Fig. 4From: Liquid Type Nontoxic Photoluminescent Nanomaterials for High Color Quality White-Light-Emitting DiodePL spectra of (a) liquid-type graphene QD at a CCT of 5600 K and liquid-type GQD/ P-Si QD white LED at a CCT of 3900 K. b Dispensing graphene QD and graphene/P-Si QD white LEDs. c The LIV curve spectrum of the nontoxic w-LEDs driven at 1–300 mA. d CRI spectra for GQD + P-Si dispensing and liquid-type LEDs driven at 1–300 mABack to article page