Enhanced Lifetime and Photostability with Low-Temperature Mesoporous ZnTiO3/Compact SnO2 Electrodes in Perovskite Solar Cells
Enhanced Lifetime and Photostability with Low-Temperature Mesoporous ZnTiO3/Compact SnO2 Electrodes in Perovskite Solar Cells
复制标题
钙钛矿太阳能电池中的低温介孔 ZnTiO3/紧凑型 SnO2 电极可提高寿命和光稳定性
DOI：
10.1002/anie.201911796
复制
发表时间：
2019-11-04
影响因子：
16.6
通讯作者：
Xu, Dongsheng
中科院分区：
文献类型：
--
作者：
Guo, Fengwan;Sun, Xiangyu;Xu, Dongsheng
具有25%的功率转换效率（PCE）的永磁太阳能电池（PSC）主要具有SnO 2或TiO 2作为电子传输层（ETL）。目前，钛酸锌（ZnTiO 3，ZTO）由于其弱的光效应、优异的载流子提取和转移性能而被提议作为介孔ETL。通过旋涂ZTO油墨并在150 ℃以下退火获得均匀的中孔膜。基于Cs（0.05）FA（0.81）MA（0.14）PbI（2.55）B（r0.45）钙钛矿夹在SnO 2介晶ZTO电极和Spiro-OMeV层之间的光伏器件实现了20.5%的PCE。在100天寿命测试后，PSC在未被封装的情况下保持了其原始效率的95%以上。此外，当在AM 1.5 G照明（100 mW cm（-2））下在最大功率点电压下经受120 h时，PSC保持超过95%的初始性能，表现出上级的工作稳定性。ZTO的应用为PSC的ETL提供了更好的选择。
Perovskite solar cells (PSCs) with power conversion efficiencies (PCEs) of 25 % mainly have SnO2 or TiO2 as electron-transporting layers (ETLs). Now, zinc titanate (ZnTiO3, ZTO) is proposed as mesoporous ETLs owing to its weak photo-effect, excellent carrier extraction, and transfer properties. Uniform mesoporous films were obtained by spinning coating the ZTO ink and annealed below 150 degrees C. Photovoltaic devices based on Cs(0.05)FA(0.81)MA(0.14)PbI(2.55)B(r0.45) perovskite sandwiched between SnO2-mesorporous ZTO electrode and Spiro-OMeTAD layer achieved the PCE of 20.5 %. The PSCs retained more than 95 % of their original efficiency after 100 days lifetime test without being encapsulated. Additionally, the PSCs retained over 95 % of the initial performance when subjected at the maximum power point voltage for 120 h under AM 1.5 G illumination (100 mW cm(-2)), demonstrating superior working stability. The application of ZTO provides a better choice for ETLs of PSCs.