在AgTS/SAM//Ga2O3/EGaIn连接处进行双极诱导的校正
Mostafa Baghbanzadeh1, Lee Belding1, Li Yuan1
1Department of Chemistry and Chemical Biology , Harvard University , 12 Oxford Street , Cambridge , Massachusetts 02138 , United States.
Journal of the American Chemical Society
|May 11, 2019
概括
分子结构影响自组装单层 (SAM) 中的道电流整流. 来自胺,尿素和硫尿素组的局部二极体会引起界面效应,导致EGaIn连接处的显著电流纠正.
科学领域:
- 材料科学
- 分子电子
- 表面化学
背景情况:
- 自组装单层 (SAM) 对分子电子非常重要.
- 道电流纠正是分子结合的一个关键现象.
- 了解分子结构和电子特性之间的关系至关重要.
研究的目的:
- 调查SAM中的分子二极管如何影响道电流整顿.
- 将分子结构与观察到的Ag/SAM/EGaIn结合中的整合相关联.
- 阐明负责电流纠正的接口机制.
主要方法:
- 使用AgTS/S(CH2) nR(CH2) mCH3//Ga2O3/EGaIn结构进行道结道的制造.
- 将胺基,尿素和硫尿素的功能组 (R) 纳入SAM中.
- 在 ±1.0 V 时测量和分析道电流整流 (r+).
主要成果:
- 通过氨基酸,尿素和硫尿酸组引入局部电偶极.
- 观察到统计学上显著的电流纠正 (高达r+ ≈20).
- 这种纠正被认为是一种界面效应,而不是屏障宽度或高度的变化.
结论:
- 在SAM中分子二极管显著影响道电流整流.
- 观察到的纠正主要是由于工作功能的变化而产生的界面效应.
- 这项研究提供了设计具有可调节性质的分子电子设备的见解.
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