【摘要】：晶體管自發(fā)明開始便一直引導(dǎo)著人類信息與通信技術(shù)的進(jìn)步。現(xiàn)今市場上主流晶體管主要是無機(jī)硅基晶體管,但其技術(shù)成本高,工藝較為復(fù)雜,給工業(yè)化生產(chǎn)帶來了困難。有機(jī)場效應(yīng)晶體管(OFET)是以無機(jī)半導(dǎo)體三極管為基礎(chǔ),使用有機(jī)半導(dǎo)體為材料而發(fā)展起來的新一代電子器件。在有機(jī)半導(dǎo)體中,聚合物半導(dǎo)體材料具有非常優(yōu)秀的光學(xué)和電學(xué)性能,它們通常具有很好的成膜性和柔韌性,這使得它們在大面積柔性器件上也有很好的發(fā)展前景。為了進(jìn)一步提高器件性能,研究者們需要發(fā)展更多類型的新材料,尤其是含缺電子的芳香基的材料,并深入理解其結(jié)構(gòu)與性能的關(guān)系。本論文的主要內(nèi)容:1.合成了一系列以NDI為核的金屬共軛聚合物(P1-P3)和二聚體(D1-D2),并對其結(jié)構(gòu)和性能進(jìn)行了表征。這些有機(jī)半導(dǎo)體材料都具有優(yōu)良的溶解性、成膜性和熱穩(wěn)定性。光譜吸收覆蓋紫外-可見光區(qū),金屬聚合物和二聚體的光學(xué)帶隙在1.46 eV-1.68 eV之間。研究表明:隨著噻吩環(huán)增加,有利于光譜吸收拓寬。但是隨著聚合物共軛鏈延長的同時,可能導(dǎo)致了聚合物鏈段的規(guī)整性的降低。2.合成了一系列NDI為核的有機(jī)共軛聚合物(B1,B2,T1,T2),并對其結(jié)構(gòu)性能進(jìn)行了研究和表征。這些聚合物都有良好的溶解性和熱穩(wěn)定性(分解溫度都在400℃以上)。它們的光學(xué)帶隙范圍在1.41 eV到1.59 eV之間,屬一類窄帶隙聚合物,帶隙的變化趨勢與NDI金屬聚合物一致。3.合成了新型的含卟啉和N-稠合傒基團(tuán)的小分子S1,并對其性能結(jié)構(gòu)進(jìn)行了測試。S1有較好的熱穩(wěn)定性,分解溫度超過300℃。其摩爾吸光系數(shù)為2.9×105 M-1cm-1,波普吸收覆蓋300 nm~800 nm,且500 nm-800 nm波段也有較強(qiáng)的吸收。預(yù)期該小分子可應(yīng)用于制備高性能的OFET和OPV。
[Abstract]:Transistors have been leading the progress of human information and communication technology since the invention of the transistor. At present, the main transistor in the market is mainly inorganic silicon based transistor, but its technical cost is high and the process is more complicated, which brings difficulties to industrial production. The airfield effect transistor (OFET) is a new generation of electronic devices based on the inorganic semiconductor transistor and using organic semiconductor as the material. In organic semiconductors, polymer semiconductors have excellent optical and electrical properties, and they usually have good film forming and flexibility, which makes them have a good development prospect in large area flexible devices. In order to further improve the performance of the devices, researchers need to develop more types of new materials, especially those containing aromatic groups lacking electrons, and understand the relationship between the structure and properties. The main content of this thesis is 1: 1. A series of metal conjugated polymers (P1-P3) and dimer (D1-D2) with NDI as core were synthesized and characterized. These organic semiconductor materials have excellent solubility, film forming and thermal stability. The optical band gap of metal polymer and dimer is between 1. 46 eV-1.68 eV and 1. 46 eV-1.68 eV. The results show that with the increase of thiophene ring, the absorption of thiophene can be widened. However, with the prolongation of conjugated chain, the regularity of polymer segment may decrease. 2. A series of organic conjugated polymers (B _ 1 / B _ (2) T _ (1) T _ (2) with NDI as nucleus were synthesized, and their structure and properties were studied and characterized. These polymers have good solubility and thermal stability (decomposition temperature is above 400 鈩，

本文編號：2217594