Phase formation and local charge transport of lead-free CH3NH3Sn(I1−xBrx)3 (0 ≤ x ≤ 1)perovskite solar cells fabricated by solvent optimization

Bich Phuong Nguyen; Dongguen Shin; Hye Ri Jung; Juran Kim; Trang Thi Thu Nguyen; Seokhyun Yoon; Yeonjin Yi; William Jo

doi:10.1016/j.solener.2019.05.007

Phase formation and local charge transport of lead-free CH₃NH₃Sn(I_1−xBr_x)₃ (0 ≤ x ≤ 1)perovskite solar cells fabricated by solvent optimization

Bich Phuong Nguyen, Dongguen Shin, Hye Ri Jung, Juran Kim, Trang Thi Thu Nguyen, Seokhyun Yoon, Yeonjin Yi, William Jo

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The perovskite layer is the most crucial factor for the high performance tin-based perovskite. Herein, we investigate the effect of solvent on the morphology of perovskite films systematically. Dimethyl sulfoxide (DMSO)has been adopted as a high boiling point combined with the commonly used N,N-dimethylformamide (DMF)to control the rapid nucleation and retarding crystal growth. A pinhole-free MASnI₃ perovskite film with dense and large grains is obtained. By optimizing the solvent composition, multiple tin-based mixed iodine and bromine perovskite solar cells (MASn(I_1−xBr_x)₃ 0 ≤ x ≤ 1)were fabricated. The best photoconversion cell efficiency was obtained at x = 0.67, which yields to 3.20% compared to the original MASnI₃ (1.17%)due to the benefit band level alignment. The conductivity and the stability of the MASn(I_1−xBr_x)₃ perovskite device was carefully studied.

Original language	English
Pages (from-to)	136-144
Number of pages	9
Journal	Solar Energy
Volume	186
DOIs	https://doi.org/10.1016/j.solener.2019.05.007
State	Published - 1 Jul 2019

Bibliographical note

Publisher Copyright:
© 2019

Keywords

Conductive atomic force microscopy
Crystal growth
Lead-free perovskite
Morphology
Solvent engineering

Access to Document

10.1016/j.solener.2019.05.007

Cite this

@article{0c8f955a3b44448eb14087fe000fabfa,

title = "Phase formation and local charge transport of lead-free CH3NH3Sn(I1−xBrx)3 (0 ≤ x ≤ 1)perovskite solar cells fabricated by solvent optimization",

abstract = "The perovskite layer is the most crucial factor for the high performance tin-based perovskite. Herein, we investigate the effect of solvent on the morphology of perovskite films systematically. Dimethyl sulfoxide (DMSO)has been adopted as a high boiling point combined with the commonly used N,N-dimethylformamide (DMF)to control the rapid nucleation and retarding crystal growth. A pinhole-free MASnI3 perovskite film with dense and large grains is obtained. By optimizing the solvent composition, multiple tin-based mixed iodine and bromine perovskite solar cells (MASn(I1−xBrx)3 0 ≤ x ≤ 1)were fabricated. The best photoconversion cell efficiency was obtained at x = 0.67, which yields to 3.20% compared to the original MASnI3 (1.17%)due to the benefit band level alignment. The conductivity and the stability of the MASn(I1−xBrx)3 perovskite device was carefully studied.",

keywords = "Conductive atomic force microscopy, Crystal growth, Lead-free perovskite, Morphology, Solvent engineering",

author = "Nguyen, {Bich Phuong} and Dongguen Shin and Jung, {Hye Ri} and Juran Kim and Nguyen, {Trang Thi Thu} and Seokhyun Yoon and Yeonjin Yi and William Jo",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jul,

day = "1",

doi = "10.1016/j.solener.2019.05.007",

language = "English",

volume = "186",

pages = "136--144",

journal = "Solar Energy",

issn = "0038-092X",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Phase formation and local charge transport of lead-free CH3NH3Sn(I1−xBrx)3 (0 ≤ x ≤ 1)perovskite solar cells fabricated by solvent optimization

AU - Nguyen, Bich Phuong

AU - Shin, Dongguen

AU - Jung, Hye Ri

AU - Kim, Juran

AU - Nguyen, Trang Thi Thu

AU - Yoon, Seokhyun

AU - Yi, Yeonjin

AU - Jo, William

PY - 2019/7/1

Y1 - 2019/7/1

N2 - The perovskite layer is the most crucial factor for the high performance tin-based perovskite. Herein, we investigate the effect of solvent on the morphology of perovskite films systematically. Dimethyl sulfoxide (DMSO)has been adopted as a high boiling point combined with the commonly used N,N-dimethylformamide (DMF)to control the rapid nucleation and retarding crystal growth. A pinhole-free MASnI3 perovskite film with dense and large grains is obtained. By optimizing the solvent composition, multiple tin-based mixed iodine and bromine perovskite solar cells (MASn(I1−xBrx)3 0 ≤ x ≤ 1)were fabricated. The best photoconversion cell efficiency was obtained at x = 0.67, which yields to 3.20% compared to the original MASnI3 (1.17%)due to the benefit band level alignment. The conductivity and the stability of the MASn(I1−xBrx)3 perovskite device was carefully studied.

AB - The perovskite layer is the most crucial factor for the high performance tin-based perovskite. Herein, we investigate the effect of solvent on the morphology of perovskite films systematically. Dimethyl sulfoxide (DMSO)has been adopted as a high boiling point combined with the commonly used N,N-dimethylformamide (DMF)to control the rapid nucleation and retarding crystal growth. A pinhole-free MASnI3 perovskite film with dense and large grains is obtained. By optimizing the solvent composition, multiple tin-based mixed iodine and bromine perovskite solar cells (MASn(I1−xBrx)3 0 ≤ x ≤ 1)were fabricated. The best photoconversion cell efficiency was obtained at x = 0.67, which yields to 3.20% compared to the original MASnI3 (1.17%)due to the benefit band level alignment. The conductivity and the stability of the MASn(I1−xBrx)3 perovskite device was carefully studied.

KW - Conductive atomic force microscopy

KW - Crystal growth

KW - Lead-free perovskite

KW - Morphology

KW - Solvent engineering

UR - http://www.scopus.com/inward/record.url?scp=85065253616&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2019.05.007

DO - 10.1016/j.solener.2019.05.007

M3 - Article

AN - SCOPUS:85065253616

SN - 0038-092X

VL - 186

SP - 136

EP - 144

JO - Solar Energy

JF - Solar Energy

ER -