Urgent Need for a High Speed, Highly Sensitive Near-Infrared Photodetection System

迫切需要高速、高灵敏度的近红外光电探测系统

• 批准号: 458583-2014
• 负责人: Shankar, Karthik
• 金额: $ 4.86万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541977
• 关键词: Urgent; Need; Speed; Highly; Sensitive

We urgently require a highly sensitive near-infrared photodetection system to perform the steady-state and time-resolved measurement of photo- and electroluminescence in the spectral region of 900-1700 nm in order to probe 1) Charge Transfer (CT) excitons in bulk heterojunction organic solar cells 2) Low temperature photoluminescence of near-IR emitting colloidal quantum dots 3) Single molecule sensing immunoassays and 4) Quantum Yield and Lifetime of near-IR triplet emitters. There is currently not a single such near-infrared photodetection system available anywhere at the UofA or at NRC-NINT or anywhere in the province of Alberta. The absence of an instrument to measure faint photo- and electroluminescence in the spectral region of 900-1700 nm is limiting progress on a number of research projects in nanomaterials, organic electronics and photonic devices. The commonly used cooled Germanium based detectors are severely limited in both speed and sensitivity. Cutting edge work in the above fields demands the million-fold noiseless internal gain of near infrared photomultiplier tubes (PMTs), that possess spectral sensitivity up to 1700 nm while retaining a response time under 2 ns.

我们紧急需要一个高度敏感的近红外光接触系统，以在900-1700 nm的光谱区域对光 - 和电发光的稳态和时间分辨测量进行探测1探测1次电荷转移（CT）激发子（CT）激素转移（CT）激素传递（CT）近距离量化有机溶液中的单个型号量化有机溶剂2）免疫测定和4）近红外三胞胎发射器的量子产率和寿命。 目前，在UOFA或NRC-NINT或艾伯塔省的任何地方，都没有这样的近红外光电检测系统。 缺乏测量900-1700 nm光谱区域中微弱光子和电致发光的仪器，这限制了纳米材料，有机电子和光子设备的许多研究项目的进展。 常用的冷却锗探测器的速度和灵敏度都受到严重限制。 上述领域的尖端工作要求具有近红外光电型管（PMTS）的无噪声内部增益，该增益具有高达1700 nm的光谱灵敏度，同时保留了2 ns的响应时间。