溶液法合成的功能无机材料氧化镍对钙钛矿太阳能电池光电性能的影响  

Effect of the functional inorganic material nickel oxide synthesized by solution method on the photoelectric performance of perovskite solar cells

作　　者：李龙飞 叶雅奇 江文 苏兆俊 赵杰[2] 孔祥强[1] LI Longfei;YE Yaqi;JIANG Wen;SU Zhaojun;ZHAO Jie;KONG Xiangqiang(School of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266000,China;College of Energy,Soochow Institute for Energy and Materials Innovations,and Key Laboratory of Advanced Carbon Material and Wearable Energy Technologies of Jiangsu Province,Soochow University,Suzhou 215000,China)

机构地区：[1]山东科技大学机械电子工程学院,青岛266590 [2]苏州大学能源材料创新研究院,江苏省先进碳材料与可穿戴能源技术重点实验室,苏州215000

出　　处：《复合材料学报》2022年第5期1967-1975,共9页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(21971172,51776115,21671141);江苏省自然科学基金(BK20191425);山东省研究生导师指导能力提升计划(SDYY17037);山东科技大学研究生导师指导能力提升计划(KDYC17009);江苏省光电工程高等学校重点学科建设项目;江苏省光伏科学与工程协同创新中心(SKLPST201902)。

摘　　要：功能无机材料氧化镍(NiO_(x))作为钙钛矿太阳能电池中最有前途的空穴传输材料之一,其有着高空穴迁移率、良好的稳定性、易于加工以及适合的费米能级等优点。但是,由于NiO_(x)自身固有电导率低,Ni空位的电离能相当大,未掺杂的NiO_(x)中空穴密度受到很大限制,加上孔洞的积累增加了载流子复合的可能,从而降低了有效的电荷收集。因此,优化NiO_(x)薄膜的成膜质量是解决上述问题的关键。本文通过溶液法使用乙二醇甲醚(MEA)、乙醇(EA)和去离子水作为溶液,分别制备了DME-NiO_(x)、EA-NiO_(x)和NCs-NiO_(x)薄膜,并在浓度调节范围内对基于NiO_(x)的钙钛矿器件进行优化,最终得到了光电转化效率(PCE)为18.50%,开路电压(V_(oc))为1.034 V,短路电流(J_(sc))为22.94 mA/cm^(2),填充因子(FF)为78%的最佳器件。Functional inorganic material nickel oxide(NiO_(x))as one of the most promising hole transport materials in perovskite solar cells,it has the advantages of high hole mobility,good stability,easy processing and suitable Fermi level.However,due to the inherent low conductivity of NiO_(x) itself,the ionization energy of Ni vacancies is quite large,and the hole density in undoped NiO_(x) is greatly restricted.In addition,the accumulation of holes increases the possibility of carrier recombination,thereby reducing the effective charge collection.Therefore,optimizing the quality of NiO_(x) film formation is the key to solving the above problems.In this paper,DME-NiO_(x),EA-NiO_(x) and NCs-NiO_(x) films were prepared by solution method using ethylene glycol methyl ether(MEA),ethanol(EA)and deionized water as solutions.And optimized the NiO_(x)-based perovskite device within the concentration adjustment range.In the end,the best device with a photoelectric conversion efficiency(PCE)of 18.50%,an open circuit voltage(V_(oc))of 1.034 V,a short circuit current(J_(sc))of 22.94 mA/cm^(2) and a fill factor(FF)of 78%is obtained.

关 键 词：钙钛矿太阳能电池 空穴传输材料 氧化镍 溶液法 光电转化效率 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ138.13[化学工程—无机化工]