Hua, L., Wu, H., Xia, Z., Li, M., Liu, Y., Yan, S., Zhu, W., Lee, J. Y., Ren, Z., Wang, Y. (2025). Narrowband Emissive Solution‐Processed Polymer Organic Light‐Emitting Diodes with External Quantum Efficiency Above 30%. Advanced Materials. https://doi.org/10.1002/adma.202502180