有機太陽電池的制備及其相關(guān)性能的研究
發(fā)布時間：2019-06-02 01:02
【摘要】：太陽能是一種取之不盡用之不竭的潔凈能源，直接將太陽能轉(zhuǎn)化為電能是解決當前能源危機的有效方法之一。經(jīng)過多年的探索和技術(shù)積累，太陽電池的發(fā)展取得了巨大的進步。相比于傳統(tǒng)無機太陽電池，有機太陽電池具有低成本、易加工、質(zhì)量輕、可卷曲等諸多優(yōu)點，已經(jīng)成為最有希望的下一代太陽電池之一，受到了科學(xué)界及產(chǎn)業(yè)界的廣泛關(guān)注。自誕生以來，盡管有機太陽電池取得了許多成就，但是離其進一步的商業(yè)化應(yīng)用進而惠及人們的日常生活還有一定的距離。 本論文以P3HT作為給體為例研究了有機電池中優(yōu)化器件性能的主要方法，然后基于一系列5,6-二辛氧基-4,7-二噻吩苯并[1,2,5]噻二唑作為構(gòu)建單元的齊聚物(S2-S8)作為有機電池中的給體材料，來研究這些齊聚物的鏈長與其光伏性質(zhì)之間的關(guān)系，同時選取了相對應(yīng)的帶隙相對較窄的聚合物作為對比。此外，基于此聚合物我們還研究了聚合物的分子量大小與它們的光伏器件性能之間的關(guān)系。主要工作如下： 第二章中，我們以有機電池給體材料的明星分子P3HT作為給體材料，采用傳統(tǒng)的本體異質(zhì)結(jié)正裝器件結(jié)構(gòu)，從器件的角度研究了有機電池中提高器件能量轉(zhuǎn)換效率的方法。主要包括：優(yōu)化活性層厚度，采用熱退火和溶劑退火，使用添加劑以及采用界面層材料優(yōu)化界面接觸等。這些工作對有機電池器件的優(yōu)化提供了方法及其思路。 第三章中，我們依次研究了一系列共軛齊聚物到聚合物的電子結(jié)構(gòu)、自組裝和結(jié)晶排列等性質(zhì)，從微觀到宏觀再到應(yīng)用等角度。我們以這些有機材料作為電子給體材料，以富勒烯的衍生物PC71BM作為電子受體材料，制備了結(jié)構(gòu)為ITO/PFN-OX/ActiveLayer/MoO3/Al的有機電池器件，其中PFN-OX是一種加熱時可以交聯(lián)的陰極界面修飾層材料。我們發(fā)現(xiàn)，齊聚物的不同鏈長對電池器件的性能有著很重要的影響。隨著鏈長的增加，器件的開路電壓不斷降低，而短路電流和填充因子卻逐漸增加。器件的能量轉(zhuǎn)換效率從兩個單元時的0.8%遞進式的增加到八個單元時的2.5%。所得結(jié)果表明，齊聚物的光學(xué)性質(zhì)，光伏性能以及采用掠入角X射線衍射（GIXD）測得的薄膜結(jié)構(gòu)等隨著鏈長的增加均表現(xiàn)出一定的規(guī)律性，，齊聚物和聚合物中共軛鏈的聚集性對材料的吸收，遷移率，光伏性能都有很重要的影響。這些結(jié)果為研究齊聚物的鏈長和光伏性能之間的關(guān)系奠定了基礎(chǔ)，為進一步的去探究共軛鏈的長度及其多分散性的單元對有機電池器件性能的影響提供了方法和思路，同時，也給新材料的設(shè)計一定啟發(fā)。 第四章中，我們分析了聚合物的分子量與它們的光學(xué)性能，遷移率，光伏性能等之間的關(guān)系。所采用的器件結(jié)構(gòu)同上，均是倒置的器件結(jié)構(gòu)。我們發(fā)現(xiàn)，聚合物的分子量對器件性能有很大的影響，具體而言，過低或過高的分子量都對器件的短路電流、開路電壓、以及填充因子等參數(shù)有著不利影響。我們認為，隨著分子量的增加，聚合物鏈的共軛長度增加，在體異質(zhì)結(jié)互穿網(wǎng)絡(luò)中能夠行成更好的連接通道，有利于空穴的傳輸。然而過高的分子量導(dǎo)致聚合物的溶解性變差，以至于影響活性層的成膜質(zhì)量，導(dǎo)致器件性能降低。因此，在材料的合成過程中，合理控制材料的分子量是提高有機電池器件性能的有效途徑之一。
[Abstract]:Solar energy is an inexhaustible clean energy, and the direct conversion of solar energy into electric energy is one of the effective ways to solve the current energy crisis. After many years of exploration and technology accumulation, the development of the solar cell has made great progress. Compared with the traditional inorganic solar cell, the organic solar cell has the advantages of low cost, easy processing, light weight and curling, and has become one of the most promising next-generation solar cells, and is widely concerned by the scientific community and the industrial community. Since its birth, although the organic solar cell has made many achievements, its further commercial application, in turn, has a certain distance to people's daily life. The main method of optimizing the performance of the device in the organic battery was studied with P3HT as a donor. Then, a series of 5,6-dioctyloxy-4,7-dibenzo-benzene and[1,2,5] babylbenzene were used as the polymer of the building unit (S2-S8) as the donor in the organic battery. the relationship between the chain length of the oligomer and its photovoltaic property is studied, and a relatively narrow band gap of the polymer is selected as a pair, In addition, based on this polymer, we have also studied the correlation between the molecular weight of the polymer and the performance of their photovoltaic devices Department. Main work such as In the second chapter, we use the star molecule P3HT of the donor material of the organic battery as the donor material, adopt the structure of the conventional bulk heterojunction device, and study the energy conversion efficiency of the device in the organic battery from the angle of the device. The method mainly comprises the following steps of: optimizing the thickness of an active layer, adopting a thermal annealing and a solvent annealing, using an additive and adopting an interface layer material to optimize the interface; contact and the like. The work provides a method for the optimization of an organic battery device and In the third chapter, we study the electronic structure, self-assembly and crystal arrangement of a series of co-oligomer to the polymer, from the micro to the macro to the macro The organic materials with the structure of ITO/ PFN-OX/ ActiveLayer/ MoO3/ Al are prepared by using these organic materials as the electron donor material and the derivative PC71BM of the fullerene as the electron acceptor material, wherein the PFN-OX is a cathode interface which can be cross-linked when heated The modified layer material. We have found that the different chain lengths of the oligomer have a great effect on the performance of the cell device Important effects. As the chain length increases, the open-circuit voltage of the device decreases and the short-circuit current and the fill factor but gradually increases. When the energy conversion efficiency of the device is increased from 0.8% of the two units to eight units The results show that the optical properties of the oligomer, the photovoltaic properties and the film structure measured by the sweep-in angle X-ray diffraction (GXD) show a certain regularity with the increase of the chain length, and the aggregation of the co-polar chain in the oligomer and the polymer has a certain regularity. The charge, the mobility, the photovoltaic performance are all very good The results provide a basis for studying the relationship between the chain length and the photovoltaic properties of the oligomer, and provides a method and a method for further exploring the influence of the length of the common chain and the unit on the performance of the organic battery device. At the same time, the setting of the new material is also provided. in that fourth chap, we analyze the molecular weight of the polymer and their optical properties, mobility, photovoltaic property, the structure of the adopted device is the same as that of the same, An inverted device structure. We have found that the molecular weight of the polymer has a great effect on the performance of the device, in particular, too low or too high molecular weight to short-circuit current, open-circuit voltage, and fill factor of the device. The number has a negative effect. We believe that with the increase of the molecular weight, the total length of the polymer chain is increased, and the in-vivo heterojunction interpenetration network can be made into a better connecting channel, and the high molecular weight results in poor solubility of the polymer such that the film-forming quality of the active layer is affected, Therefore, in the process of material synthesis, the reasonable control of the molecular weight of the material is to improve the performance of the organic battery device.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM914.4
本文編號：2490712
[Abstract]:Solar energy is an inexhaustible clean energy, and the direct conversion of solar energy into electric energy is one of the effective ways to solve the current energy crisis. After many years of exploration and technology accumulation, the development of the solar cell has made great progress. Compared with the traditional inorganic solar cell, the organic solar cell has the advantages of low cost, easy processing, light weight and curling, and has become one of the most promising next-generation solar cells, and is widely concerned by the scientific community and the industrial community. Since its birth, although the organic solar cell has made many achievements, its further commercial application, in turn, has a certain distance to people's daily life. The main method of optimizing the performance of the device in the organic battery was studied with P3HT as a donor. Then, a series of 5,6-dioctyloxy-4,7-dibenzo-benzene and[1,2,5] babylbenzene were used as the polymer of the building unit (S2-S8) as the donor in the organic battery. the relationship between the chain length of the oligomer and its photovoltaic property is studied, and a relatively narrow band gap of the polymer is selected as a pair, In addition, based on this polymer, we have also studied the correlation between the molecular weight of the polymer and the performance of their photovoltaic devices Department. Main work such as In the second chapter, we use the star molecule P3HT of the donor material of the organic battery as the donor material, adopt the structure of the conventional bulk heterojunction device, and study the energy conversion efficiency of the device in the organic battery from the angle of the device. The method mainly comprises the following steps of: optimizing the thickness of an active layer, adopting a thermal annealing and a solvent annealing, using an additive and adopting an interface layer material to optimize the interface; contact and the like. The work provides a method for the optimization of an organic battery device and In the third chapter, we study the electronic structure, self-assembly and crystal arrangement of a series of co-oligomer to the polymer, from the micro to the macro to the macro The organic materials with the structure of ITO/ PFN-OX/ ActiveLayer/ MoO3/ Al are prepared by using these organic materials as the electron donor material and the derivative PC71BM of the fullerene as the electron acceptor material, wherein the PFN-OX is a cathode interface which can be cross-linked when heated The modified layer material. We have found that the different chain lengths of the oligomer have a great effect on the performance of the cell device Important effects. As the chain length increases, the open-circuit voltage of the device decreases and the short-circuit current and the fill factor but gradually increases. When the energy conversion efficiency of the device is increased from 0.8% of the two units to eight units The results show that the optical properties of the oligomer, the photovoltaic properties and the film structure measured by the sweep-in angle X-ray diffraction (GXD) show a certain regularity with the increase of the chain length, and the aggregation of the co-polar chain in the oligomer and the polymer has a certain regularity. The charge, the mobility, the photovoltaic performance are all very good The results provide a basis for studying the relationship between the chain length and the photovoltaic properties of the oligomer, and provides a method and a method for further exploring the influence of the length of the common chain and the unit on the performance of the organic battery device. At the same time, the setting of the new material is also provided. in that fourth chap, we analyze the molecular weight of the polymer and their optical properties, mobility, photovoltaic property, the structure of the adopted device is the same as that of the same, An inverted device structure. We have found that the molecular weight of the polymer has a great effect on the performance of the device, in particular, too low or too high molecular weight to short-circuit current, open-circuit voltage, and fill factor of the device. The number has a negative effect. We believe that with the increase of the molecular weight, the total length of the polymer chain is increased, and the in-vivo heterojunction interpenetration network can be made into a better connecting channel, and the high molecular weight results in poor solubility of the polymer such that the film-forming quality of the active layer is affected, Therefore, in the process of material synthesis, the reasonable control of the molecular weight of the material is to improve the performance of the organic battery device.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM914.4
【參考文獻】
相關(guān)期刊論文 前2條
1 黃龍;許向東;周東;于軍勝;蔣亞東;;基于P3HT的有機太陽能電池的特性研究[J];功能材料;2011年10期
2 封偉,王曉工;有機光伏材料與器件研究的新進展[J];化學(xué)通報;2003年05期
本文編號：2490712
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