酞菁氧钛纳米材料的制备及其光电性质研究

发布时间：2018-05-13 05:42

本文选题：酞菁氧钛 + 纳米材料　；参考：《云南大学》2016年硕士论文

【摘要】：酞菁氧钛(TiOPc)是一种优异的有机半导体材料,它的分子结构与其他平面结构的金属酞菁分子不同,是一种含有十八个π电子的大杂环非平面结构。酞菁氧钛的载流子产生率高,在近红外有很强的吸收,使得它在有机光伏器件、有机场效应晶体管、有机发光二极管、非线性光子设备和复印/激光打印技术等领域具有广泛的应用。本文的研究工作主要包括以下几点：本论文采用有机气相沉积法通过控制原材料的加热温度,温度梯度,腔体压强,气体流量,保温时间,衬底温度等有机气相沉积实验参数制备出酞菁氧钛纳米材料。通过傅里叶变换红外光谱分析(FTIR)、扫描电子显微镜(SEM)、X射线衍射分析(XRD)和紫外可见吸收光谱(UV-Vis)等表征手段对所制备的酞菁氧钛纳米材料进行了形貌、结构和光学性质的表征。在标准大气压下制备的酞菁氧钛纳米片在本论文首次报道,通过X射线衍射分析酞菁氧钛纳米片在结构上属a相,除了在Q带的630 nm和730 nm左右两个吸收峰外,在近红外区870 nm附近也有很强的吸收。低压下,随着加热温度的升高,酞菁氧钛纳米材料的结构由a相向α+β混合相转变；此外,紫外可见吸收光谱表明：在不同加热温度、衬底温度、退火温度条件下制备的TiOPc纳米材料在B带和Q带的吸收展宽和吸收峰位都有明显的变化。为了更进一步研究酞菁氧钛纳米材料在有机太阳能电池上的特性,制备了以TiOPc薄膜为光学活性层的有机小分子太阳能电池,研究了不同TiOPc薄膜厚度对器件的影响,研究了TiOPc薄膜经过不同温度退火对器件的影响。制备并研究了基于光谱互补性极强的有机小分子TiOPc/C60和有机高分子P3HT/PCBM为活性层材料的三种不同器件结构。分析了影响器件效率的因素,为进一步优化器件结构,制备高效率的叠层光伏器件奠定了实验基础。
[Abstract]:Titanium phthalocyanine (TiOPc) is an excellent organic semiconductor material. Its molecular structure is different from that of other planar metal phthalocyanines, and it is a large heterocyclic non-planar structure containing 18 蟺 electrons. Titanium phthalocyanine has high carrier production rate and strong absorption in near infrared, making it in organic photovoltaic devices, airfield effect transistors, organic light emitting diodes, Nonlinear photonic equipment and photocopying / laser printing technology have been widely used. The research work of this paper mainly includes the following points: this paper adopts organic vapor deposition method to control the heating temperature, temperature gradient, chamber pressure, gas flow rate, heat preservation time of raw materials. Titanium phthalocyanine nanocrystals were prepared by organic vapor deposition at substrate temperature. The morphology, structure and optical properties of titanium phthalocyanine nanocrystalline were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-Vis-visible absorption spectroscopy (UV-Vis). Titanium phthalocyanine nanoparticles prepared at standard atmospheric pressure are reported for the first time in this paper. The structure of titanium phthalocyanine nanocrystals is a phase by X-ray diffraction analysis, except for two absorption peaks at 630 nm and 730 nm in the Q band. There is also a strong absorption near 870 nm in the near infrared region. At low pressure, with the increase of heating temperature, the structure of titanium phthalocyanine nanocrystalline changed from a phase to a 尾 mixed phase. The absorption broadening and absorption peak positions of TiOPc nanocrystalline materials prepared at annealing temperature have obvious changes in both B and Q bands. In order to further study the properties of titanium phthalocyanine nanomaterials on organic solar cells, a small organic solar cell with TiOPc thin film as optical active layer was prepared. The effect of different thickness of TiOPc film on the device was studied. The effect of annealing temperature on TiOPc films was investigated. Three kinds of device structures based on organic small molecule TiOPc/C60 and organic polymer P3HT/PCBM as active layer materials were prepared and studied. The factors influencing the device efficiency are analyzed, which lays an experimental foundation for the further optimization of the device structure and the preparation of high efficiency laminated photovoltaic devices.
【学位授予单位】：云南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TB383.1;TM914.4

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