Thickness effects of thermally evaporated C60 thin films on regular-type CH3NH3PbI3 based solar cells

Kun Mu Lee; Cheng Chiang Chen; Lung Chien Chen; Sheng Hsiung Chang; Kai Shiang Chen; Shih Chieh Yeh; Chin Ti Chen; Chun Guey Wu

doi:10.1016/j.solmat.2017.02.003

Thickness effects of thermally evaporated C₆₀ thin films on regular-type CH₃NH₃PbI₃ based solar cells

Kun Mu Lee, Cheng Chiang Chen, Lung Chien Chen, Sheng Hsiung Chang^*, Kai Shiang Chen, Shih Chieh Yeh, Chin Ti Chen, Chun Guey Wu

^*Corresponding author for this work

Department of Chemical and Materials Engineering

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

33 Scopus citations

Abstract

Comprehensive studies were carried out to explore the thickness-dependent characteristics of thermally evaporated C₆₀ thin films. The structural, optical, electronic and surface properties of the resultant C₆₀ thin films were analyzed using Raman scattering spectrometry, photoluminescence spectroscopy, absorbance spectroscopy, photoelectron emission spectrometry and water droplet contact angle measurement. The experimental results show that the thickness of the C₆₀ thin film has a decisive impact on the photovoltaic performance of CH₃NH₃PbI₃ based solar cells in terms of open-circuit voltage (V_OC), short-circuit current density (J_SC) and fill factor (FF). In the case of the 2.5 nm-thick C₆₀ film, the solar cells have the better V_OC and J_SC, as the results of the lower electron affinity and higher transparency. The FF of the solar cell is related to the coverage of C₆₀ on the transparent conductive electrode (TCE) and the CH₃NH₃PbI₃ perovskite continuity. Consequently, the photovoltaic performance can be expected to be improved by using a smooth TCE.

Original language	English
Pages (from-to)	13-18
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	164
DOIs	https://doi.org/10.1016/j.solmat.2017.02.003
State	Published - 01 05 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

C thin film
CHNHPbI
Contact angle
Solar cell

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10.1016/j.solmat.2017.02.003

Cite this

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title = "Thickness effects of thermally evaporated C60 thin films on regular-type CH3NH3PbI3 based solar cells",

abstract = "Comprehensive studies were carried out to explore the thickness-dependent characteristics of thermally evaporated C60 thin films. The structural, optical, electronic and surface properties of the resultant C60 thin films were analyzed using Raman scattering spectrometry, photoluminescence spectroscopy, absorbance spectroscopy, photoelectron emission spectrometry and water droplet contact angle measurement. The experimental results show that the thickness of the C60 thin film has a decisive impact on the photovoltaic performance of CH3NH3PbI3 based solar cells in terms of open-circuit voltage (VOC), short-circuit current density (JSC) and fill factor (FF). In the case of the 2.5 nm-thick C60 film, the solar cells have the better VOC and JSC, as the results of the lower electron affinity and higher transparency. The FF of the solar cell is related to the coverage of C60 on the transparent conductive electrode (TCE) and the CH3NH3PbI3 perovskite continuity. Consequently, the photovoltaic performance can be expected to be improved by using a smooth TCE.",

keywords = "C thin film, CHNHPbI, Contact angle, Solar cell",

author = "Lee, {Kun Mu} and Chen, {Cheng Chiang} and Chen, {Lung Chien} and Chang, {Sheng Hsiung} and Chen, {Kai Shiang} and Yeh, {Shih Chieh} and Chen, {Chin Ti} and Wu, {Chun Guey}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = may,

day = "1",

doi = "10.1016/j.solmat.2017.02.003",

language = "英语",

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T1 - Thickness effects of thermally evaporated C60 thin films on regular-type CH3NH3PbI3 based solar cells

AU - Lee, Kun Mu

AU - Chen, Cheng Chiang

AU - Chen, Lung Chien

AU - Chang, Sheng Hsiung

AU - Chen, Kai Shiang

AU - Yeh, Shih Chieh

AU - Chen, Chin Ti

AU - Wu, Chun Guey

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Comprehensive studies were carried out to explore the thickness-dependent characteristics of thermally evaporated C60 thin films. The structural, optical, electronic and surface properties of the resultant C60 thin films were analyzed using Raman scattering spectrometry, photoluminescence spectroscopy, absorbance spectroscopy, photoelectron emission spectrometry and water droplet contact angle measurement. The experimental results show that the thickness of the C60 thin film has a decisive impact on the photovoltaic performance of CH3NH3PbI3 based solar cells in terms of open-circuit voltage (VOC), short-circuit current density (JSC) and fill factor (FF). In the case of the 2.5 nm-thick C60 film, the solar cells have the better VOC and JSC, as the results of the lower electron affinity and higher transparency. The FF of the solar cell is related to the coverage of C60 on the transparent conductive electrode (TCE) and the CH3NH3PbI3 perovskite continuity. Consequently, the photovoltaic performance can be expected to be improved by using a smooth TCE.

AB - Comprehensive studies were carried out to explore the thickness-dependent characteristics of thermally evaporated C60 thin films. The structural, optical, electronic and surface properties of the resultant C60 thin films were analyzed using Raman scattering spectrometry, photoluminescence spectroscopy, absorbance spectroscopy, photoelectron emission spectrometry and water droplet contact angle measurement. The experimental results show that the thickness of the C60 thin film has a decisive impact on the photovoltaic performance of CH3NH3PbI3 based solar cells in terms of open-circuit voltage (VOC), short-circuit current density (JSC) and fill factor (FF). In the case of the 2.5 nm-thick C60 film, the solar cells have the better VOC and JSC, as the results of the lower electron affinity and higher transparency. The FF of the solar cell is related to the coverage of C60 on the transparent conductive electrode (TCE) and the CH3NH3PbI3 perovskite continuity. Consequently, the photovoltaic performance can be expected to be improved by using a smooth TCE.

KW - C thin film

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