一种绝缘耐火氧化物的光诱导转化为一种持久电子导体
Katsuro Hayashi1, Satoru Matsuishi, Toshio Kamiya
1Transparent Electro-Active Materials Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation, KSP C-1232, 3-2-1 Sakado, Tatatsu-ku, Kawasaki 213-0012, Japan. k-hayashi@net.ksp.or.jp
Nature
|October 9, 2002
概括
研究人员利用和紫外线将透明的绝缘氧化物转化为电导体. 这一突破使得光学写作在透明材料中的导电路径,用于先进的光电子应用.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 固态物理 固态物理
背景情况:
- 在材料中实现电导率和光学透明度都是具有挑战性的.
- 像离子兴奋剂这样的现有方法对于丰富的主要组金属氧化物是无效的.
- 透明导电氧化物对于新兴的光电子设备至关重要.
研究的目的:
- 开发一种方法,将透明的绝缘主要组金属氧化物转化为电导体.
- 探索在透明材料中光学写作导电特征的潜力.
- 研究光学内存和电路的新型应用.
主要方法:
- 在气大气中通过热处理将H(-) 离子纳入12CaO x 7Al(2) O(3) 氧化物中.
- 使用紫外线 (UV) 光对材料进行光激活,以诱导持久导电状态.
- 修改材料的电导率和光学透明度的表征.
主要成果:
- 成功地将透明的绝缘氧化物12CaO x 7Al(2)O(3) 转化为电导体.
- 达到中等电导率 (大约. 在室温下为0.3 S cm(-1)) .
- 显示最小可见光吸收 (1%的200纳米薄膜),保持光学透明度.
- 在紫外线辐射停止后,诱导导电状态仍然存在.
结论:
- 开发的方法为在透明的绝缘氧化物中创建导电通道提供了一条新的途径.
- 这种技术有望在透明介质中直接光学写导电线.
- 潜在的应用包括高密度光学内存和先进的光电子电路.
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