Unravelling the effects of cl addition in single step CH3NH3PbI3 perovskite solar cells

Natalia Yantara; Fang Yanan; Chen Shi; Herlina Arianita Dewi; Pablo P. Boix; Subodh G. Mhaisalkar; Nripan Mathews

doi:10.1021/cm502710r

Unravelling the effects of cl addition in single step CH₃NH₃PbI₃ perovskite solar cells

Natalia Yantara, Fang Yanan, Chen Shi, Herlina Arianita Dewi, Pablo P. Boix, Subodh G. Mhaisalkar, Nripan Mathews^*

^*Corresponding author for this work

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

90 Citations (Scopus)

Abstract

The effect of film morphology on the photovoltaic performances is illustrated. Pin holes free and uniform films could be formed by slowing down the crystallization rate through additional of excess CH₃NH₃⁺. Though better film coverage is obtained, the device series resistance increases as excess CH₃NH₃I increases. Thermogravimetric analysis confirms the presence of residual excess CH₃NH₃I in the final film. When chlorine is added to the CH₃NH₃⁺ rich system, CH₃NH₃Cl is formed and can easily sublime during annealing at 100 °C. A little trace of excess CH₃NH₃Cl can be detected from thermogravic analysis, and the residual chlorine atoms match with XPS reading.

Original language	English
Pages (from-to)	2309-2314
Number of pages	6
Journal	Chemistry of Materials
Volume	27
Issue number	7
DOIs	https://doi.org/10.1021/cm502710r
Publication status	Published - Apr 14 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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Access to Document

10.1021/cm502710r

Cite this

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title = "Unravelling the effects of cl addition in single step CH3NH3PbI3 perovskite solar cells",

abstract = "The effect of film morphology on the photovoltaic performances is illustrated. Pin holes free and uniform films could be formed by slowing down the crystallization rate through additional of excess CH3NH3+. Though better film coverage is obtained, the device series resistance increases as excess CH3NH3I increases. Thermogravimetric analysis confirms the presence of residual excess CH3NH3I in the final film. When chlorine is added to the CH3NH3+ rich system, CH3NH3Cl is formed and can easily sublime during annealing at 100 °C. A little trace of excess CH3NH3Cl can be detected from thermogravic analysis, and the residual chlorine atoms match with XPS reading.",

author = "Natalia Yantara and Fang Yanan and Chen Shi and Dewi, {Herlina Arianita} and Boix, {Pablo P.} and Mhaisalkar, {Subodh G.} and Nripan Mathews",

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T1 - Unravelling the effects of cl addition in single step CH3NH3PbI3 perovskite solar cells

AU - Yantara, Natalia

AU - Yanan, Fang

AU - Shi, Chen

AU - Dewi, Herlina Arianita

AU - Boix, Pablo P.

AU - Mhaisalkar, Subodh G.

AU - Mathews, Nripan

PY - 2015/4/14

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AB - The effect of film morphology on the photovoltaic performances is illustrated. Pin holes free and uniform films could be formed by slowing down the crystallization rate through additional of excess CH3NH3+. Though better film coverage is obtained, the device series resistance increases as excess CH3NH3I increases. Thermogravimetric analysis confirms the presence of residual excess CH3NH3I in the final film. When chlorine is added to the CH3NH3+ rich system, CH3NH3Cl is formed and can easily sublime during annealing at 100 °C. A little trace of excess CH3NH3Cl can be detected from thermogravic analysis, and the residual chlorine atoms match with XPS reading.

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