在偏差电压下,基光探测器的光倍增行为
Yuting Sun1, Jian Jiang1, Tian-Fu Xiang1
1Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China.
The journal of physical chemistry letters
|November 15, 2023
概括
研究人员使用叶绿素衍生物开发了有机光探测器,通过光乘法实现了高外部量子效率. 这一突破为增强光探测器响应能力提供了一种有希望的方法.
科学领域:
- 有机电子学有机电子学
- 光电探测器技术的技术.
- 叶绿素的衍生物 叶绿素的衍生物
背景情况:
- 光探测器 (PD) 是重要的电子元件.
- 提高PD响应度是一个持续的研究挑战.
- 叶绿素衍生物为新的光电子应用提供了潜力.
研究的目的:
- 使用特定的叶绿素衍生物制造和表征光探测器.
- 为了研究这些设备中的光倍增 (PM) 现象.
- 评估开发的有机PDs的响应能力.
主要方法:
- 采用甲基3-维尼尔-3-基甲基-铁甲基-a (ZnChl) 和甲基13-1-deoxo-13-1-dicyanomethylene-pyropheophorbide-a (H-2-Chl) 的光电探测器的制造,采用两步滴涂工艺.
- 在不同的偏差条件下测量外部量子效率和响应能力.
- 对观察到的光倍增现象的基本机制的分析.
主要成果:
- 基于ZnChl/H2Chl的PD显示出最大的外部量子效率为1363%在-8V和1345%在2.5V.
- 观察到光倍增现象,并将其归因于由电子积累协助的孔道注入.
- 实现了高响应性, -8 V 的值为 7706 mA/W,2.5 V 的值为 7629 mA/W,在前置偏差下更容易实现.
结论:
- 基于ZnChl/H2Chl'的有机光探测器表现出显著的光倍增行为.
- 这项研究为改善光探测器响应度提供了一个有希望的方法.
- 这些发现凸显了基衍生物在先进光探测器应用中的潜力.
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