INSTRINSIC STABILITY ENHANCEMENT AND IONIC MIGRATION MITIGATION BY FLUORINATED CATIONS INCORPORATION IN HYBRID LEAD HALIDE PEROVSKITES

Fadwa El-Mellouhi; Nouar Tabet; Fahhud Hussain Alharbi; Abdelhak Belaidi; Belabbes Merzougui; Sergey Rashkeev

INSTRINSIC STABILITY ENHANCEMENT AND IONIC MIGRATION MITIGATION BY FLUORINATED CATIONS INCORPORATION IN HYBRID LEAD HALIDE PEROVSKITES

Fadwa El-Mellouhi (Inventor), Nouar Tabet (Inventor), Fahhud Hussain Alharbi (Inventor), Abdelhak Belaidi (Inventor), Belabbes Merzougui (Inventor), Sergey Rashkeev (Inventor)

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Research output: Patent

Abstract

Disclosed is a method of enhancing thermodynamic stability of a hybrid organic inorganic perovskite through a partial fluorination of CH3NH3+ cation. The method identifies that optimal stability of perovskite material can be reached with low controlled concentration of modified fluorinated cations, which has a tendency to stabilize the material due to the strengthening of some initially weak hydrogen bonds between MA+ cations and surrounding lead-iodide framework. Fluorination also reduces significantly the iodine vacancy mediated diffusion in the perovskite under applied bias voltage.

Original language	English
Patent number	US2019287734
IPC	H01L 51/ 00 A I
Priority date	13/03/19
Publication status	Published - 19 Sept 2019

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title = "INSTRINSIC STABILITY ENHANCEMENT AND IONIC MIGRATION MITIGATION BY FLUORINATED CATIONS INCORPORATION IN HYBRID LEAD HALIDE PEROVSKITES",

abstract = "Disclosed is a method of enhancing thermodynamic stability of a hybrid organic inorganic perovskite through a partial fluorination of CH3NH3+ cation. The method identifies that optimal stability of perovskite material can be reached with low controlled concentration of modified fluorinated cations, which has a tendency to stabilize the material due to the strengthening of some initially weak hydrogen bonds between MA+ cations and surrounding lead-iodide framework. Fluorination also reduces significantly the iodine vacancy mediated diffusion in the perovskite under applied bias voltage.",

author = "Fadwa El-Mellouhi and Nouar Tabet and Alharbi, \{Fahhud Hussain\} and Abdelhak Belaidi and Belabbes Merzougui and Sergey Rashkeev",

year = "2019",

month = sep,

day = "19",

language = "English",

type = "Patent",

note = "US2019287734; H01L 51/ 00 A I",

}

TY - PAT

T1 - INSTRINSIC STABILITY ENHANCEMENT AND IONIC MIGRATION MITIGATION BY FLUORINATED CATIONS INCORPORATION IN HYBRID LEAD HALIDE PEROVSKITES

AU - El-Mellouhi, Fadwa

AU - Tabet, Nouar

AU - Alharbi, Fahhud Hussain

AU - Belaidi, Abdelhak

AU - Merzougui, Belabbes

AU - Rashkeev, Sergey

PY - 2019/9/19

Y1 - 2019/9/19

N2 - Disclosed is a method of enhancing thermodynamic stability of a hybrid organic inorganic perovskite through a partial fluorination of CH3NH3+ cation. The method identifies that optimal stability of perovskite material can be reached with low controlled concentration of modified fluorinated cations, which has a tendency to stabilize the material due to the strengthening of some initially weak hydrogen bonds between MA+ cations and surrounding lead-iodide framework. Fluorination also reduces significantly the iodine vacancy mediated diffusion in the perovskite under applied bias voltage.

AB - Disclosed is a method of enhancing thermodynamic stability of a hybrid organic inorganic perovskite through a partial fluorination of CH3NH3+ cation. The method identifies that optimal stability of perovskite material can be reached with low controlled concentration of modified fluorinated cations, which has a tendency to stabilize the material due to the strengthening of some initially weak hydrogen bonds between MA+ cations and surrounding lead-iodide framework. Fluorination also reduces significantly the iodine vacancy mediated diffusion in the perovskite under applied bias voltage.

M3 - Patent

M1 - US2019287734

ER -

INSTRINSIC STABILITY ENHANCEMENT AND IONIC MIGRATION MITIGATION BY FLUORINATED CATIONS INCORPORATION IN HYBRID LEAD HALIDE PEROVSKITES

Abstract

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