Functionalized CNTs as Effective Additives to Improve the Efficiency of Perovskite Solar Cells

被引：24
作者：
Ma, Xiaotong [2 ]
Zhang, Teng [1 ]
Zhao, Baohua [2 ]
Liu, Chengben [2 ]
Li, Xinmei [2 ]
Liu, Heyuan [3 ]
Yang, Guangwu [1 ]
Chen, Yanli [1 ]
Jiang, Lilin [1 ,4 ]
Li, Xiyou [1 ]
机构：
[1] China Univ Petr East China, Sch Mat Sci & Engn, Qingdao 266580, Peoples R China
[2] China Univ Petr East China, Coll Sci, Qingdao 266580, Peoples R China
[3] China Univ Petr East China, Inst New Energy, Qingdao 266580, Peoples R China
[4] Hezhou Univ, Sch Artificial Intelligence, Hezhou 542800, Peoples R China
来源：
ACS APPLIED ENERGY MATERIALS | 2020年 / 3卷 / 12期
关键词：
perovskite solar cell; carbon nanotubes; crystal nucleation and growth; carrier transfer; defect density;
D O I：
10.1021/acsaem.0c01675
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High-quality and uniform perovskite films are the first step toward high-performance perovskite solar cells (PSCs). Adding additives to regulating the film formation process is proved to be an efficient way to acquire high-quality perovskite films. In this study, we use functionalized carbon nanotubes (CNTs) as effective additives to improve the power conversion efficiency (PCE) of PSCs. Three kinds of CNTs, namely, pristine CNTs, amino-group-functionalized CNTs (NH2-CNTs), and carboxyl-group-functionalized CNTs (COOH-CNTs) are selected. The PCE of PSCs doped with pristine CNTs (13.91%) drops compared with that of a control device (16.56%), while the PCE increases to 17.47% for NH2-CNT-doped PSCs and 17.75% for COOH-CNT-doped PSCs. A detailed study shows that both NH2-CNTs and COOH-CNTs can facilitate the crystallization of the perovskite films. Compared with a control film, the hole mobility of the perovskite films can be increased by 1 order of magnitude in a COOH-CNT-doped perovskite film. This contributes to better carrier transportation in PSCs. After optimizing the length and doping concentration of the COOH-CNTs, the PCE for PSCs doped with COOH-CNTs steadily improves to 18.68%. Furthermore, the stability of PSCs has also been improved with COOH-CNT-doped perovskite films. Our study provides insightful hints for using functionalized carbon-based materials to develop high-performance perovskite-based optoelectronic devices.
引用
收藏
页码：11674 / 11680
页数：7
相关论文
共 56 条
[1]  
[Anonymous], SCIENCE
[2]   Evidence for reduced charge recombination in carbon nanotube/perovskite-based active layers [J].
Bag, Monojit ;
Renna, Lawrence A. ;
Jeong, Seung Pyo ;
Han, Xu ;
Cutting, Christie L. ;
Maroudas, Dimitrios ;
Venkataraman, D. .
CHEMICAL PHYSICS LETTERS, 2016, 662 :35-41
[3]   A pure and stable intermediate phase is key to growing aligned and vertically monolithic perovskite crystals for efficient PIN planar perovskite solar cells with high processibility and stability [J].
Bai, Yang ;
Xiao, Shuang ;
Hu, Chen ;
Zhang, Teng ;
Meng, Xiangyue ;
Li, Qiang ;
Yang, Yinglong ;
Wong, Kam Sing ;
Chen, Haining ;
Yang, Shihe .
NANO ENERGY, 2017, 34 :58-68
[4]   Effects of a Molecular Monolayer Modification of NiO Nanocrystal Layer Surfaces on Perovskite Crystallization and Interface Contact toward Faster Hole Extraction and Higher Photovoltaic Performance [J].
Bai, Yang ;
Chen, Haining ;
Xiao, Shuang ;
Xue, Qifan ;
Zhang, Teng ;
Zhu, Zonglong ;
Li, Qiang ;
Hu, Chen ;
Yang, Yun ;
Hu, Zhicheng ;
Huang, Fei ;
Wong, Kam Sing ;
Yip, Hin-Lap ;
Yang, Shihe .
ADVANCED FUNCTIONAL MATERIALS, 2016, 26 (17) :2950-2958
[5]  
Best Research-Cell Efficiency Chart.pdf, THIS PLOT IS COURTES
[6]   Non-wetting surface-driven high-aspect-ratio crystalline grain growth for efficient hybrid perovskite solar cells [J].
Bi, Cheng ;
Wang, Qi ;
Shao, Yuchuan ;
Yuan, Yongbo ;
Xiao, Zhengguo ;
Huang, Jinsong .
NATURE COMMUNICATIONS, 2015, 6
[7]  
Bi DQ, 2016, NAT ENERGY, V1, DOI [10.1038/nenergy.2016.142, 10.1038/NENERGY.2016.142]
[8]   Ionic Additive Engineering Toward High-Efficiency Perovskite Solar Cells with Reduced Grain Boundaries and Trap Density [J].
Cai, Feilong ;
Yan, Yu ;
Yao, Jiaxu ;
Wang, Pang ;
Wang, Hui ;
Gurney, Robert S. ;
Liu, Dan ;
Wang, Tao .
ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (34)
[9]   Solvent Engineering Boosts the Efficiency of Paintable Carbon-Based Perovskite Solar Cells to Beyond 14% [J].
Chen, Haining ;
Wei, Zhanhua ;
He, Hexiang ;
Zheng, Xiaoli ;
Wong, Kam Sing ;
Yang, Shihe .
ADVANCED ENERGY MATERIALS, 2016, 6 (08)
[10]   The Role of Synthesis Parameters on Crystallization and Grain Size in Hybrid Halide Perovskite Solar Cells [J].
Chen, Jianyou ;
Song, Jinkui ;
Huang, Feihong ;
Li, Hao ;
Liu, Shuangshuang ;
Wang, Mingkui ;
Shen, Yan .
JOURNAL OF PHYSICAL CHEMISTRY C, 2017, 121 (32) :17053-17061
123456