Bright hybrid white light-emitting quantum dot device with direct charge injection into quantum dot

Cao Jin^{2, †,}, Xie Jing-Wei¹, Wei Xiang², Zhou Jie², Chen Chao-Ping³, Wang Zi-Xing², Jhun Chulgyu⁴

Normalized EL spectra at an applied voltage of 9 V for (a) devices-G with the green-QD thickness values of 0.4, 0.8, 1.2, and 2 ML for the devices G1, G2, G3, and G4, respectively, and (b) devices R with the red-QD thickness values of 1, 1.2, 1.4, and 2 ML for the devices R1, R2, R3, and R4, respectively. The L–V–J characteristics of (c) devices-G, and (d) devices-R. The insets in panels (a) and (b) show the structures of devices-G and devices-R, respectively.