籽晶层对氧化锡纳米棒生长质量及其钙钛矿太阳能电池性能的影响  

Effect of seed layers on growth of SnO_(2) nanorods and performance of perovskite solar cells

作　　者：张勇 翟光美[1,2] 郑露露[1] 高领伟 陈青 任锦涛 郁军 许并社 ZHANG Yong;ZHAI Guang-mei;ZHENG Lu-lu;GAO Ling-wei;CHEN Qing;REN Jin-tao;YU Jun;XU Bing-she(Key Laboratory of Interface Science and Engineering in Advanced Materials(Ministry of Education),Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,China;School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,太原030024 [2]中国科学院可再生能源重点实验室,广州510640 [3]太原理工大学材料科学与工程学院,太原030024

出　　处：《材料工程》2021年第10期55-62,共8页Journal of Materials Engineering

基　　金：国家自然科学基金项目(61475110);山西省青年科技研究基金项目(201701D221079);中国科学院可再生能源重点实验室开放基金(Y807k31001)。

摘　　要：利用SnCl_(2)·2H_(2)O和SnO_(2)纳米粒子为籽晶层前驱体分别生长SnO_(2)纳米棒,并作为电子传输层制备钙钛矿太阳能电池(PSCs)。综合利用场发射扫描电子显微镜(SEM)、X射线衍射仪(XRD)、紫外可见近红外分光光度计(UV-vis)、稳态光致发光光谱(PL)和伏安特性曲线(J-V)等表征技术,分析研究籽晶层前驱体对SnO_(2)纳米棒薄膜和钙钛矿薄膜的形貌、结构、光学性质、SnO_(2)/钙钛矿界面间的电荷转移能力以及电池性能的影响规律。结果表明:SnO_(2)纳米粒子相比SnCl_(2)·2H_(2)O能够形成更致密的籽晶层,从而更易于生长出平整、均匀的SnO_(2)纳米棒薄膜。沉积于以SnO_(2)纳米粒子为籽晶层的SnO_(2)纳米棒上的钙钛矿有源层具有更好的结晶质量和更强的光吸收性能,所制备电池的最高效率达到12.93%。本工作表明SnO_(2)纳米粒子是一种优异的生长SnO_(2)纳米棒薄膜的籽晶层材料,为制备高性能的基于一维电子传输材料的钙钛矿电池奠定了一定基础。SnO_(2)nanorods were grown on two kinds of seed layers formed from SnCl_(2)·2H_(2)O and SnO_(2)nanoparticles precursors,respectively,and used as one-dimensional electron transport materials to fabricate perovskite solar cell(PSCs).Effects of the seed layers on morphology,structure,optical properties of SnO_(2)nanorods and perovskite films,charge transfer at SnO_(2)/perovskite interfaces as well as device performance were investigated by utilizing field emission scanning electron microscopy(SEM),X-ray diffraction(XRD),ultraviolet-visible-near infrared spectroscopy(UV-vis),steady-state photoluminescence spectroscopy(PL)and volt-ampere characteristic curves(J-V).The results show that more dense seed layers can be formed from SnO_(2)nanoparticles and SnO_(2)nanorods films formed from SnO_(2)nanoparticles are more smooth and uniform relative to those grown from SnCl_(2)·2H_(2)O.The perovskite films deposited on the former show better crystallization quality and higher light absorption.The maximum efficiency of the device based on the SnO_(2)nanorods is 12.93%.This work demonstrates that SnO_(2)nanoparticles are a kind of excellent seed layer material for growing SnO_(2)nanorods films,and lays foundation for the preparation of high-performance perovskite solar cells based on one-dimensional electron transport materials.

关 键 词：钙钛矿太阳能电池 SnO_(2)纳米棒 电子传输层 SnCl_(2)·2H_(2)O SnO_(2)纳米粒子胶体 

分 类 号：TM914.4[电气工程—电力电子与电力传动]