Crystal Engineering for Low Defect Density and High Efficiency Hybrid Chemical Vapor Deposition Grown Perovskite Solar Cells

被引:82
作者
Ng, Annie [1 ]
Ren, Zhiwei [1 ]
Shen, Qtan [1 ]
Cheung, Sin Hang [2 ]
Gokkaya, Huseyin Cem [1 ]
So, Shu Kong [2 ]
Djurisic, Aleksandra B. [3 ]
Wan, Yangyang [4 ,5 ]
Wu, Xiaojun [4 ,5 ]
Surya, Charles [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hong Kong, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[3] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[4] Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei Natl Lab Phys Sci Microscale, Hefei 230000, Anhui, Peoples R China
[5] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230000, Anhui, Peoples R China
关键词
perovskites; solar cells; defects; passivation; growth ambient; cooling rates; crystallization; hybrid chemical vapor deposition; METHYLAMMONIUM LEAD IODIDE; LOW-FREQUENCY NOISE; HALIDE PEROVSKITES; MESOPOROUS TIO2; OPTICAL-ABSORPTION; PERFORMANCE; RECOMBINATION; PASSIVATION; HYSTERESIS; LIFETIMES;
D O I
10.1021/acsami.6b07513
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Synthesis of high quality perovskite absorber is a key factor in determining the performance of the solar cells. We demonstrate that hybrid chemical vapor deposition (HCVD) growth technique can provide high level of versatility and repeatability to ensure the optimal conditions for the growth of the perovskite films as well as potential for batch processing. It is found that the growth ambient and degree of crystallization of CH3NH3PbI3 (MAPI) have strong impact on the defect density of MAPI. We demonstrate that HCVD process with slow postdeposition cooling rate can significantly reduce the density of shallow and deep traps in the MAPI due to enhanced material crystallization, while a mixed O-2/N-2 carrier gas is effective in passivating both shallow and deep traps. By careful control of the perovskite growth process, a champion device with power conversion efficiency of 17.6% is achieved. Our work complements the existing theoretical studies on different types of trap states in MAPI and fills the gap on the theoretical analysis of the interaction between deep levels and oxygen. The experimental results are consistent with the theoretical predictions.
引用
收藏
页码:32805 / 32814
页数:10
相关论文
共 56 条
[1]   Strong Covalency-Induced Recombination Centers in Perovskite Solar Cell Material CH3NH3Pbl3 [J].
Agiorgousis, Michael L. ;
Sun, Yi-Yang ;
Zeng, Hao ;
Zhang, Shengbai .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (41) :14570-14575
[2]  
[Anonymous], KEY WORLD EN STAT
[3]  
[Anonymous], 2016, BP STAT REV WORLD EN
[4]   Charge Carrier Lifetimes Exceeding 15 μs in Methylammonium Lead Iodide Single Crystals [J].
Bi, Yu ;
Hutter, Eline M. ;
Fang, Yanjun ;
Dong, Qingfeng ;
Huang, Jinsong ;
Savenije, Tom J. .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2016, 7 (05) :923-928
[5]   Sequential deposition as a route to high-performance perovskite-sensitized solar cells [J].
Burschka, Julian ;
Pellet, Norman ;
Moon, Soo-Jin ;
Humphry-Baker, Robin ;
Gao, Peng ;
Nazeeruddin, Mohammad K. ;
Graetzel, Michael .
NATURE, 2013, 499 (7458) :316-+
[6]   The identification, characterization and mitigation of defect states in organic photovoltaic devices: a review and outlook [J].
Carr, John A. ;
Chaudhary, Sumit .
ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (12) :3414-3438
[7]   Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process [J].
Chen, Qi ;
Zhou, Huanping ;
Hong, Ziruo ;
Luo, Song ;
Duan, Hsin-Sheng ;
Wang, Hsin-Hua ;
Liu, Yongsheng ;
Li, Gang ;
Yang, Yang .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (02) :622-625
[8]   Structure of Methylammonium Lead Iodide Within Mesoporous Titanium Dioxide: Active Material in High-Performance Perovskite Solar Cells [J].
Choi, Joshua J. ;
Yang, Xiaohao ;
Norman, Zachariah M. ;
Billinge, Simon J. L. ;
Owen, Jonathan S. .
NANO LETTERS, 2014, 14 (01) :127-133
[9]   Intrinsic Thermal Instability of Methylammonium Lead Trihalide Perovskite [J].
Conings, Bert ;
Drijkoningen, Jeroen ;
Gauquelin, Nicolas ;
Babayigit, Aslihan ;
D'Haen, Jan ;
D'Olieslaeger, Lien ;
Ethirajan, Anitha ;
Verbeeck, Jo ;
Manca, Jean ;
Mosconi, Edoardo ;
De Angelis, Filippo ;
Boyen, Hans-Gerd .
ADVANCED ENERGY MATERIALS, 2015, 5 (15)
[10]   Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance [J].
De Wolf, Stefaan ;
Holovsky, Jakub ;
Moon, Soo-Jin ;
Loeper, Philipp ;
Niesen, Bjoern ;
Ledinsky, Martin ;
Haug, Franz-Josef ;
Yum, Jun-Ho ;
Ballif, Christophe .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (06) :1035-1039