Organic light-emitting diodes with integrated inorganic photo detector for near-infrared optical up-conversion
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چکیده
We report a hybrid up-conversion device integrating a In0.2Ga0.8As/GaAs MQWs photodetector with an organic light emitting diode (OLED), that converts input 980 nm infrared light to output 520 nm green light. Devices with different interface layer, used as the hole injection layer (HIL) in OLEDs were fabricated and tested. It was found that the device with an HIL of MoO3-doped CuPc exhibited a lowest turn-on voltage of 2.6 V. The maximum external up conversion efficiency of 0.81 W/W% is achieved at the bias of 20 V under an input 980 nm NIR power density of 1 mW/mm. 2011 Elsevier B.V. All rights reserved.
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تاریخ انتشار 2011