TY - JOUR
KW - Emission
AU - Deang Liu
AU - Michael Fina
AU - Zhaoyang Chen
AU - Xiaobo Chen
AU - Gao Liu
AU - Steven Johnson
AU - Samuel S Mao
AB - Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)/poly(2-methoxy-5-[(2'-ethylhexyl)oxy]-p-phenylenevinylene)/Al . The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring. 
BT - Applied Physics Letters
C3 - liu group
DA - 08/2007
LA - eng
M1 - 9
N2 - Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)/poly(2-methoxy-5-[(2'-ethylhexyl)oxy]-p-phenylenevinylene)/Al . The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring. 
PY - 2007
SP - 093514
EP - 3
T2 - Applied Physics Letters
TI - Organic light-emitting diodes with structured cathode
VL - 91
ER -