easy processing, lightweight, and mechanic flexibility properties. Developing new smart organic is highly required for new-generation electronic applications. Here, we found a novel piezomaterial charge-transfer complex (CTC) consisting dibenzcarbazole analogue (DBCz) tetracyanoquinodimethane (TCNQ) in the molecular-level heterojunction stacking mode. The DBCz–TCNQ exhibited ferroelectric properties (the saturated polarization ∼1.23 μC/cm2) at room temperature with low coercive field. noncentrosymmetric alignment (Pc space group) led to spontaneous this architecture thus was origin piezoelectric behavior. Lateral nanogenerators (PENGs) based on thermal evaporated CTC thin-film significant energy conversion behavior under mechanical agitation calculated coefficient (d31) ∼33 pC/N. Furthermore, such binary constructed single-electrode PENG could show steady-state sensing performance external stimuli as flexible wearable device precisely detected physiological signals (e.g., finger bending, blink movement, carotid artery, etc.) self-powered supply. This work provides that polar CTCs can act efficient harvesting, conversion, devices supply, enabling great potential healthcare, motion detection, human–machine interfaces, etc.

Язык: Английский