TY - JOUR
T1 - A new approach to design light emitting devices using electroactive dyes
AU - Pan, Michael
AU - Patra, Amitava
AU - Friend, Christopher S.
AU - Lin, Tzu Chau
AU - Cartwright, Alexander N.
AU - Prasad, N. Paras
AU - Burzynski, Ryszard
PY - 2003
Y1 - 2003
N2 - Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m2 at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.
AB - Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m2 at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.
UR - http://www.scopus.com/inward/record.url?scp=0038649949&partnerID=8YFLogxK
M3 - 會議論文
AN - SCOPUS:0038649949
SN - 0272-9172
VL - 734
SP - 273
EP - 278
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
T2 - Polymer/Metal Interfaces and Defect Mediated Phenomena in Ordered Polymers
Y2 - 2 December 2002 through 6 December 2002
ER -