氧化锆间隔层的低温喷涂制备及其三层结构钙钛矿太阳能电池应用性能  

Zirconia Spacer:Preparation by Low Temperature Spray-coating and Application in Triple-layer Perovskite Solar Cells

作　　者：张万文 罗建强 刘淑娟[1] 马建国[1] 张小平[1] 杨松旺[2] ZHANG Wanwen;LUO Jianqiang;LIU Shujuan;MA Jianguo;ZHANG Xiaoping;YANG Songwang(Jiangxi Province Key Laboratory of Synthetic Chemistry,East China University of Technology,Nanchang 330013,China;CAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China)

机构地区：[1]东华理工大学江西省合成化学重点实验室,南昌330013 [2]中国科学院上海硅酸盐研究所,中国科学院能量转换材料重点实验室,上海201899

出　　处：《无机材料学报》2023年第2期213-218,I0001-I0002,共8页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(52162020);Jiangxi Provincial Natural Science Foundation(20202BABL203012);Jiangxi Province Key Laboratory of Synthetic Chemistry(202005)。

摘　　要：氧化钛/氧化锆/碳三层结构钙钛矿太阳能电池(Perovskite solar cells,PSCs)具有原材料廉价、制备工艺易放大和稳定性好等优势,受到了广泛关注。但三层结构PSCs的低温制备研究进展缓慢,主要原因之一在于难以在低温条件下构建合适的氧化锆间隔层。本研究以尿素为孔隙率调节剂,用简单的喷涂法制备多孔氧化锆间隔层用于三层结构PSCs。通过调节喷涂次数优化氧化锆层厚度为1100 nm时,电池的性能最优,单电池功率转换效率达到14.7%,5块电池串联模块(5×0.9 cm×2.5 cm)达到10.8%。PSCs在恒温恒湿箱(25℃,湿度40%)保存200 d,功率转换效率保持稳定,没有明显下降。柔性基底上的氧化锆层经50次弯曲测试后保持完整,未见脱落。与传统的丝网印刷氧化锆间隔层制备方法相比,本研究的喷涂方法具有方法简便、操作温度低、与柔性基底兼容性好的优点。Perovskite solar cells(PSCs)with structure of TiO_(2)/ZrO_(2)/carbon triple-layer are attractive recently because of their inexpensive raw materials,scalable fabrication process,and outstanding stability.But little progress has been made in the low temperature fabrication of TiO_(2)/ZrO_(2)/carbon triple-layer structured PSCs.A major reason is that it is rather difficult to construct the ZrO_(2)spacer layer at low temperature.Herein,we report a facile low-temperature spray-coating method to prepare effective ZrO_(2)spacer layer in TiO_(2)/ZrO_(2)/carbon triple-layer PSCs using urea to tune the porosity.After optimizing the amount of urea and the thickness of zirconia to 1100 nm,power conversion efficiencies(PCE)of 14.7%for a single cell and 10.8%for a module with 5 cells connected in series(5×0.9 cm×2.5 cm)were achieved.Furthermore,the PSCs could be stable for 200 d at constant temperature(25)and humidity℃(40%).With this spray coating method,the zirconia layer on flexible substrate can endure 50 times of bending without any cracking.Compared to the conventional screen-printing method of ZrO_(2)spacer layer,the spray-coating alternative developed in this work shows advantages of more convenient to process,preparation under lower temperature,and compatibility to flexible substrate.

关 键 词：钙钛矿太阳能电池 三层结构 低温 氧化锆 喷涂 

分 类 号：TQ174[化学工程—陶瓷工业]