薄膜固态电解发光器件基于三2,2'-二二) (II) 复合物
Mihai Buda1, Gregory Kalyuzhny, Allen J Bard
1Department of Chemistry and Biochemistry and Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, 78712, USA.
Journal of the American Chemical Society
|May 23, 2002
概括
反类型显著影响发光电化学电池 (LEC) 响应时间. 阴离子的移动性受到水分的影响,会影响这些设备中的短暂行为和电荷传输.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 光电学是指光电子产品.
背景情况:
- 发光电化学电池 (LEC) 提供了低成本照明的潜力.
- 了解电荷运输动态对于优化LEC性能至关重要.
- 二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二
研究的目的:
- 调查 counterions 对 LEC 行为的影响.
- 确定大气湿度对阳离子流动性的作用.
- 开发一种电化学模型来解释观察到的现象.
主要方法:
- 使用三2,2'-二二) 二) 薄膜制造具有 ITO 阳极和 Ga-In 阴极的 LEC.
- 在手套箱和环境条件下对电池进行比较测试.
- 电化学建模和模拟电流和光辐射的瞬态.
主要成果:
- 小离子 (BF(4) ((-),ClO(4) ((-)) 与大离子 (PF(6) ((-),AsF(6) ((-)) 相比,导致细胞反应时间更快.
- 固体薄膜中的阳离子流动性与微量水有关.
- 实验数据与模拟结果密切匹配,表明电荷注入不对称.
- 电子传输在低偏差时占主导地位,而双极传导在高偏差时发生.
结论:
- 体的大小和移动性是控制LEC短暂反应的关键因素.
- 大气中的水分在LEC膜内的离子运输中起着重要作用.
- 拟议的电化学模型准确地描述了LEC的行为,包括不对称的电荷注入和偏差依赖的载体传输.
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