Bright Flexible Electrochemiluminescent Devices

Wearable optoelectronics are essential for seamless human-machine interactions, demanding features like flexibility, portability, safety, and high brightness. Traditional devices, like light-emitting capacitors and organic LEDs, either need high voltages or complex fabrication, making them less practical for widespread use. In contrast, electrochemiluminescence emerges as a promising alternative due to its simple structure, low operational voltage, and cost-effective production in standard environmental conditions. Despite these advantages, achieving adequate luminance in ECL devices has been a significant challenge, limiting their application in wearable technology. Our study addresses this issue by introducing an innovative approach to materials and device architecture. This development results in electrochemiluminescent devices that are exceptionally bright with luminance of 1500 cd/m². The advancements in device design and material optimization not only improve the safety and performance of wearable optoelectronics but also pave the way for their broader adoption in various interactive applications, enhancing the user experience in fields ranging from healthcare to consumer electronics.