NNature Materials3/27/2026Narrowband helical emitter with frontier orbital confinement for stable deep-blue hybrid-tandem organic light-emitting diodesChuanqin Cheng·L. -M. Duan·Minqiang Mai·Chenglong Li·Dongdong ZhangRead at Nature MaterialsTagsOrganic Light-Emitting Diodes ResearchElectrical and Electronic Engineering