本文選題：有機太陽能電池 + 陰極界面修飾�。� 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：有機太陽能電池以其成本低,制備工藝簡單,可大面積制備,靈活應(yīng)用于柔性器件且有機材料來源廣泛等諸多優(yōu)勢被人們認為是解決能源危機與環(huán)境污染的理想候選者。本篇論文主要針對陰極修飾層對聚合物太陽能電池各方面性能產(chǎn)生的影響進行了研究,分別從以下三個部分展開:(1)我們采用無機材料鋁和氯化鈉復(fù)合修飾ITO做倒置結(jié)構(gòu)有機太陽能電池的陰極緩沖層,使器件各方面性能均有大幅度提高。在多次重復(fù)實驗的情況下獲得了功率轉(zhuǎn)換效率(PCE)為3.88%的器件。最佳器件的性能遠比僅用鋁或者氯化鈉修飾的器件高出很多。更重要的是我們器件的穩(wěn)定性是傳統(tǒng)器件的1.7倍。性能的提高主要歸功于鋁和氯化鈉修飾ITO后使ITO的功函數(shù)從4.75 eV降到3.90 eV。(2)研究有機小分子做陰極緩沖層對基于P3HT:PC61BM共混物為有源層的有機太陽能電池各方面性能的影響。四種陰極緩沖層:BCP,TPBi,Alq3和TmPyPB插在活性層和金屬陰極之間,這些材料對器件的性能起主導(dǎo)作用。通過使用上述陰極緩沖層,器件的性能得到大幅度的改善。同時在穩(wěn)定性方面我們也進行了深入的研究,結(jié)果表明,緩沖層為TmPyPB的器件比緩沖層為其他有機材料的器件在穩(wěn)定性方面具有明顯優(yōu)勢。十五天后器件效率仍然在原始數(shù)據(jù)的80%以上,其性能可以與無機材料相比較。(3)制備了基于ZnPc(OC8H_(17)OPyCH_3I)_8為陰極緩沖層的倒置有機太陽能電池。對陰極緩沖層薄膜分別進行了溶劑蒸汽退火和過渡艙惰性氣體流退火處理,并利用原子力顯微鏡(AFM)對緩沖層表面形貌進行了研究。結(jié)果表明:這兩種退火方法都能使緩沖層形貌得以改善。電池效率(PCE)從2.14%提高到3.76%。同時與傳統(tǒng)器件相比較基于退火處理的陰極緩沖層器件穩(wěn)定性也得到了改善,使得器件壽命提高1.4倍。這種簡單陰極界面處理方法是聚合物太陽能電池特性得以改善的有效途徑。
[Abstract]:Organic solar cells are considered to be ideal candidates for solving energy crisis and environmental pollution because of their advantages such as low cost, simple preparation process, large area preparation, flexible application in flexible devices and a wide range of organic materials. In this paper, the effect of cathode modification layer on the performance of polymer solar cells is studied. We use inorganic material aluminum and sodium chloride to modify ITO as cathode buffer layer of inverted organic solar cells. The device with power conversion efficiency of 3.88% has been obtained under repeated experiments. The performance of the optimal device is much higher than that of the device modified only with aluminum or sodium chloride. More importantly, our devices are 1.7 times more stable than conventional devices. The improvement of performance is mainly attributed to the reduction of the work function of ITO from 4.75 EV to 3.90 EV / m2 after modification of ITO by aluminum and sodium chloride. The effect of organic small molecules as cathode buffer layer on the performance of organic solar cells based on P3HT: PC61BM blend as active layer is studied. Four kinds of cathode buffer layer: BCP-TPBiAlq3 and TmPyPB are intercalated between the active layer and the metal cathode. These materials play a leading role in the performance of the device. By using the cathode buffer layer mentioned above, the performance of the device is greatly improved. The results show that the devices with TmPyPB buffer layer have obvious advantages over those with other organic materials. After 15 days, the device efficiency is still over 80% of the original data, and its performance can be compared with that of inorganic materials. The cathodic buffer film was treated by solvent vapor annealing and transition chamber inert gas flow annealing respectively. The surface morphology of the buffer layer was studied by atomic force microscopy (AFM). The results show that both annealing methods can improve the morphology of buffer layer. Battery efficiency increased from 2.14% to 3.76%. At the same time, compared with the traditional devices, the stability of the cathodic buffer layer devices based on annealing treatment is improved, and the lifetime of the devices is increased by 1.4 times. This simple cathode interface treatment method is an effective way to improve the characteristics of polymer solar cells.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM914.4

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