Efficient white light emission in conjugated polymer homojunctions.

Autor: Guey-Kai Ho, Hsin-Fei Meng, Shi-Chang Lin, Sheng-Fu Horng, Chain-Shu Hsu, Lai-Cheng Chen, Shu-Mei Chang
Předmět:
Zdroj: Applied Physics Letters; 11/15/2004, Vol. 85 Issue 20, p4576-4578, 3p, 1 Diagram, 1 Chart, 3 Graphs
Abstrakt: We study polymer light-emitting diodes with a homojunction, i.e., junction between two layers with the same host material. One layer is poly (9,9-dioctylfluorene-2,7-diyl) (PFO) host blended with a small amount of poly (2-methoxy-5 (2'-ethyl-hexyloxy)-1,4-phenylene vinylene), another layer is either pure PFO or PFO host blended with green-emitting polyfluorene copolymers. Such homojunction devices are solution processed and show efficient white light emission. The peak luminance 3000 cd/m² is reached at 10 V with Internationale de L'Eelairage (CIE) coordinate (0.34, 0.34). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index