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Inverted structural quantum dot light-emitting diodes based on Al-doped ZnO electrode
Tang, Z. B.; J. Lin; L. S. Wang; J. S. Luo; J. L. Zhao; H. B. Li; Y. J. Wang and X. Y. Liu
2017
发表期刊Nanotechnology
卷号28期号:36
摘要As an indium-free transparent conducting film, Al-doped zinc oxide (AZO) was prepared by magnetron sputtering technique, exhibiting good electrical, optical and surface characteristics. UPS/XPS measurements show that AZO and zinc oxide nanoparticles (ZnO NPs) have matched energy level that can facilitate the electron injection from AZO to ZnO NPs. Inverted structural green quantum dot light-emitting diodes based on AZO cathode were fabricated, which exhibits a maximum luminance up to 178 000 cd m(-2), and a maximum current efficiency of 10.1 cd A(-1). Therewith, combined with the simulated space-charge-limited current (SCLC) theory, the measured current density-voltage characteristics of charge-only devices were analyzed. It demonstrated that AZO and ZnO NPs had much better electron injection efficiency than ITO, showing a electron injection efficiency close to 100%. By studying the relationship between the electric field and the current density, the measured curve of AZO-based devices nearly fits the theoretical curve of SCLC and the AZO electrode has a better ohmic contact with ZnO NPs than ITO.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59214
专题中科院长春光机所知识产出
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Tang, Z. B.,J. Lin,L. S. Wang,et al. Inverted structural quantum dot light-emitting diodes based on Al-doped ZnO electrode[J]. Nanotechnology,2017,28(36).
APA Tang, Z. B..,J. Lin.,L. S. Wang.,J. S. Luo.,J. L. Zhao.,...&Y. J. Wang and X. Y. Liu.(2017).Inverted structural quantum dot light-emitting diodes based on Al-doped ZnO electrode.Nanotechnology,28(36).
MLA Tang, Z. B.,et al."Inverted structural quantum dot light-emitting diodes based on Al-doped ZnO electrode".Nanotechnology 28.36(2017).
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