Improved Efficiency of Organic/Inorganic Hybrid Near-Infrared Light Upconverter by Device Optimization

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• 作者：Xinbo Chu ; Min Guan ; Linsen Li ; Yang Zhang ; Feng Zhang ; Yiyang Li ; Zhanping Zhu ; Baoqiang Wang ; Yiping Zeng
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：September 26, 2012
• 年：2012
• 卷：4
• 期：9
• 页码：4976-4980
• 全文大小：319K
• 年卷期：v.4,no.9(September 26, 2012)
• ISSN：1944-8252

文摘

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 In_0.12Ga_0.88As/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; light%5C-emitting+diode&qsSearchArea=searchText">organic light-emitting diode; photodetector; near-infrared; MoO₃-doped PTCDA; interfacial layer