Near-infrared and visible dual-band circularly polarized luminescence from chiral hybrid indium halides co-doped with Yb3+ and Sb3+

• • Record PLQY of 49.9% for Sb3+-doped (R/S-DACH)2In2Br10, two orders of magnitude higher than pristine crystals, enabling efficient visible emission at 644 nm for solid-state lighting. • • Dual-band CPL achieved at 644 nm (glum = ±2.1×10−2) and 994 nm (glum = ±6.8×10−3) via Sb3+/Yb3+ co-doping, marking the first NIR-CPL in lead-free OIHMHs for telecommunications and bioimaging. • • Luminescence dissymmetry factor of ±7.1×10−3 for Sb3+ emission, among the highest for chiral metal halides, critical for polarization-sensitive photonics. • • LED device using (R-DACH)2In2Br10:2.7%Sb3+ achieved color-rendering index of 78.4 with stable operation, demonstrating practical viability for display and lighting applications.