Robust Stability of Efficient Lead-Free Formamidinium Tin Iodide Perovskite Solar Cells Realized by Structural Regulation

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Robust Stability of Efficient Lead-Free Formamidinium Tin Iodide Perovskite Solar Cells Realized by Structural Regulation. / Gao, Weiyin; Ran, Chenxin; Li, Jingrui; Dong, Hua; Jiao, Bo; Zhang, Lijun; Lan, Xuguang; Hou, Xun; Wu, Zhaoxin.

In: Journal of Physical Chemistry Letters, Vol. 9, No. 24, 20.12.2018, p. 6999-7006.

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Gao, Weiyin ; Ran, Chenxin ; Li, Jingrui ; Dong, Hua ; Jiao, Bo ; Zhang, Lijun ; Lan, Xuguang ; Hou, Xun ; Wu, Zhaoxin. / Robust Stability of Efficient Lead-Free Formamidinium Tin Iodide Perovskite Solar Cells Realized by Structural Regulation. In: Journal of Physical Chemistry Letters. 2018 ; Vol. 9, No. 24. pp. 6999-7006.

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@article{a52f58a26e4943c7981306bd24cdfdec,
title = "Robust Stability of Efficient Lead-Free Formamidinium Tin Iodide Perovskite Solar Cells Realized by Structural Regulation",
abstract = "The instability issue of Pb-free Sn-based perovskite is one of the biggest challenges for its application in optoelectronic devices. Herein, a structural regulation strategy is demonstrated to regulate the geometric symmetry of formamidiniumtin iodide (FASnI3) perovskite. Experimental and theoretical works show that the introduction of cesium cation (Cs+) could improve the geometric symmetry, suppress the oxidation of Sn2+, and enhance the thermodynamical structural stability of FASnI3. As a result, the inverted planar Cs-doped FASnI3-based perovskite solar cell (PSC) is shown to maintain 90{\%} of its initial power-conversion efficiency (PCE) after 2000 h stored in N2, which is the best durability to date for 3D Sn-based PSCs. Most importantly, the air, thermal, and illumination stabilities of the PSCs are all improved after Cs doping. The PCE of the Cs-doped PSC shows a 63{\%} increase compared to that of the control device (from 3.74{\%} to 6.08{\%}) due to the improved quality of the Cs-doped FASnI3 film.",
author = "Weiyin Gao and Chenxin Ran and Jingrui Li and Hua Dong and Bo Jiao and Lijun Zhang and Xuguang Lan and Xun Hou and Zhaoxin Wu",
year = "2018",
month = "12",
day = "20",
doi = "10.1021/acs.jpclett.8b03194",
language = "English",
volume = "9",
pages = "6999--7006",
journal = "Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "24",

}

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TY - JOUR

T1 - Robust Stability of Efficient Lead-Free Formamidinium Tin Iodide Perovskite Solar Cells Realized by Structural Regulation

AU - Gao, Weiyin

AU - Ran, Chenxin

AU - Li, Jingrui

AU - Dong, Hua

AU - Jiao, Bo

AU - Zhang, Lijun

AU - Lan, Xuguang

AU - Hou, Xun

AU - Wu, Zhaoxin

PY - 2018/12/20

Y1 - 2018/12/20

N2 - The instability issue of Pb-free Sn-based perovskite is one of the biggest challenges for its application in optoelectronic devices. Herein, a structural regulation strategy is demonstrated to regulate the geometric symmetry of formamidiniumtin iodide (FASnI3) perovskite. Experimental and theoretical works show that the introduction of cesium cation (Cs+) could improve the geometric symmetry, suppress the oxidation of Sn2+, and enhance the thermodynamical structural stability of FASnI3. As a result, the inverted planar Cs-doped FASnI3-based perovskite solar cell (PSC) is shown to maintain 90% of its initial power-conversion efficiency (PCE) after 2000 h stored in N2, which is the best durability to date for 3D Sn-based PSCs. Most importantly, the air, thermal, and illumination stabilities of the PSCs are all improved after Cs doping. The PCE of the Cs-doped PSC shows a 63% increase compared to that of the control device (from 3.74% to 6.08%) due to the improved quality of the Cs-doped FASnI3 film.

AB - The instability issue of Pb-free Sn-based perovskite is one of the biggest challenges for its application in optoelectronic devices. Herein, a structural regulation strategy is demonstrated to regulate the geometric symmetry of formamidiniumtin iodide (FASnI3) perovskite. Experimental and theoretical works show that the introduction of cesium cation (Cs+) could improve the geometric symmetry, suppress the oxidation of Sn2+, and enhance the thermodynamical structural stability of FASnI3. As a result, the inverted planar Cs-doped FASnI3-based perovskite solar cell (PSC) is shown to maintain 90% of its initial power-conversion efficiency (PCE) after 2000 h stored in N2, which is the best durability to date for 3D Sn-based PSCs. Most importantly, the air, thermal, and illumination stabilities of the PSCs are all improved after Cs doping. The PCE of the Cs-doped PSC shows a 63% increase compared to that of the control device (from 3.74% to 6.08%) due to the improved quality of the Cs-doped FASnI3 film.

UR - http://www.scopus.com/inward/record.url?scp=85058076988&partnerID=8YFLogxK

U2 - 10.1021/acs.jpclett.8b03194

DO - 10.1021/acs.jpclett.8b03194

M3 - Article

AN - SCOPUS:85058076988

VL - 9

SP - 6999

EP - 7006

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 24

ER -

ID: 30560975