title: Improved efficiency of organic/inorganic hybrid near-infrared light upconverter by device optimization.
abstract: 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(0.12)Ga(0.88)As/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 1 mW/mm(2) at room temperature by optimizing the structure of the PD unit and adding MoO(3) 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/m(2), which proves that the organic/inorganic hybrid upconverter an excellent candidate that can be applied in light converter field.
authors.affiliation: Material Science Center, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing, 100083, People's Republic of China.
authors.forename: Xinbo
authors.initials: X
authors.lastname: Chu
authors.forename: Min
authors.initials: M
authors.lastname: Guan
authors.forename: Linsen
authors.initials: L
authors.lastname: Li
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Yiyang
authors.initials: Y
authors.lastname: Li
authors.forename: Zhanping
authors.initials: Z
authors.lastname: Zhu
authors.forename: Baoqiang
authors.initials: B
authors.lastname: Wang
authors.forename: Yiping
authors.initials: Y
authors.lastname: Zeng