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非对称绝缘层无机EL显示器件的研究
Study on the Inorganic EL Devices with Asymmetric Insulating Layers
【摘要】 非对称绝缘层无机EL显示器件是一种新颖的器件结构。成功制备了一批ZnS:M n器件,其下介质层为厚100~200 nm的SrT iO3(ST)或Ba0.5Sr0.5T iO3(BST)或T a2O5薄膜,上介质层为厚600~1 100 nm的T a2O5或ST/T a2O5或H fO2/T a2O5/A l2O3薄膜。发现以ST/T a2O5为上介质层的器件具有适当的阈值电压、较高的L50和较陡的L-V曲线,以H fO2/T a2O5/A l2O3为上介质层的器件具有较高的可靠性。
【Abstract】 Novel EL devices with asymmetric insulating layers were prepared and the luminescent performance was investigated in this article.The lower dielectric layers were 100~200 nm thick SrTiO3(ST),Ba0.5Sr0.5TiO3(BST) or Ta2O5 thin films,and the upper dielectric layers were 600~1 100 nm thick Ta2O5,ST/Ta2O5 or HfO2/Ta2O5/Al2O3 thin films.The EL devices with ST/Ta2O5 as the upper insulating layer showed moderate threshold voltage and higher L50,while the devices with HfO2/Ta2O5/Al2O3 as the upper insulating layer exhibited higher reliability.
【Key words】 TFEL device; asymmetric insulating layer; threshold voltage; L-V curves;
- 【文献出处】 光电子技术 ,Optoelectronic Technology , 编辑部邮箱 ,2006年02期
- 【分类号】TN141
- 【被引频次】1
- 【下载频次】70