本文選題：有機(jī)電雙穩(wěn)器件　切入點(diǎn)：旋涂法　出處：《北京交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：為了滿足下一代光電器件的需求,人們開始了對于新型存儲(chǔ)器的廣泛研究。基于有機(jī)/聚合物材料制備的電雙穩(wěn)器件因其制備工藝簡單,成本低,尺寸小,存儲(chǔ)密度高等優(yōu)點(diǎn)受到了越來越多的關(guān)注。本工作基于成熟的商業(yè)化聚合物材料MEH-PPV,分別結(jié)合了聚合物PEG(聚乙二醇)和有機(jī)小分子Alq3,采用旋涂的方法制備有機(jī)電雙穩(wěn)器件,并對器件的電學(xué)性能進(jìn)行了測試,同時(shí)對影響器件電雙穩(wěn)特性的因素和器件的工作機(jī)理開展了一系列的探討與研究。主要工作內(nèi)容如下:(1)PEG作為一種成熟的商業(yè)化介電聚合物材料,因其價(jià)格低廉,性能穩(wěn)定,綠色溶劑等優(yōu)點(diǎn),被用于各種新型光電子器件的研究與生產(chǎn)中。本研究將PEG與具有優(yōu)良半導(dǎo)體特性的MEH-PPV相結(jié)合,通過旋涂的方式制備了功能層為PEG與MEH-PPV的全聚合物電雙穩(wěn)器件:A1/MEH-PPV/PEG/ITO。研究了 PEG的分子量,濃度,以及其退火溫度對器件性能的影響,在此研究基礎(chǔ)上對器件進(jìn)行了優(yōu)化,器件的電流開關(guān)比可以達(dá)到103。此外,通過SEM測試表征了活性層的膜形貌,并結(jié)合器件性能研究了膜形貌與器件性能的關(guān)聯(lián)因素。同時(shí),通過對器件的I-V曲線進(jìn)行了線性擬合,擬合的結(jié)果表明,MEH-PPV/PEG器件電雙穩(wěn)特性的產(chǎn)生主要?dú)w因于活性層界面處的電荷俘獲。(2)Alq3作為一種成熟的商業(yè)化有機(jī)小分子材料,在有機(jī)OLED中已經(jīng)被廣泛應(yīng)用,近些年來,Alq3開始被引入到有機(jī)存儲(chǔ)器的研究,在以往的研究中,Alq3活性層都是利用傳統(tǒng)的蒸鍍方式,這大大的增加了制備成本,限制了器件的應(yīng)用前景。本研究首次采用全溶液旋涂方法,制備了活性層為MEH-PPV/Alq3的有機(jī)電雙穩(wěn)器件。器件的I-V測試結(jié)果表明,單層的MEH-PPV或者單層的Alq3器件都不具有電雙穩(wěn)特性,而基于MEH-PPV/Alq3活性層的器件展現(xiàn)了很好的電雙穩(wěn)特性,其最大開關(guān)比達(dá)到104。結(jié)合有機(jī)電子學(xué)理論模型與器件I-V曲線擬合,研究了器件的可能工作機(jī)理。最后,對器件進(jìn)行了循環(huán)脈沖和持續(xù)時(shí)間的測試,得出器件具有良好的讀寫擦除能力,并且在空氣中具有穩(wěn)定的高低態(tài)保持有能力。
[Abstract]:In order to meet the needs of the next generation of optoelectronic devices, people have begun to study the new type of memory widely. Because of its simple fabrication process, low cost and small size, the electric bistable devices based on organic / polymer materials have been fabricated. More and more attention has been paid to the advantages of high storage density. Based on the mature commercial polymer MEH-PPVs, PEG (Poly (ethylene glycol)) and Alq3 (organic small molecule) were used to fabricate electromechanical bistable devices by spin coating. The electrical properties of the device are also tested. At the same time, a series of discussions and studies have been carried out on the factors affecting the electrical bistability of the devices and the working mechanism of the devices. The main contents of the work are as follows: (1) as a mature commercial dielectric polymer material, because of its low price and stable performance, Green solvent has been used in the research and production of various new optoelectronic devices. In this study, PEG is combined with MEH-PPV with excellent semiconductor properties. An all-polymer bistable device with a functional layer of PEG and MEH-PPV was fabricated by spin-coating. The effects of molecular weight, concentration and annealing temperature of PEG on the properties of the device were investigated, and the effects of the molecular weight, concentration and annealing temperature of PEG on the performance of the device were studied. The current-to-switch ratio of the device can reach 103. In addition, the film morphology of the active layer is characterized by SEM, and the correlation factors between the film morphology and the device performance are studied. At the same time, the I-V curve of the device is fitted linearly. The fitting results show that the electrical bistability of MEH-PPV-PEG devices is mainly due to the charge trapping at the active layer interface. As a mature and commercial organic small molecule material, it has been widely used in organic OLED. In recent years, Alq3 has been introduced into the study of organic memory. In the previous studies, the active layer of Alq3 was deposited by traditional evaporation, which greatly increased the cost of preparation. In this study, organic bistable devices with active layer of MEH-PPV/Alq3 have been prepared for the first time. The I-V test results show that neither monolayer MEH-PPV nor monolayer Alq3 devices have the characteristics of electrical bistability. The device based on the active layer of MEH-PPV/Alq3 exhibits good bistability and its maximum switching ratio reaches 104. The possible working mechanism of the device is studied by combining the theoretical model of organic electronics with the I-V curve fitting of the device. The cycle pulse and duration of the device are tested. It is concluded that the device has good literacy erasure ability and stable high and low state in the air.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN15;TB383.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 曹亞鵬;胡煜峰;李劍燾;葉海航;呂龍鋒;寧宇;魯啟鵬;唐愛偉;婁志東;侯延冰;滕楓;;Electrical bistable devices using composites of zinc sulfide nanoparticles and poly-(N-vinylcarbazole)[J];Chinese Physics B;2015年03期

2 Zubair Ahmad;Mahdi Hasan Suhail;Issam Ibrahim Muhammad;Wissam Khayer Al-Rawi;Khaulah Sulaiman;Qayyum Zafar;Ahmad Sazali Hamzah;Zurina Shaameri;;MEH-PPV/Alq_3-based bulk heterojunction photodetector[J];Chinese Physics B;2013年10期

3 仝淑敏;宋娟;凌啟淡;;聚合物電存儲(chǔ)材料及其雙電極型存儲(chǔ)器件[J];化學(xué)進(jìn)展;2011年08期

4 ;The effect of modified layers on the performance of inverted ZnO nanorods/MEH-PPV solar cells[J];Science China(Physics,Mechanics & Astronomy);2011年03期

5 劉舉慶;陳淑芬;陳琳;解令海;錢妍;凌啟淡;黃維;;有機(jī)/聚合物電存儲(chǔ)器及其作用機(jī)制[J];科學(xué)通報(bào);2009年22期

6 石勝偉;彭俊彪;;有機(jī)電雙穩(wěn)態(tài)器件[J];化學(xué)進(jìn)展;2007年09期

相關(guān)碩士學(xué)位論文 前1條

1 曹亞鵬;聚合物/納米顆粒復(fù)合薄膜電雙穩(wěn)特性研究[D];北京交通大學(xué);2015年

，

本文編號(hào)：1647950