Trap-State Passivation by Nonvolatile Small Molecules with Carboxylic Acid Groups for Efficient Planar Perovskite Solar Cells

被引:50
作者
Guan, Lin [1 ]
Jiao, Nan [1 ]
Guo, Yiping [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Mat Bldg D,800 Dongchuan Rd, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
PERFORMANCE; STABILITY; LAYERS;
D O I
10.1021/acs.jpcc.9b02621
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
Trap-state passivation has been validated to efficiently improve the performance of perovskite solar cells. Small volatile molecules and polymers both have the ability to reduce the trap states in perovskite. Herein, we demonstrate the feasibility of passivation by nonvolatile small molecules with carboxylic acid groups such as benzoic acid, p-phthalic acid, and trimesic acid. They can obviously increase the fill factor of the photocurrent density-voltage curves. Furthermore, the relationship between the molecular structure and passivation effect is proposed by fixing the concentration of carboxylic acid groups. Trimesic-acid-doped perovskite solar cells significantly increase the power conversion efficiency from 12.52 +/- 0.67 to 14.51 +/- 0.81 (champion efficiency, 15.81%) under standard AM 1.5G illumination. Our work expands the chemical additives in perovskite and further demonstrates how the additive molecular structure influences the performance of solar cells.
引用
收藏
页码:14223 / 14228
页数:6
相关论文
共 31 条
[1]  
Bi DQ, 2016, NAT ENERGY, V1, DOI [10.1038/NENERGY.2016.142, 10.1038/nenergy.2016.142]
[2]  
Jiang Q, 2017, NAT ENERGY, V2, P1, DOI [10.1038/nenergy.2016.177, 10.1038/NENERGY.2016.177]
[3]   Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells [J].
Kojima, Akihiro ;
Teshima, Kenjiro ;
Shirai, Yasuo ;
Miyasaka, Tsutomu .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (17) :6050-+
[4]   Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites [J].
Lee, Michael M. ;
Teuscher, Joel ;
Miyasaka, Tsutomu ;
Murakami, Takurou N. ;
Snaith, Henry J. .
SCIENCE, 2012, 338 (6107) :643-647
[5]   Overcoming ultraviolet light instability of sensitized TiO2 with meso-superstructured organometal tri-halide perovskite solar cells [J].
Leijtens, Tomas ;
Eperon, Giles E. ;
Pathak, Sandeep ;
Abate, Antonio ;
Lee, Michael M. ;
Snaith, Henry J. .
NATURE COMMUNICATIONS, 2013, 4
[6]   Investigating the Role of Grain Boundaries in CZTS and CZTSSe Thin Film Solar Cells with Scanning Probe Microscopy [J].
Li, Joel B. ;
Chawla, Vardaan ;
Clemens, Bruce M. .
ADVANCED MATERIALS, 2012, 24 (06) :720-+
[7]   A vacuum flash-assisted solution process for high-efficiency large-area perovskite solar cells [J].
Li, Xiong ;
Bi, Dongqin ;
Yi, Chenyi ;
Decoppet, Jean-David ;
Luo, Jingshan ;
Zakeeruddin, Shaik Mohammed ;
Hagfeldt, Anders ;
Gratzel, Michael .
SCIENCE, 2016, 353 (6294) :58-62
[8]  
Li X, 2015, NAT CHEM, V7, P703, DOI [10.1038/nchem.2324, 10.1038/NCHEM.2324]
[9]   Efficient planar heterojunction perovskite solar cells by vapour deposition [J].
Liu, Mingzhen ;
Johnston, Michael B. ;
Snaith, Henry J. .
NATURE, 2013, 501 (7467) :395-+
[10]   HYDROGEN PASSIVATION OF GRAIN-BOUNDARY DEFECTS IN POLYCRYSTALLINE SILICON THIN-FILMS [J].
NICKEL, NH ;
JOHNSON, NM ;
JACKSON, WB .
APPLIED PHYSICS LETTERS, 1993, 62 (25) :3285-3287