High color rendering index white organic light-emitting diode using levofloxacin as blue emitter*
Miao Yan-Qina),c), Gao Zhi-Xiangb), Zhang Ai-Qina),c), Li Yuan-Haoa),c), Wang Huaa),c)†, Jia Hu-Shenga),d)‡, Liu Xu-Guanga),e), Tsuboi Taijuff)
       
(a) EL spectra of Device series-A ( x = 1.0) at various voltages; (b) the luminance–voltage ( L – V ) characteristics of the Devices series-A.