通过器件优化提高有机/无机杂化近红外上转换发光效率。

Improved efficiency of organic/inorganic hybrid near-infrared light upconverter by device optimization.

机构信息

Material Science Center, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing, 100083, People's Republic of China.

出版信息

ACS Appl Mater Interfaces. 2012 Sep 26;4(9):4976-80. doi: 10.1021/am301340p. Epub 2012 Sep 6.

DOI:10.1021/am301340p

PMID:22931090

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.

摘要

本工作演示了一种有机/无机混合上转换器件，它可以将近红外光（NIR）高效地转换为可见绿光。该上转换器是通过将 In(0.12)Ga(0.88)As/GaAs 多量子阱（MQWs）光电探测器（PD）与有机发光二极管（OLED）集成而制造的。通过优化 PD 单元的结构并添加 MoO(3)掺杂苝-3,4,9,10-四羧酸二酐（PTCDA）作为 OLED 的界面层，在室温下，在 NIR 照射为 1 mW/mm(2)、外加 20 V 的条件下，获得了 4.0 W/W %的上转换效率。同时，NIR 诱导的绿光输出达到 6050 cd/m(2)，这证明了有机/无机混合上转换器是一种可以应用于光转换领域的优秀候选器件。