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相关概念视频

Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...

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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
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协同的两步被动化使得缺陷被抑制的反向PbS光探测器能够用于高检测能力的短波红外传感.

Zeyao Han1, Xiao Liu1, ZiQi Lu1

  • 1State Key Lab Flexible Elect LoFE, Institute of Advanced Materials (IAM), School of Material Science and Engineering, Nanjing University of Posts and Telecommunication (NJUPT), Nanjing 210023, PR China.

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概括

使用硫化环状量子点 (PbS CQD) 开发了高性能反向短波红外 (SWIR) 光探测器. 这些探测器实现了高量子效率和快速响应,从而实现了实际的SWIR传感应用.

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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.
  • 纳米技术纳米技术

背景情况:

  • 短波红外 (SWIR) 检测对于自动驾驶和生物传感等应用至关重要.
  • 硫化环状量子点 (PbS CQD) 为光电子提供可调节的带隙和解决方案可处理性.
  • 倒置SWIR光探测器对于集成至关重要,但在量子效率方面面临挑战.

研究的目的:

  • 开发使用PbS CQDs的高性能倒置SWIR光探测器.
  • 为了提高PbS CQD光探测器中的量子效率和载体运输.
  • 为了证明这些探测器在实际SWIR传感方面的潜力.

主要方法:

  • 一个结构为ITO/NiOx/PbS-EDT/PbS-I−/ZnO/Al. 的反转光探测器的制造.
  • 实施PbS CQDs的两步被动化过程.
  • 设备性能的表征,包括量子效率,检测能力和响应时间.

主要成果:

  • 在设备中实现了光滑的带对齐和高效的载体运输.
  • 通过被动化获得大规模,低缺陷的PbS CQD.
  • 在1350nm时证明了超过40%的量子效率.
  • 获得了1.05 × 1013 斯的特定检测度和470 微秒的响应时间.

结论:

  • 开发的反向PbS CQD光检测器显示了SWIR传感的出色性能.
  • 高量子效率和快速响应满足了高分辨率和高速应用的要求.
  • 在SWIR成像和火灾检测中进行的概念验证演示证实了其实际应用.