Lu, JianxunShao, BingyaoHuang, Ren-WuGutiérrez-Arzaluz, LuisChen, ShulinHan, ZhenYin, JunZhu, HongweiDayneko, SergeyHedhili, Mohamed NejibSong, XinYuan, PengDong, Chunwei| Zhou, RenqianSaidaminov, Makhsud I.Zang, Shuang-QuanMohammed, Omar F.Bakr, Osman M.2025-01-232025-01-232024Lu, J., Shao, B., Huang, R., Gutiérrez-Arzaluz, L., Chen, S., Han, Z., Yin, J., Zhu, H., Dayneko, S., Hedhili, M. N., Song, X., Yuan, P., Dong, C., Zhou, R., Saidaminov, M. I., Zang, S., Mohammed, O. F., & Bakr, O. M. (2024). High-efficiency circularly polarized light-emitting diodes based on chiral metal nanoclusters. Journal of the American Chemical Society, 146(6), 4144–4152. https://doi.org/10.1021/jacs.3c13065https://doi.org/10.1021/jacs.3c13065https://hdl.handle.net/1828/20979Circularly polarized light-emitting diodes (CP-LEDs) are critical for next-generation optical technologies, ranging from holography to quantum information processing. Currently deployed chiral luminescent materials, with their intricate synthesis and processing and limited efficiency, are the main bottleneck for CP-LEDs. Chiral metal nanoclusters (MNCs) are potential CP-LED materials, given their ease of synthesis and processability as well as diverse structures and excited states. However, their films are usually plagued by inferior electronic quality and aggregation-caused photoluminescence quenching, necessitating their incorporation into host materials; without such a scheme, MNC-based LEDs exhibit external quantum efficiencies (EQEs) < 10%. Herein, we achieve an efficiency leap for both CP-LEDs and cluster-based LEDs by using novel chiral MNCs with aggregation-induced emission enhancement. CP-LEDs using enantiopure MNC films attain EQEs of up to 23.5%. Furthermore, by incorporating host materials, the devices yield record EQEs of up to 36.5% for both CP-LEDs and cluster-based LEDs, along with electroluminescence dissymmetry factors (|gEL|) of around 1.0 × 10–3. These findings open a new avenue for advancing chiral light sources for next-generation optoelectronics.enAttribution 4.0 InternationalArticleDepartment of Electrical and Computer Engineering