NER: Novel Electrochemically Self Assembled Nanowire Infrared Photodetectors

NER：新型电化学自组装纳米线红外光电探测器

• 批准号: 0206950
• 负责人: Supriyo Bandyopadhyay
• 金额: $ 8.85万
• 依托单位: Virginia Commonwealth University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-15 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206950&HistoricalAwards=false
• 关键词: NER; Novel; Electrochemically; Self; Assembled

This research is focused on demonstrating novel ROOM TEMPERATUREinfrared photodetectors based on electrochemically self assembled nanowirearrays. Photodetection is based on photoexcitation of electrons fromsubband states in the nanowire to trap states in the surroundinginsulator. This leads to an "inverse" photodetection effect whereby the conductivity of the photodetector drops when irradiated with infrared radiation.Preliminary experiments [Appl. Phys. Lett., Vol. 79, 4423 (2001)] haveshown that these photodetectors can operate at room temperature with asignal to noise ratio of 45 dB. The purpose of the NER project willbe to extend this result to create (1) multi-colored detectors usingdifferent sized nanowires self assembled on the same wafer, and (2) acomplementary photodetector where a normal photodetector is synthesizedin series with an inverse photodetector. The complementary photodetectorwill be able to detect a very narrow band.This research will involve significant work by undergraduate students.The samples that exhibited the novel photodetection effect wereprepared by an undergraduate student in the PI's lab.

这项研究的重点是证明基于电化学自组装的纳米级的新型室温光电探测器。光检测基于纳米线中的电子的光激发，到周围的供应器中的陷阱状态。这导致了“反向”光检测效应，当用红外辐射照射时，光电探测器的电导率会降低。初步实验[appl。物理。 Lett。，卷。 79，4423（2001）]众所周知，这些光电检测器可以在室温下运行，而噪声比为45 dB。 NER项目的目的将扩展此结果以创建（1）使用不同尺寸的纳米线形成的多色检测器自组装在同一晶片上，以及（2）Actermentary PhotodeTector，其中正常光电探测器与逆光电量合成蛋白系列。互补的光电探测器将能够检测到非常狭窄的频段。这项研究将涉及本科生的重要工作。在Pi's Lab中，一名本科生为表现出新型的光相检测效果的样本做好了准备。