In this work, we wish to report a universal methodology for the fabrication of spin-OLEDs based on CISS effect, and highly efficient green and white spin-OLEDs are successfully prepared, providing prominent green and white CP-EL signals with outstanding EL efficiencies. Initially, chiral near-ultraviolet and deep-blue materials with wide energy gaps are explored and demonstrated to possess CISS effect. In consequence, spin-polarized charge carriers are generated from these achiral layers and get recombined to form spin-polarized excitons in adjacent achiral green layers, furnishing spin-OLEDs with green CP-EL. Unlike the current chirality-induction method for obtaining CP-EL, which involves doping achiral emitter into chiral host (or vice versa) in the same one layer, in these new spin-OLEDs, the chirality-induction effect is eliminated by separating the chiral layer and the achiral layer into two different layers. Furthermore, by incorporating multiple achiral sky-blue, green and red layers with chiral nearultraviolet or deep-blue layers, complex three-emitting-layer or four-emitting-layer spin-polarized white OLEDs (spin-WOLEDs) are obtained (Fig. ), providing distinct CP-EL signals from different achiral emitting layers and outstanding EL performance with a best external quantum efficiency of 26.6% and a highest CRI of 94 reported for circularly polarized WOLEDs to date.