Semi-Planar Non-Fullerene Molecules Enhance the Durability of Flexible Perovskite Solar Cells.
Semi-Planar Non-Fullerene Molecules Enhance the Durability of Flexible Perovskite Solar Cells.
复制标题
半平面非富勒烯分子增强柔性钙钛矿太阳能电池的耐用性
DOI：
10.1002/advs.202105739
复制
发表时间：
2022-04
期刊：
影响因子：
15.1
通讯作者：
Li, Meng
中科院分区：
文献类型：
--
作者：
Liu, Hairui;Zhang, Zuhong;Su, Zhenhuang;Zuo, Weiwei;Tang, Ying;Yang, Feng;Zhang, Xilin;Qin, Chaochao;Yang, Jien;Li, Zhe;Li, Meng
柔性钙钛矿太阳能电池（FPSC）代表了下一代光伏和光电器件开发中的一项有前途的技术。SnO 2电子传输层（ETL）在FPSC的弯曲过程中通常会发生显著的开裂，这会显著损害其电荷传输性能。在此，引入半平面非富勒烯受体分子Y 6（基于BT核的稠合单元二噻吩并噻吩[3，2-B]-吡咯并苯并噻二唑衍生物）作为SnO 2基FPSC的缓冲层。结果表明，Y 6缓冲层可以提高SnO 2 ETL的电荷提取能力和弯曲稳定性。此外，钙钛矿薄膜的内应力也降低了。结果，SnO 2/Y 6基FPSC实现了20.09%的功率转换效率（PCE），并在曲率半径为8 mm的1000次弯曲循环后保持了其初始效率的80%以上，而SnO 2基器件在相同的弯曲循环后仅保留了其初始PCE的60%（18.60%）。此外，界面电荷提取也有效地改善结合减少缺陷密度后，纳入Y 6的SnO 2 ETL，如飞秒瞬态吸收（FS-TA）测量所揭示的。Y 6钝化层可以增强SnO 2 ETL在弯曲过程中的耐久性。SnO 2/Y 6基FPSC实现了20.09%的PCE，并在曲率半径为8 mm的1000次弯曲循环后保持其初始效率的80%以上，而SnO 2基器件在相同的弯曲循环后仅保持其初始PCE的60%（18.60%）。
Flexible perovskite solar cells (FPSCs) represent a promising technology in the development of next‐generation photovoltaic and optoelectronic devices. SnO2 electron transport layers (ETL) typically undergo significant cracking during the bending process of FPSCs, which can significantly compromise their charge transport properties. Herein, the semi‐planar non‐fullerene acceptor molecule Y6 (BT‐core‐based fused‐unit dithienothiophen [3,2‐b]‐pyrrolobenzothiadiazole derivative) is introduced as the buffer layer for SnO2‐based FPSCs. It is found that the Y6 buffer layer can enhance the ability of charge extraction and bending stability for SnO2 ETL. Moreover, the internal stress of perovskite films is also reduced. As a result, SnO2/Y6‐based FPSCs achieved a power conversion efficiency (PCE) of 20.09% and retained over 80% of their initial efficiency after 1000 bending cycles at a curvature radius of 8 mm, while SnO2‐based devices only retain 60% of their initial PCE (18.60%) upon the same bending cycles. In addition, the interfacial charge extraction is also effectively improved in conjunction with reduced defect density upon incorporation of Y6 on the SnO2 ETL, as revealed by femtosecond transient absorption (Fs‐TA) measurements. Y6 passivation layer can enhance SnO2 ETL durability during bending processes. The SnO2/Y6‐based FPSCs achieve a PCEof 20.09% and retain over 80% of their initial efficiency after 1000 bending cycles at a curvature radius of 8 mm, while SnO2‐based devices only retain 60% of their initial PCE (18.60%) upon the same bending cycles.
登录
查看更多内容
高效 CsPbIBr 2 钙钛矿太阳能电池的界面-改性-诱导梯度能带
影响因子：
27.8
作者：
Subhani, Waqas Siddique;Wang, Kai;Liu, Shengzhong (Frank)
通讯作者：
Liu, Shengzhong (Frank)
影响因子：
15
作者：
Kojima, Akihiro;Teshima, Kenjiro;Miyasaka, Tsutomu
通讯作者：
Miyasaka, Tsutomu
碳%20量子%20点/TiOx%20电子%20传输%20层%20Boosts%20效率%20of%20平面%20异质结%20钙钛矿%20太阳能%20电池%20至%2019%
影响因子：
10.8
作者：
Li, Hao;Shi, Weina;Yang, Yang
通讯作者：
Yang, Yang
使用 SnO2 增强电子提取，用于高效平面结构 HC(NH2)(2)PbI3 基钙钛矿太阳能电池
影响因子：
56.7
作者：
Jiang, Qi;Zhang, Liuqi;You, Jingbi
通讯作者：
You, Jingbi
影响因子：
56.9
作者：
Min, Hanul;Kim, Maengsuk;Seok, Sang Il
通讯作者：
Seok, Sang Il