Ultra-stable 2D layered methylammonium cadmium trihalide perovskite photoelectrodes

Hsien Yi Hsu; Li Ji; Chengxi Zhang; Chun Hong Mak; Rugeng Liu; Tie Wang; Xingli Zou; Shao Yuan Leu; Edward T. Yu

doi:10.1039/c8tc02153h

Ultra-stable 2D layered methylammonium cadmium trihalide perovskite photoelectrodes

Hsien Yi Hsu, Li Ji, Chengxi Zhang, Chun Hong Mak, Rugeng Liu, Tie Wang, Xingli Zou, Shao Yuan Leu, Edward T. Yu

Research output: Journal article publication › Journal article › Academic research › peer-review

21 Citations (Scopus)

Abstract

For the first of time, we demonstrate that methylammonium cadmium halides show photoelectrochemical (PEC) response with excellent humidity and chemical resistance because the oxidation state of almost all cadmium compounds is +2. The photocurrent densities of two-dimensional (2D) layered (MA)₂CdCl₄ perovskites are about 0.30 mA cm^-2 under 100 mW cm^-2 irradiation. The interaction between these methylammonium cadmium halides and water vapor is studied by probing film morphology and characterizing single crystal structure. It is shown that H₂O is able to complex with the perovskite, forming a hydrate product with the molecular formula of MACd₃Cl₇·3H₂O upon humidity exposure. This causes a decrease in absorption and a recognizable change in the crystal structure of the material. When compared to methyl-ammonium lead iodide (MAPbI₃), the PEC stability of 2D layered (MA)₂CdCl₄ perovskites with BQ/BQ^- redox couples (where BQ is benzoquinone) in CH₂Cl₂ is enhanced from 50 hours to 600 hours, exhibiting an increase of 12 times.

Original language	English
Pages (from-to)	11552-11560
Number of pages	9
Journal	Journal of Materials Chemistry C
Volume	6
Issue number	43
DOIs	https://doi.org/10.1039/c8tc02153h
Publication status	Published - 1 Jan 2018

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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10.1039/c8tc02153h

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title = "Ultra-stable 2D layered methylammonium cadmium trihalide perovskite photoelectrodes",

abstract = "For the first of time, we demonstrate that methylammonium cadmium halides show photoelectrochemical (PEC) response with excellent humidity and chemical resistance because the oxidation state of almost all cadmium compounds is +2. The photocurrent densities of two-dimensional (2D) layered (MA)2CdCl4 perovskites are about 0.30 mA cm-2 under 100 mW cm-2 irradiation. The interaction between these methylammonium cadmium halides and water vapor is studied by probing film morphology and characterizing single crystal structure. It is shown that H2O is able to complex with the perovskite, forming a hydrate product with the molecular formula of MACd3Cl7·3H2O upon humidity exposure. This causes a decrease in absorption and a recognizable change in the crystal structure of the material. When compared to methyl-ammonium lead iodide (MAPbI3), the PEC stability of 2D layered (MA)2CdCl4 perovskites with BQ/BQ- redox couples (where BQ is benzoquinone) in CH2Cl2 is enhanced from 50 hours to 600 hours, exhibiting an increase of 12 times.",

author = "Hsu, {Hsien Yi} and Li Ji and Chengxi Zhang and Mak, {Chun Hong} and Rugeng Liu and Tie Wang and Xingli Zou and Leu, {Shao Yuan} and Yu, {Edward T.}",

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T1 - Ultra-stable 2D layered methylammonium cadmium trihalide perovskite photoelectrodes

AU - Hsu, Hsien Yi

AU - Ji, Li

AU - Zhang, Chengxi

AU - Mak, Chun Hong

AU - Liu, Rugeng

AU - Wang, Tie

AU - Zou, Xingli

AU - Leu, Shao Yuan

AU - Yu, Edward T.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - For the first of time, we demonstrate that methylammonium cadmium halides show photoelectrochemical (PEC) response with excellent humidity and chemical resistance because the oxidation state of almost all cadmium compounds is +2. The photocurrent densities of two-dimensional (2D) layered (MA)2CdCl4 perovskites are about 0.30 mA cm-2 under 100 mW cm-2 irradiation. The interaction between these methylammonium cadmium halides and water vapor is studied by probing film morphology and characterizing single crystal structure. It is shown that H2O is able to complex with the perovskite, forming a hydrate product with the molecular formula of MACd3Cl7·3H2O upon humidity exposure. This causes a decrease in absorption and a recognizable change in the crystal structure of the material. When compared to methyl-ammonium lead iodide (MAPbI3), the PEC stability of 2D layered (MA)2CdCl4 perovskites with BQ/BQ- redox couples (where BQ is benzoquinone) in CH2Cl2 is enhanced from 50 hours to 600 hours, exhibiting an increase of 12 times.

AB - For the first of time, we demonstrate that methylammonium cadmium halides show photoelectrochemical (PEC) response with excellent humidity and chemical resistance because the oxidation state of almost all cadmium compounds is +2. The photocurrent densities of two-dimensional (2D) layered (MA)2CdCl4 perovskites are about 0.30 mA cm-2 under 100 mW cm-2 irradiation. The interaction between these methylammonium cadmium halides and water vapor is studied by probing film morphology and characterizing single crystal structure. It is shown that H2O is able to complex with the perovskite, forming a hydrate product with the molecular formula of MACd3Cl7·3H2O upon humidity exposure. This causes a decrease in absorption and a recognizable change in the crystal structure of the material. When compared to methyl-ammonium lead iodide (MAPbI3), the PEC stability of 2D layered (MA)2CdCl4 perovskites with BQ/BQ- redox couples (where BQ is benzoquinone) in CH2Cl2 is enhanced from 50 hours to 600 hours, exhibiting an increase of 12 times.

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U2 - 10.1039/c8tc02153h

DO - 10.1039/c8tc02153h

M3 - Journal article

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SN - 2050-7534

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JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 43

ER -

Ultra-stable 2D layered methylammonium cadmium trihalide perovskite photoelectrodes

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