Enhanced Efficiency and Stability of an Aqueous Lead-Nitrate-Based Organometallic Perovskite Solar Cell

Dipak V. Shinde; Limok Pyeon; Mingyuan Pei; Guan Woo Kim; Hoichang Yang; Taiho Park

doi:10.1021/acsami.7b01864

Enhanced Efficiency and Stability of an Aqueous Lead-Nitrate-Based Organometallic Perovskite Solar Cell

Dipak V. Shinde, Limok Pyeon, Mingyuan Pei, Guan Woo Kim, Hoichang Yang, Taiho Park

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

34 Scopus citations

Abstract

We investigate the stability of an active organometallic perovskite layer prepared from a two-step solution procedure, including spin coating of aqueous lead nitrate (Pb(NO₃)₂) as a Pb²⁺ source and sequential dipping into a methylammonium iodide (CH₃NH₃I) solution. The conversion of CH₃NH₃PbI₃ from a uniform Pb(NO₃)₂ layer generates PbI₂-free and large-grain perovskite crystallites owing to an intermediate ion-exchange reaction step, resulting in improved humidity resistance and, thereby, improved long-term stability with 93% of the initial power conversion efficiency (PCE) after a period of 20 days. The conventional fast-converted PbI₂-dimethylformamide solution system leaves small amounts of intrinsic PbI₂ residue on the resulting perovskite and MAPbI₃ crystallites with uncontrollable sizes. This accelerates the generation of PbI₂ and the decomposition of the perovskite layer, resulting in poor stability with less than 60% of the initial PCE after a period of 20 days.

Original language	English
Pages (from-to)	14023-14030
Number of pages	8
Journal	ACS applied materials & interfaces
Volume	9
Issue number	16
DOIs	https://doi.org/10.1021/acsami.7b01864
State	Published - 26 Apr 2017

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Publisher Copyright:
© 2017 American Chemical Society.

Keywords

aqueous
lead nitrate
perovskite
solar cell
stability

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10.1021/acsami.7b01864

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title = "Enhanced Efficiency and Stability of an Aqueous Lead-Nitrate-Based Organometallic Perovskite Solar Cell",

abstract = "We investigate the stability of an active organometallic perovskite layer prepared from a two-step solution procedure, including spin coating of aqueous lead nitrate (Pb(NO3)2) as a Pb2+ source and sequential dipping into a methylammonium iodide (CH3NH3I) solution. The conversion of CH3NH3PbI3 from a uniform Pb(NO3)2 layer generates PbI2-free and large-grain perovskite crystallites owing to an intermediate ion-exchange reaction step, resulting in improved humidity resistance and, thereby, improved long-term stability with 93% of the initial power conversion efficiency (PCE) after a period of 20 days. The conventional fast-converted PbI2-dimethylformamide solution system leaves small amounts of intrinsic PbI2 residue on the resulting perovskite and MAPbI3 crystallites with uncontrollable sizes. This accelerates the generation of PbI2 and the decomposition of the perovskite layer, resulting in poor stability with less than 60% of the initial PCE after a period of 20 days.",

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author = "Shinde, {Dipak V.} and Limok Pyeon and Mingyuan Pei and Kim, {Guan Woo} and Hoichang Yang and Taiho Park",

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T1 - Enhanced Efficiency and Stability of an Aqueous Lead-Nitrate-Based Organometallic Perovskite Solar Cell

AU - Shinde, Dipak V.

AU - Pyeon, Limok

AU - Pei, Mingyuan

AU - Kim, Guan Woo

AU - Yang, Hoichang

AU - Park, Taiho

PY - 2017/4/26

Y1 - 2017/4/26

N2 - We investigate the stability of an active organometallic perovskite layer prepared from a two-step solution procedure, including spin coating of aqueous lead nitrate (Pb(NO3)2) as a Pb2+ source and sequential dipping into a methylammonium iodide (CH3NH3I) solution. The conversion of CH3NH3PbI3 from a uniform Pb(NO3)2 layer generates PbI2-free and large-grain perovskite crystallites owing to an intermediate ion-exchange reaction step, resulting in improved humidity resistance and, thereby, improved long-term stability with 93% of the initial power conversion efficiency (PCE) after a period of 20 days. The conventional fast-converted PbI2-dimethylformamide solution system leaves small amounts of intrinsic PbI2 residue on the resulting perovskite and MAPbI3 crystallites with uncontrollable sizes. This accelerates the generation of PbI2 and the decomposition of the perovskite layer, resulting in poor stability with less than 60% of the initial PCE after a period of 20 days.

AB - We investigate the stability of an active organometallic perovskite layer prepared from a two-step solution procedure, including spin coating of aqueous lead nitrate (Pb(NO3)2) as a Pb2+ source and sequential dipping into a methylammonium iodide (CH3NH3I) solution. The conversion of CH3NH3PbI3 from a uniform Pb(NO3)2 layer generates PbI2-free and large-grain perovskite crystallites owing to an intermediate ion-exchange reaction step, resulting in improved humidity resistance and, thereby, improved long-term stability with 93% of the initial power conversion efficiency (PCE) after a period of 20 days. The conventional fast-converted PbI2-dimethylformamide solution system leaves small amounts of intrinsic PbI2 residue on the resulting perovskite and MAPbI3 crystallites with uncontrollable sizes. This accelerates the generation of PbI2 and the decomposition of the perovskite layer, resulting in poor stability with less than 60% of the initial PCE after a period of 20 days.

KW - aqueous

KW - lead nitrate

KW - perovskite

KW - solar cell

KW - stability

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DO - 10.1021/acsami.7b01864

M3 - Article

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AN - SCOPUS:85018831615

SN - 1944-8244

VL - 9

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EP - 14030

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

IS - 16

ER -

Enhanced Efficiency and Stability of an Aqueous Lead-Nitrate-Based Organometallic Perovskite Solar Cell

Abstract

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