Photobiologically Safe High Color Rendering Index White Organic Light-Emitting Devices Zhang, Wei ; Wen, Xuemei ; Yu, Jing ; Liu, Wenbo ; Xie, Wenfa ; Zhang, Letian Abstract Publication: IEEE Photonics Technology Letters Pub Date: September 2014 DOI: 10.1109/LPT.2014.2326854 Bibcode: 2014IPTL...26.1691Z