Kar-Wai Lo

Conflict of Interests The authors declare no conflict of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. Supporting Information Filename Description anie70441-sup-0001-SuppMat.docx13.8 MB Supporting Information References 1, , , J. Organomet. Chem. 2014, 751, 261–285, https://doi.org/10.1016/j.jorganchem.2013.09.035. 2, , , , , Chem. Soc. Rev.

1 Introduction In recent years, organic light-emitting diodes (OLEDs) have made significant progress in operational stability, making them increasingly mature in the field of commercial display panels.[1-4] Due to their ultra-thin thickness, energy-saving, and mechanical flexibility, they are now expected to play an important role in other fields that demand monochromatic and tunable chromaticity,[5-10] such as smart lighting and point-of-care wearable biomedical sensors.[5, 6, 8, 11, 12]...

Colour-tunable organic light-emitting diodes (CT-OLEDs) have a large colour-tuning range, high efficiency and operational stability at practical luminance, making them ideal for human-machine interactive terminals of wearable biomedical devices. However, the device operational lifetime of CT-OLEDs is currently far from reaching practical requirements.