Tuesday, May 2025

02:00 PM - 02:20 PM

Room: LL20D

Session: Emerging Electronic Textile Technologies

Perovskite-Quantum-Wires-Based Full-Color Fiber Light-Emitting Diodes for Flexible Electronics

Student

• Beitao Ren

  The Hong Kong University of Science and Technology

Description:

Fiber light-emitting diode (Fi-LED), which can be used for wearable lighting and display devices, is one of the key components for fiber/textile electronics. However, it remains impediments to overcome on device fabrication with fiber-like substrates, such as gravity-induced nonuniform coating, low-quality crystallization, etc. Here, we uniformly grew perovskite quantum wires (PeQWs) by filling high-density alumina nanopores on aluminum fibers by dip-coating. The obtained PeQWs exhibit a prominent photoluminescence quantum yield of nearly 90% and a noticeable photoluminescence lifetime of up to 1,500 hours under ambient condition. With further conformal deposition of transporting layer and electrode, as well as the polydimethylsiloxane encapsulation, full-color PeQWs-based Fi-LEDs with mechanical bendability, stretchability, and waterproof feature have been successfully demonstrated.