Formation of large grain and compact CH3NH3Pb(I1-xBrx)3 Film by multisteps solvent postannealing for high-efficiency perovskite solar cells

Yuan Yu; Fan Zhang; Chengyuan Liu; Qinjun Sun; Zhanfeng Li; Yanxia Cui; Wei Qin; Fu Rong ZHU; Yuying Hao

doi:10.1109/JPHOTOV.2018.2820909

Formation of large grain and compact CH₃NH₃Pb(I_1-xBr_x)₃ Film by multisteps solvent postannealing for high-efficiency perovskite solar cells

Yuan Yu, Fan Zhang, Chengyuan Liu, Qinjun Sun, Zhanfeng Li, Yanxia Cui, Wei Qin, Fu Rong ZHU, Yuying Hao^*

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

8 Citations (Scopus)

Abstract

The reaction toward MA Pb(I_1-xBr_x)₃ by the perovskite precursor is difficult to form a continuous film over a large area. In this paper, we develop a multisteps solvent-postannealing method based on a high-coverage MAPbI₃ film a template for preparing uniform and compact MAPb(I_1-xBr_x)₃ film with film-through large grain and uniform distribution of Br elements. The formed MAPbI₃ film must be annealed in the mixture vapor of dimethyl sulfoxide and aqueous HBr to achieve the simultaneous modification of composition and crystallinity, and then it has to be repaired further using CH₃NH₂ vapor annealing to eliminate the defects of the film surface and crystal grain boundaries. The corresponding perovskite solar cells (PSCs) yield a maximum power conversion efficiency of 17.23% with an open-circuit voltage (V_oc) of 1.025 V, a short-circuit current (J_sc) of 20.88 2 and a fill factor (FF) of 80.54%, based on a structure of ITO/PEDOT:PSS/MAPb(I_1-x Br_x)₃/PC₆₁BM/Bphen/Ag, with an enhancement of 18% compared with that of the optimized MAPbI₃ PSCs because of the simultaneous increase in V_oc, J_sc, and FF. This paper provides a feasible and effective method to fabricate high-quality MAPb(I_1-x Br_x)₃ films for high-efficiency solar energy conversion devices.

Original language	English
Pages (from-to)	1017-1022
Number of pages	6
Journal	IEEE Journal of Photovoltaics
Volume	8
Issue number	4
DOIs	https://doi.org/10.1109/JPHOTOV.2018.2820909
Publication status	Published - Jul 2018

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

User-Defined Keywords

CH3NH2 vapor annealing
crystallinity
HBr-DMSO system
MAPb(IBr) film
perovskite solar cell

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/JPHOTOV.2018.2820909

Cite this

@article{454e174b1bfd45e2bb9e0f89d0820a79,

title = "Formation of large grain and compact CH3NH3Pb(I1-xBrx)3 Film by multisteps solvent postannealing for high-efficiency perovskite solar cells",

abstract = "The reaction toward MA Pb(I1-xBrx)3 by the perovskite precursor is difficult to form a continuous film over a large area. In this paper, we develop a multisteps solvent-postannealing method based on a high-coverage MAPbI3 film a template for preparing uniform and compact MAPb(I1-xBrx)3 film with film-through large grain and uniform distribution of Br elements. The formed MAPbI3 film must be annealed in the mixture vapor of dimethyl sulfoxide and aqueous HBr to achieve the simultaneous modification of composition and crystallinity, and then it has to be repaired further using CH3NH2 vapor annealing to eliminate the defects of the film surface and crystal grain boundaries. The corresponding perovskite solar cells (PSCs) yield a maximum power conversion efficiency of 17.23% with an open-circuit voltage (Voc) of 1.025 V, a short-circuit current (Jsc) of 20.88 2 and a fill factor (FF) of 80.54%, based on a structure of ITO/PEDOT:PSS/MAPb(I1-x Brx)3/PC61BM/Bphen/Ag, with an enhancement of 18% compared with that of the optimized MAPbI3 PSCs because of the simultaneous increase in Voc, Jsc, and FF. This paper provides a feasible and effective method to fabricate high-quality MAPb(I1-x Brx)3 films for high-efficiency solar energy conversion devices.",

keywords = "CH3NH2 vapor annealing, crystallinity, HBr-DMSO system, MAPb(IBr) film, perovskite solar cell",

author = "Yuan Yu and Fan Zhang and Chengyuan Liu and Qinjun Sun and Zhanfeng Li and Yanxia Cui and Wei Qin and ZHU, {Fu Rong} and Yuying Hao",

note = "Funding Information: Manuscript received January 4, 2018; revised March 17, 2018; accepted March 25, 2018. Date of publication April 25, 2018; date of current version June 19, 2018. This work was supported in part by the NSFC-Joint Fund of Shanxi Coal Based Low Carbon Nurturing Project under Grant U1710115, in part by the Key Research and Development (International Cooperation) Program of Shanxi under Grant 201603D421042, in part by the Platform and Base Special Project of Shanxi under Grant 201605D131038, and in part by the National Natural Scientific Foundation of China under Grant 61274056, Grant 61475109, and Grant 61571317. (Corresponding author: Yuying Hao.) Y. Yu, C. Liu, Q. Sun, Z. Li, Y. Cui, and Y. Hao are with the Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China (e-mail:, [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).",

year = "2018",

month = jul,

doi = "10.1109/JPHOTOV.2018.2820909",

language = "English",

volume = "8",

pages = "1017--1022",

journal = "IEEE Journal of Photovoltaics",

issn = "2156-3381",

publisher = "IEEE Electron Devices Society",

number = "4",

}

TY - JOUR

T1 - Formation of large grain and compact CH3NH3Pb(I1-xBrx)3 Film by multisteps solvent postannealing for high-efficiency perovskite solar cells

AU - Yu, Yuan

AU - Zhang, Fan

AU - Liu, Chengyuan

AU - Sun, Qinjun

AU - Li, Zhanfeng

AU - Cui, Yanxia

AU - Qin, Wei

AU - ZHU, Fu Rong

AU - Hao, Yuying

N1 - Funding Information: Manuscript received January 4, 2018; revised March 17, 2018; accepted March 25, 2018. Date of publication April 25, 2018; date of current version June 19, 2018. This work was supported in part by the NSFC-Joint Fund of Shanxi Coal Based Low Carbon Nurturing Project under Grant U1710115, in part by the Key Research and Development (International Cooperation) Program of Shanxi under Grant 201603D421042, in part by the Platform and Base Special Project of Shanxi under Grant 201605D131038, and in part by the National Natural Scientific Foundation of China under Grant 61274056, Grant 61475109, and Grant 61571317. (Corresponding author: Yuying Hao.) Y. Yu, C. Liu, Q. Sun, Z. Li, Y. Cui, and Y. Hao are with the Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China (e-mail:, [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).

PY - 2018/7

Y1 - 2018/7

N2 - The reaction toward MA Pb(I1-xBrx)3 by the perovskite precursor is difficult to form a continuous film over a large area. In this paper, we develop a multisteps solvent-postannealing method based on a high-coverage MAPbI3 film a template for preparing uniform and compact MAPb(I1-xBrx)3 film with film-through large grain and uniform distribution of Br elements. The formed MAPbI3 film must be annealed in the mixture vapor of dimethyl sulfoxide and aqueous HBr to achieve the simultaneous modification of composition and crystallinity, and then it has to be repaired further using CH3NH2 vapor annealing to eliminate the defects of the film surface and crystal grain boundaries. The corresponding perovskite solar cells (PSCs) yield a maximum power conversion efficiency of 17.23% with an open-circuit voltage (Voc) of 1.025 V, a short-circuit current (Jsc) of 20.88 2 and a fill factor (FF) of 80.54%, based on a structure of ITO/PEDOT:PSS/MAPb(I1-x Brx)3/PC61BM/Bphen/Ag, with an enhancement of 18% compared with that of the optimized MAPbI3 PSCs because of the simultaneous increase in Voc, Jsc, and FF. This paper provides a feasible and effective method to fabricate high-quality MAPb(I1-x Brx)3 films for high-efficiency solar energy conversion devices.

AB - The reaction toward MA Pb(I1-xBrx)3 by the perovskite precursor is difficult to form a continuous film over a large area. In this paper, we develop a multisteps solvent-postannealing method based on a high-coverage MAPbI3 film a template for preparing uniform and compact MAPb(I1-xBrx)3 film with film-through large grain and uniform distribution of Br elements. The formed MAPbI3 film must be annealed in the mixture vapor of dimethyl sulfoxide and aqueous HBr to achieve the simultaneous modification of composition and crystallinity, and then it has to be repaired further using CH3NH2 vapor annealing to eliminate the defects of the film surface and crystal grain boundaries. The corresponding perovskite solar cells (PSCs) yield a maximum power conversion efficiency of 17.23% with an open-circuit voltage (Voc) of 1.025 V, a short-circuit current (Jsc) of 20.88 2 and a fill factor (FF) of 80.54%, based on a structure of ITO/PEDOT:PSS/MAPb(I1-x Brx)3/PC61BM/Bphen/Ag, with an enhancement of 18% compared with that of the optimized MAPbI3 PSCs because of the simultaneous increase in Voc, Jsc, and FF. This paper provides a feasible and effective method to fabricate high-quality MAPb(I1-x Brx)3 films for high-efficiency solar energy conversion devices.

KW - CH3NH2 vapor annealing

KW - crystallinity

KW - HBr-DMSO system

KW - MAPb(IBr) film

KW - perovskite solar cell

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U2 - 10.1109/JPHOTOV.2018.2820909

DO - 10.1109/JPHOTOV.2018.2820909

M3 - Journal article

AN - SCOPUS:85045984030

SN - 2156-3381

VL - 8

SP - 1017

EP - 1022

JO - IEEE Journal of Photovoltaics

JF - IEEE Journal of Photovoltaics

IS - 4

ER -