Synergistic Ligand and Composition Control for Bright and Stable CsPbBr3/Cs4PbBr6 Core/Shell Colloidal Perovskite Nanocrystals Jae Woo Kim, Jigeon Kim, Jihwan Kim, Huieun Kim, Haereum Jo, Wonjong Lee, Jongchul Lim, Joonyoung F. Joung*, Younghoon Kim* J. Alloys Compd., 1080, 190954 (2026)