具有高达1.3微米的光谱响应的敏感有机光电探测器,使用状分子半导体
Bingyan Yin1, Xia Zhou1,2, Yuyang Li3
1Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 15, 2024
概括
研究人员开发了高灵敏度的有机光电探测器 (OPD),用于检测短波长红外 (SWIR) 光,直至1.3微米. 这些新的SWIR-OPD克服了以前的局限性,为先进的技术应用提供了前所未有的外部量子效率和检测能力.
科学领域:
- 有机电子学有机电子学
- 光子学和光电子学.
- 材料科学 是一种材料科学.
背景情况:
- 短波红外 (SWIR) 光检测对于新兴技术至关重要.
- 在SWIR区域的有机光电探测器 (OPD) 受到低外部量子效率 (EQE) 和高暗电流的影响.
- 现有的技术在SWIR应用中面临着灵敏度和检测范围的限制.
研究的目的:
- 开发高灵敏度的SWIR-OPD,其高效的光电反应延伸到1.3微米.
- 为了克服当前SWIR有机光电探测器的局限性.
- 展示新型分子半导体在先进的SWIR检测方面的潜力.
主要方法:
- 合成了一种新的超低频段间隙分子半导体,配备了状三环电子缺少的中央单元和非共价形态锁.
- 使用新型半导体制造和描述SWIR-OPD.
- 性能评估包括EQE,暗电流和检测能力 (D*).
- 使用光电测试仪,光谱仪原型和图像捕捉来证明设备的适用性.
主要成果:
- 在1.10μm时实现了26% (零偏差) 和高达41% (-4V偏差) 的前所未有的EQE.
- 证明检测能力 (D*sh) 超过10^13斯在0.50~1.21μm和>10^12斯在1.30μm (零偏差).
- 由于活性层中的低能量的混乱和陷密度,显著抑制了暗电流.
- 成功验证了设备在光谱学,光谱学和成像应用中的性能.
结论:
- 开发的SWIR-OPD显示出卓越的性能,超过了光探测器的检测极限.
- 这种新型的超低频段间隙分子半导体对于高效的SWIR光检测非常有效.
- 这些高性能SWIR-OPD为超越极限的各种技术应用提供了显著的进步.
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