Toward Ultrathin and Intrinsically Stretchable Optoelectronic Devices

In recent years, deformable electronic devices have garnered significant attention for their potential in various applications, ranging from flexible displays to wearable technology. However, their mechanical rigidity and relatively large size often preclude seamless integration into flexible, curved, or dynamic environments. We explore the capabilities of ultrathin and intrinsically stretchable optoelectronic devices, such as light-emitting diodes (LEDs) and photodetectors, enabled by the synergistic incorporation of advanced nanomaterials like quantum dots and perovskites, along with cutting-edge printing techniques. The ultrathin architecture facilitates the deployment of high-definition, energy-efficient perovskite LEDs as skin-attachable electronic tattoos, as well as the use of heavy-metal-free photodetectors in wearable photoplethysmogram (PPG) sensors. Moreover, the intrinsic stretchability of displays represents a significant milestone in the design and realization of next-generation soft optoelectronic systems that can adapt to a diverse range of form factors.