用于成像应用的接口工程有机近红外光探测器
Abu Bakar Siddik1,2, Epimitheas Georgitzikis1, Yannick Hermans1
1IMEC, Kapeldreef 75, 3001 Leuven, Belgium.
ACS applied materials & interfaces
|June 16, 2023
概括
我们开发了一种高速近红外有机光电探测器 (OPD),使用无形的氧化和氧化显著减少了暗电流. 这一进步使得高质量的成像应用成为可能.
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.
- 半导体物理 半导体物理
背景情况:
- 有机光电探测器 (OPD) 对于近红外 (NIR) 成像至关重要.
- 在OPD中实现低暗电流和高速度仍然是一个挑战.
- 了解暗流机制是设备优化的关键.
研究的目的:
- 开发一个高速,低暗电流的NIR有机光电探测器 (OPD).
- 阐明OPD中占主导地位的暗电流机制.
- 为了证明改进的OPD在成像应用中的潜力.
主要方法:
- 在基板上制造OPD,使用无形的氧化 (a-IGZO) 作为电子输送层 (ETL).
- 使用温度依赖的电流电压测量,Q-DLTS,短暂光伏衰变和紫外线光电谱学进行表征.
- 引入一个界面层来减轻暗电流.
主要成果:
- 确定了陷辅助的场增强热辐射 (普尔-弗伦克尔辐射) 作为主要的暗电流机制.
- 通过引入接口层,在-1V反向偏向下显著减少了125 pA/cm2的暗电流.
- 获得的快速照片响应时间为639 ns (上升) 和1497 ns (下降).
结论:
- 开发的接口层有效地抑制了NIR OPD中的暗电流.
- 高速,低暗电流的OPD适用于先进的成像系统.
- 与CMOS读出电路的集成证明了对高质量的成像的实际应用.
相关概念视频
Infrared (IR) Spectroscopy: Overview
1.9K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
1.9K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
412
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
412


