Pure white hybrid light-emitting device with color rendering index higher than 90.
The realization of white-light sources with a combination of high color rendering index (CRI), which is the average of the first eight rendering indices, and the deep-red color rendering R9 is an important challenge in the field of solid-state lighting. Herein, we report on a pure white hybrid light-emitting device combining a deep-blue emission from a polymer with blue, green, and red emissions from ternary CdSe/ZnS quantum dots. By carefully designing the device structure and tuning the ratio of QDs with different sizes, high CRI of 94 and R9 of 92 at 525 cd/m(2) were achieved.
Cheng
Gang
G
National Nanotechnology Laboratory (NNL), CNR-INFM, Università del Salento, Via per Arnesano, Km 5, 73100 Lecce, Italy. gang.cheng@unile.it
Mazzeo
Marco
M
D'Agostino
Stefania
S
Della Sala
Fabio
F
Carallo
Sonia
S
Gigli
Giuseppe
G