TY - JOUR
T1 - High-efficiency polymer light-emitting diode via Al interfacial modification using polyurethane
AU - Hsieh, Sung Nien
AU - Kuo, Tzu Yin
AU - Wen, Ten Chin
AU - Guo, Tzung Fang
AU - Lee, Yuh Lang
PY - 2006/8/11
Y1 - 2006/8/11
N2 - An efficient polymer light-emitting diode (PLED) was fabricated by inserting polyurethane (PU) between a poly(2-methoxy-5-(2′-ethylhexyloxy)- 1,4-phenylene vinylene) layer and an Al cathode. The electroluminescence (EL) efficiency of the PU-based device can reach 1.27 cd/A, which is much higher than that of a device without PU (0.015 cd/A). The enhanced performance is attributed to both the hole-blocking capacity of the PU layer and the specific interaction between PU and the deposited Al, significantly facilitating the injection of electrons. Furthermore, the electron injection ability of PU-based devices was found to strongly depend on the thicknesses of the PU and Al layers.
AB - An efficient polymer light-emitting diode (PLED) was fabricated by inserting polyurethane (PU) between a poly(2-methoxy-5-(2′-ethylhexyloxy)- 1,4-phenylene vinylene) layer and an Al cathode. The electroluminescence (EL) efficiency of the PU-based device can reach 1.27 cd/A, which is much higher than that of a device without PU (0.015 cd/A). The enhanced performance is attributed to both the hole-blocking capacity of the PU layer and the specific interaction between PU and the deposited Al, significantly facilitating the injection of electrons. Furthermore, the electron injection ability of PU-based devices was found to strongly depend on the thicknesses of the PU and Al layers.
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U2 - 10.1143/JJAP.45.L773
DO - 10.1143/JJAP.45.L773
M3 - Article
AN - SCOPUS:34548590098
SN - 0021-4922
VL - 45
SP - L773-L776
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 29-32
ER -