Next-Generation High-Speed Sensors for 3D Imaging Applications

适用于 3D 成像应用的下一代高速传感器

• 批准号: RTI-2021-00488
• 负责人: Sargent, Edward
• 金额: $ 10.93万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718503
• 关键词: Next; Generation; Speed; Sensors; 3D

The focus of this proposal is to pursue the realization of high-frequency optoelectronic devices for light detection and ranging (LiDAR) systems. LiDAR technology is of importance for aided- and self-driving cars as well as for consumer electronic applications such as smartphones and headsets to enable augmented and virtual reality. Fast and sensitive photodetection is crucial to enable high resolution, accuracy, and detection range. We have recently developed solution-processed ultrafast photodetectors using metal halide perovskites. These outperform existing silicon solution in sensitivity speed. We have also developed colloidal quantum dot photodetectors that extend the sensitivity into the infrared (>1300 nm). This is desired in LiDAR systems to improve eye-safety and improve sensitivity by drastically reducing the limiting background noise from sunlight. The response time of the new photodetectors is faster than 60 ps per pulse, a finding obtained using a loaned 16 GHz oscilloscope. Now we must construct a 3D imaging LiDAR prototype to enable a direct comparison with existing technologies. The lack of a high-frequency oscilloscope in our group is right now precluding further progress. High-frequency characterization is critical to assess the time response of our detectors with the needed resolution to assess rise and fall times as well as ringing effects. These will provide further insights into device and materials limitations and feedback for subsequent steps. Beyond the above, the proposed equipment will help to advance other research programs within our optoelectronic programs. The equipment will provide advanced high-quality training for the next generation of Canadian researchers. We anticipate this equipment will be heavily used by over 90 trainees in the first five years.

该提案的重点是实现用于光探测和测距（LiDAR）系统的高频光电器件。激光雷达技术对于辅助驾驶和自动驾驶汽车以及智能手机和耳机等消费电子应用来说非常重要，以实现增强现实和虚拟现实。 快速、灵敏的光电检测对于实现高分辨率、准确性和检测范围至关重要。我们最近开发了使用金属卤化物钙钛矿的溶液处理超快光电探测器。它们在灵敏度速度方面优于现有的硅解决方案。我们还开发了胶体量子点光电探测器，将灵敏度扩展到红外线（>1300 nm）。这是激光雷达系统所希望的，通过大幅减少来自阳光的限制性背景噪声来提高眼睛安全性并提高灵敏度。 新型光电探测器的响应时间快于每脉冲 60 ps，这是使用借来的 16 GHz 示波器获得的结果。现在我们必须构建一个 3D 成像 LiDAR 原型，以便与现有技术进行直接比较。 我们小组目前缺乏高频示波器，阻碍了进一步的进展。高频表征对于评估探测器的时间响应至关重要，并具有评估上升和下降时间以及振铃效应所需的分辨率。这些将为后续步骤提供对设备和材料限制以及反馈的进一步见解。除此之外，拟议的设备将有助于推进我们光电项目中的其他研究项目。 该设备将为下一代加拿大研究人员提供先进的高质量培训。我们预计该设备将在头五年内被 90 多名学员大量使用。