Changes in Ionization Potentials of MgO and CaO Films upon Heating in Air and Vacuum Investigated by Metastable De-excitation Spectroscopy-猫眼课题宝

亚稳态去激发光谱研究 MgO 和 CaO 薄膜在空气和真空中加热后电离势的变化

DOI：

10.1016/j.apsusc.2012.07.005

发表时间：

2012

期刊：

Applied Surface Science

影响因子：

6.7

通讯作者：

中科院分区：

材料科学1区

文献类型：

--

作者：

K. Yoshino;Y. Morita;T. Nagatomi;M. Terauchi;T. Tsujita;Y. Doi;T. Nakayama;Y. Yamauchi;M. Nishitani;M. Kitagawa;Y. Yamauchi;Y. Takai

用亚稳态去激发光谱研究了等离子体显示器制造过程中所必需的MgO和CaO薄膜表面在空气和真空中加热时电离势的变化。在真空中在500°C下加热1min对于清洁先前在空气中加热的MgO膜表面是有效的，导致清洁的MgO表面的电离电势从在空气中加热时增加的值恢复。类似的处理对CaO表面无效。这种行为上的差异可以归因于CaO上的H2O和CO2比MgO上的H2O和CO2具有更强的键合状态。这与CaO尚未实际用作等离子体显示面板中的保护层的事实一致。此外，点火电压的等离子体预测的MgO和CaO的保护层从亚稳态去激发光谱确定的电离势被发现定性地同意与测得的点火电压获得的测试面板。本研究结果证实，亚稳态去激发光谱是有效的，用于评估等离子体显示器中使用的保护层。

Changes in the ionization potential of MgO and CaO film surfaces upon heating in air and vacuum, which are necessary processes in the manufacture of plasma display panels, were investigated by metastable de-excitation spectroscopy. Heating at 500°C for 1min in vacuum is effective for cleaning an MgO film surface previously heated in air, resulting in the recovery of the ionization potential of the cleaned MgO surface from the increased value upon heating in air. A similar treatment is not effective for the CaO surface. This difference in behavior can be attributed to the stronger bonding states of H2O and CO2on CaO than those on MgO. This is consistent with the fact that CaO has not yet been practically used as a protective layer in plasma display panels. Furthermore, the firing voltages of the plasma predicted for the MgO and CaO protective layers from the ionization potentials determined by metastable de-excitation spectroscopy were found to qualitatively agree with measured firing voltages obtained for a test panel. The present results confirmed that metastable de-excitation spectroscopy is effective for evaluating protective layers used in plasma display panels.