Qingxue Zhao , Shenwei Wang , Zhengmao Wen , Weifang Zhang , Xiaoxia Duan , Lixin Yi
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引用次数: 0
Abstract
Rare-earth (RE) doped zinc oxide electroluminescence is worthy of study due to its pure and sharp luminescence characteristics. In this work, we report ZnO:Yb light-emitting diodes (LED) and test their electroluminescence properties. Through adjusting the concentration of ytterbium doping and optimizing of annealing parameters for ZnO:Yb thin films, the results show that ZnO:Yb light-emitting diodes are capable of generating intense near-infrared emission at 975 nm and 1004 nm. We contend that impact excitation is the predominant mechanism underlying the electroluminescence in ITO/PEDOT:PSS/ZnO:Yb/n-Si light-emitting diodes. These results are considered an effective strategy for rare-earth-doped semiconductor electroluminescence in near-infrared light-emitting diodes.
期刊介绍：
It is the aim of this journal to bring together in one publication outstanding papers reporting new and original work in the following areas: (1) applications of solid-state physics and technology to electronics and optoelectronics, including theory and device design; (2) optical, electrical, morphological characterization techniques and parameter extraction of devices; (3) fabrication of semiconductor devices, and also device-related materials growth, measurement and evaluation; (4) the physics and modeling of submicron and nanoscale microelectronic and optoelectronic devices, including processing, measurement, and performance evaluation; (5) applications of numerical methods to the modeling and simulation of solid-state devices and processes; and (6) nanoscale electronic and optoelectronic devices, photovoltaics, sensors, and MEMS based on semiconductor and alternative electronic materials; (7) synthesis and electrooptical properties of materials for novel devices.
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