钙钛矿敏化TiO2-SrTiO3纳米棒太阳能电池的制备及性能研究

PDF全文下载：2016060648

李阳，洪永，刘秋红，张敏，孙琼，董立峰*

（青岛科技大学 材料科学与工程学院，山东 青岛266042）

摘要：采用简单的水热法在FTO（掺杂氟的SnO₂导电玻璃（SnO₂:F））衬底上直接合成了一维取向的单晶金红石型二氧化钛薄膜，然后使用二氧化钛纳米棒作为模板和反应物Sr(OH)₂作为锶源，通过水热反应成功在TiO₂纳米棒阵列的表面沉积了SrTiO₃立方纳米颗粒。并以TiO₂-SrTiO₃作为工作电极，钙钛矿型的CH₃NH₃PbI₃和CsSnI_2.95-F_0.05分别作为光敏剂和电解质组装敏化太阳能电池。通过调整煅烧温度和二次水热反应中Sr(OH)₂溶液的浓度，钙钛矿敏化太阳能电池的光电转换性能有明显改善，最高效率达到0.34%，是未经SrTiO₃修饰样品的2倍。

关键词：太阳能电池；TiO2；SrTiO3； 钙钛矿

中图分类号：O 484.4文献标志码：A

Synthesis of TiO₂-SrTiO₃Nanorod Arrays and Their Photoelectrical Performance in Perovskite Sensitized Solar Cells

LI Yang, HONG Yong, LIU Qiuhong, ZHANG Min, SUN Qiong, DONG Lifeng

(College of Materials Science and Engineering, Qingdao University of Science and

Technology, Qingdao 266042, China)

Abstract: In this study, the heterostructured TiO₂-SrTiO₃nanorod array films were synthesized through a two-step hydrothermal method. Perovskite SrTiO₃cubic nanoparticles were evenly deposited on the surface of single-crystal TiO₂nanorod arrays. All-solid-state solar cells were fabricated with TiO₂-SrTiO₃heterostructured composite as the photoanode, perovskite CH₃NH₃PbI₃and CsSnI_2.95-F_0.05as the sensitizer and electrolyte respectively. From photoelectrical measurement, the performance of solar cells was highly improved through changing sintering temperature and the concentration of strontium precusor. The highest photoelectrical conversion efficiency of SrTiO₃-TiO₂system reached 0.34%, which was about twice of the undecoratedTiO₂system.

Key words: solar cell；TiO₂; SrTiO₃; perovskite

 收稿日期：2015-05-24

基金项目：国家自然科学基金项目（51172113, 51402161）；国家教育部博士点基金项目（20123719110001）;国家国际科技合作专项项目（2014DFA60150）;中国博士后科学基金特别资助项目（2013T60652）；中国博士后科学基金面上项目（2012M521297）;山东省博士后创新项目专项资金项目（201203028）.

作者简介：李阳（1989—），女，硕士研究生.*通信联系人.

文章编号：16726987（2016）06064806；DOI：10.16351/j.16726987.2016.06.011