n-型自掺杂富勒烯铵盐及其自组装的研究

发布时间：2017-12-31 05:00

本文关键词：n-型自掺杂富勒烯铵盐及其自组装的研究　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：有机太阳能电池(OSCs)和钙钛矿太阳能电池(pero-SCs)因具有可溶液加工、结构简单且可印刷制作大面积柔性器件等优点,成为近年来最具发展前景的两类光伏技术。富勒烯及其衍生物是一类典型的n-型半导体材料,且具有优异的电子传输性能,作为太阳能电池阴极界面修饰层材料发挥了重要作用。该类材料不仅可以有效提高器件的能量转换效率(PCE),还能够改善其整体稳定性,因此受到诸多关注。本论文在先前研究工作的基础上,对不同阴离子的富勒烯铵盐的n-型自掺杂及其自组装特性进行了系统性研究,并发现和表征了一种独特的二维网络状超分子结构。主要内容如下：1.在n-型自掺杂富勒烯铵碘盐(PCBANI)构效关系研究的基础上,对另外两种不同卤素离子的富勒烯铵盐(PCBANBr和PCBANC1)的自掺杂特性及结构进行了表征,并进一步探究了该类富勒烯衍生物掺杂效应和导电性能的影响因素。2. PCBANI能够形成一种层状有序堆积的自组装结构,通过XRD、HRTEM、 SEM、XPS及模拟计算等手段对该结构进行了表征和验证,阐释了碘离子-C60(anion-π)作用、静电作用和C60核的π-π作用三者平衡驱动PCBANI自组装的机制。碘离子在其自组装过程中发挥了重要作用：它通过与富勒烯核形成anion-π作用将碘离子周围C60的π共轭体系相互连接,从而形成了一种二维网络结构。显然,具有分子间紧密有序堆积结构的自组装体能够有效提高材料的电子传输性能,因此我们通过单载子电子器件(Electron-Only Device)和有机场效应晶体管(OFET)对PCBANI的有序薄膜和无序薄膜进行了测试,进一步证明了自组装结构在改善富勒烯导电性能方面具有显著优势。3.对另外几种富勒烯铵盐(PCBDANI、PCBANBr、PCBANBr-P、PCBANCl)的自组装行为进行了研究,为调控自组装结构和开发该类富勒烯衍生物的应用奠定了基础。本论文工作对控制电子传输材料有序堆积和抑制缺陷形成的自组装研究提供了一种有效策略。在此基础上,n-型自掺杂富勒烯能够自组装为多种新型结构(如纳米线、纳米管、纳米粒子等),为进一步开发其在光伏器件、纳米电子等方面的新功能奠定了坚实基础。
[Abstract]:Organic solar cell (OSCs) and perovskite solar cell (pero-SCs) because of its solution process, simple structure and can be used for printing large flexible devices has become the two kind of photovoltaic technology in recent years. The most promising fullerenes are n- type semiconductor material for a class of typical, and has electronic transmission performance excellent, as the cathode interface modification layer of solar cell materials play an important role. This kind of material can not only improve the efficiency of energy conversion devices (PCE), but also can improve the overall stability, so it has been a lot of attention. Based on the previous research work on the n- type of fullerene anions from different ammonium salts doping and self-assembly properties were systematically studied and the discovery and characterization of a 2D network like supramolecular structure unique. The main contents are as follows: 1. self doped in n- Hetero fullerene ammonium iodide (PCBANI) on the basis of the study of structure-activity relationship, in addition to two different halogen ion fullerene salts (PCBANBr and PCBANC1) of the self doping properties and structure characterization, and further explores the influence of fullerene doping effect and conductivity factor of.2. PCBANI can form self-assembled structures a layered, ordered by XRD, HRTEM, SEM, XPS and simulation calculation methods were used to characterize and validate the structure, explains the iodine ion -C60 (anion- PI) effect, electrostatic effect and C60 core tt-tt for the balance of the three driving mechanism of PCBANI self-assembly. Iodine ions play an important role in the self-assembly process: it is through the formation of nuclear and fullerene anion- PI effect conjugation system of iodine ions around C60 are connected to each other, thus forming a two-dimensional network structure. Obviously, with close intermolecular Ordered self-assembly structure can effectively improve the electron transport properties of materials, so we use single carrier electronic devices (Electron-Only Device) and organic field-effect transistors (OFET) ordered film on PCBANI and disordered films were tested, further proved the self-assembly structure in improving the conductive properties of fullerenes has significant advantage of.3. other kinds of fullerenes (PCBDANI, PCBANBr, PCBANBr-P ammonium salt, PCBANCl) self-assembly behavior was studied, the basis for the application of regulation lay the self-assembled structure and the development of fullerene derivatives. The control of electron transport materials and ordered self-assembly of inhibition of defect formation provides an effective strategy. On this basis, the n- type self doped fullerenes can self assemble into a variety of new structures (such as nanowires, nanotubes, nanoparticles, etc.) for further It lays a solid foundation for the development of its new functions in photovoltaic devices, nanoscale and so on.

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O641.3;TM914.4

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