基于NPB给体的有机紫外探测器的研究

发布时间：2018-04-13 08:48

本文选题：NPB + 异质结　；参考：《吉林大学》2015年硕士论文

【摘要】：紫外光探测技术已经广泛应用于国防、天体物理分析、恒星观测、环境监测、火灾探测、火焰传感、可燃气体分析、矿产勘探和开采、医疗卫生和生物工程等领域。在军事科学方面，紫外光探测技术也有广泛的应用，包括导弹预警，导弹制导，紫外通信等，它具有误报率低，抗干扰性高，隐蔽性好，全天候工作，传播特性良好等特点。然而，传统的无机紫外探测器的制备工艺复杂、成本高以及大规模生产困难等特点限制了其进一步发展。由于有机半导体材料具备低廉的价格、简易的制备方法、大规模的薄膜生长等优点，因而近年来有机紫外探测器的研究得到了国内外学者的普遍关注。基于以上背景，本论文主要针对NPB这种优良的电子给体材料来探究其在有机紫外探测领域的应用。我们分别选取了BCP和C60两种电子受体材料，以ITO/石英玻璃作为衬底来制备近紫外光探测器。首先，我们制作了结构为Glass/ITO/NPB/BCP/Al的“可见盲型”有机紫外探测器。我们对器件的工艺流程做了简单介绍，并且对有源层厚度进行了厚度优化。对器件进行了J-V特性、光响应度等参数测试。最终得到了紫外-可见抑制比高达509的有机紫外光探测器件。其次，为了提高器件的光响应度，我们在NPB与BCP之间引入一层高电子迁移率的C60有机受体材料。同时也对器件进行各项参数测试以及有源层厚度优化。最终制得的器件在反向5V的偏压，350nm紫外光辐射的照射下，器件的响应度高达315mA W-1。
[Abstract]:UV detection technology has been widely used in defense, astrophysical analysis, star observation, environmental monitoring, fire detection, flame sensing, flammable gas analysis, mineral exploration and mining, medical and health, biological engineering and so on.In military science, ultraviolet detection technology also has a wide range of applications, including missile warning, missile guidance, ultraviolet communication, etc., it has the characteristics of low false alarm rate, high anti-interference, good concealment, all-weather work, good propagation characteristics, and so on.However, the development of traditional inorganic UV detectors is limited by their complex preparation process, high cost and difficulty in mass production.Due to the advantages of organic semiconductor materials such as low price, simple preparation method and large scale thin film growth, the research of organic ultraviolet detectors has been widely concerned by domestic and foreign scholars in recent years.Based on the above background, this paper focuses on the application of NPB, an excellent electron donor, in the field of organic UV detection.Two kinds of electron acceptor materials, BCP and C60, were selected to fabricate near-ultraviolet photodetectors on ITO/ quartz glass substrate.First, we have fabricated a "visible blind" organic UV detector with a structure of Glass/ITO/NPB/BCP/Al.We briefly introduce the process of the device and optimize the thickness of the active layer.The J-V characteristics and optical responsivity of the device were measured.Finally, an organic UV detector with a UV-VCR up to 509 was obtained.Secondly, in order to improve the photoresponse of the device, we introduce a layer of C60 organic receptor material with high electron mobility between NPB and BCP.At the same time, the parameters of the device are tested and the thickness of the active layer is optimized.The responsivity of the device is as high as 315mA W-1 under the irradiation of reverse 5V bias voltage of 350 nm ultraviolet light.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN23

【共引文献】