An organic/inorganic hybrid up-conversion device was demonstrated in this work, which can convert near-infrared light (NIR) to visible green at high conversion efficiency. The upconverter was fabricated by integrating an In0.12Ga0.88As/GaAs multiquantum wells (MQWs) photodetector (PD) with an organic light emitting diode (OLED). The up-conversion efficiency of 4.0 W/W % was obtained at 20 V under NIR illumination of 1mW/mm2 at room temperature by optimizing the structure of the PD unit and adding MoO3 doped perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) as interfacial layer of OLED. Meanwhile, the green light output induced by NIR achieved 6050 cd/m2, which proves that the organic/inorganic hybrid upconverter an excellent candidate that can be applied in light converter field.Keywords: hybrid up-conversion device; interfacial layer; MoO3-doped PTCDA; near-infrared; organic light-emitting diode; photodetector;

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/mm2.Graphical abstractSchematic diagram of up conversion device.Highlights► We designed and fabricated the organic-inorganic hybrid light up-conversion devices. ► Up-convertor is composed of an OLED and In0.2Ga0.8As MQWS photodetector. ► We examine three different interface layers for upconversion device performance. ► That the appropriate interface layer is crucial for the up conversion device.