收稿日期: 2016-05-23
网络出版日期: 2018-05-07
基金资助
国家自然科学基金资助项目(61306073);国家自然科学基金资助项目(61571278);江苏省自然科学基金资助项目(BK20130346);中国科学院战略重点研究资助项目(XDA09020201)
PMA:MoO$_3$ nanocomposite hole transport layer for organic solar cells
Received date: 2016-05-23
Online published: 2018-05-07
围绕着开发可溶液法加工非聚(3,4-乙烯二氧噻吩单体):聚苯乙烯磺酸钠(poly (3,4-ethylendioxythiophene):poly (sodium-p-styrenesulfonate), PEDOT:PSS) 电极界面修饰材料的核心目的, 研究了基于磷钼酸(phosphomolybdic acid, PMA)和纳米氧化钼(MoO$_{3}$) 复合物的新型空穴传输材料. 通过将 PMA 溶液和 MoO$_{3}$ 纳米粒子溶液进行混合, 制备了复合墨水(PMA:MoO$_{3}$). 该复合墨水在有机活性层表面具有很好的浸润性和成膜性. 利用 PMA:MoO$_{3}$复合空穴传输层(hole transport layer, HTL)制备的倒置 P3HT:PC$_{61}$BM 光伏器件的开 路电压和填充因子(fill factor, FF)均比基于单一 PMA 或 MoO$_{3}$ 制备的器件有所提升. 进一步优化了 PMA:MoO$_{3}$ 复合墨水中两个组分间的比例, 发现当复合墨水中 MoO$_{3}$的含量为 66${\%}$ 时, 器件性能达到最优, 其光电转换效率(power conversion efficiency, PCE)为 3.71${\%}$. 成功验证了利用金属氧化物与多金属氧簇(polyoxometalate, POM)复合物作为电极界面缓冲层 制备有机太阳能电池的可行性, 为开发新型电极界面修饰材料提供了一个新的研究思路.
王宜玲, 伊金垛, 骆群, 谢中明, 李艳青, 马昌期, 罗立强 . 基于磷钼酸和纳米氧化钼的复合空穴传输层材料及其在有机太阳能电池中的应用[J]. 上海大学学报(自然科学版), 2018 , 24(2) : 225 -235 . DOI: 10.12066/j.issn.1007-2861.1804
To develop PEDOT:PSS (poly (3,4-ethylendioxythiophene):poly (sodium-p-styrenesulfonate)—hole transporting materials in polymer solar cells, a solution-processable nanocomposite ink based on MoO$_3$ nano-particles and phosphomolybdic acid (PMA) is reported. The PMA:MoO$_3$ composite ink can be easily prepared by simply mixing PMA and MoO$_3$ solutions in different weight ratios. This PMA:MoO$_3$ composite ink shows good wettability on polymer surface. A smooth and homogeneous thin film can be easily deposited on polymer surface via a spin-coating process without any surface treatment. Both open circuit voltage ($V_ {OC}$) and fill factor (FF) of the PMA:MoO$_3$-based P3HT:PC$_{61}$BM cells are higher than that based on PMA or MoO$_3$ cells. Influence of the blend ratio between PMA and MoO3 on solar cell performance was carried out, and the optimized best blend ratio was found to be 1:2 for PMA:MoO$_3$, with which a highest device performance of 3.71% was achieved. The current work demonstrates that nanocomposite of metal oxide and polyoxometalate (POM) can serve as an excellent electrode buffer layer for solution-processed organic electronics.
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