Improving the efficiency of CH3NH3PbI3 based photovoltaics by tuning the work function of the PEDOT: PSS hole transport layer

Sheng Hsiung Chang; Kuen Feng Lin; Kuo Yuan Chiu; Chia Lung Tsai; Hsin Ming Cheng; Shih Chieh Yeh; Wen Ti Wu; Wei Nien Chen; Chin Ti Chen; Sheng Hui Chen; Chun Guey Wu

doi:10.1016/j.solener.2015.10.018

Improving the efficiency of CH₃NH₃PbI₃ based photovoltaics by tuning the work function of the PEDOT: PSS hole transport layer

Sheng Hsiung Chang, Kuen Feng Lin, Kuo Yuan Chiu, Chia Lung Tsai, Hsin Ming Cheng, Shih Chieh Yeh, Wen Ti Wu, Wei Nien Chen, Chin Ti Chen, Sheng Hui Chen, Chun Guey Wu

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

43 Scopus citations

Abstract

The open-circuit voltage of CH₃NH₃PbI₃ based photovoltaics was enhanced from 0.77 V to 0.9V, which resulted in an improvement of the average power conversion efficiency from 5.63% to 11.74% achieved by tuning the work function of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer. The higher work function of the PEDOT:PSS (1:20wt%) thin film, as compared to the PEDOT:PSS (1:6wt%) and PEDOT:PSS (1:2.5wt%) thin films, was observed using photoelectron spectrometer. The carrier density of PEDOT was obtained by analyzing the transmittance spectrum of PEDOT:PSS/glass with the transfer matrix method. The Drude model can be used to explain the increased work function of the PEDOT:PSS thin film obtained by decreasing the ratio of PEDOT to PSS. The increased carrier density of the PEDOT in PEDOT:PSS thin films originated from conformational changes in the PEDOT chains as confirmed by Raman scattering spectroscopy.

Original language	English
Pages (from-to)	892-899
Number of pages	8
Journal	Solar Energy
Volume	122
DOIs	https://doi.org/10.1016/j.solener.2015.10.018
State	Published - 1 Dec 2015

Keywords

Organometal halide perovskite
PEDOT:PSS
Photovoltaics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solener.2015.10.018

Cite this

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title = "Improving the efficiency of CH3NH3PbI3 based photovoltaics by tuning the work function of the PEDOT: PSS hole transport layer",

abstract = "The open-circuit voltage of CH3NH3PbI3 based photovoltaics was enhanced from 0.77 V to 0.9V, which resulted in an improvement of the average power conversion efficiency from 5.63% to 11.74% achieved by tuning the work function of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer. The higher work function of the PEDOT:PSS (1:20wt%) thin film, as compared to the PEDOT:PSS (1:6wt%) and PEDOT:PSS (1:2.5wt%) thin films, was observed using photoelectron spectrometer. The carrier density of PEDOT was obtained by analyzing the transmittance spectrum of PEDOT:PSS/glass with the transfer matrix method. The Drude model can be used to explain the increased work function of the PEDOT:PSS thin film obtained by decreasing the ratio of PEDOT to PSS. The increased carrier density of the PEDOT in PEDOT:PSS thin films originated from conformational changes in the PEDOT chains as confirmed by Raman scattering spectroscopy.",

keywords = "Organometal halide perovskite, PEDOT:PSS, Photovoltaics",

author = "Chang, {Sheng Hsiung} and Lin, {Kuen Feng} and Chiu, {Kuo Yuan} and Tsai, {Chia Lung} and Cheng, {Hsin Ming} and Yeh, {Shih Chieh} and Wu, {Wen Ti} and Chen, {Wei Nien} and Chen, {Chin Ti} and Chen, {Sheng Hui} and Wu, {Chun Guey}",

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TY - JOUR

T1 - Improving the efficiency of CH3NH3PbI3 based photovoltaics by tuning the work function of the PEDOT

T2 - PSS hole transport layer

AU - Chang, Sheng Hsiung

AU - Lin, Kuen Feng

AU - Chiu, Kuo Yuan

AU - Tsai, Chia Lung

AU - Cheng, Hsin Ming

AU - Yeh, Shih Chieh

AU - Wu, Wen Ti

AU - Chen, Wei Nien

AU - Chen, Chin Ti

AU - Chen, Sheng Hui

AU - Wu, Chun Guey

PY - 2015/12/1

Y1 - 2015/12/1

N2 - The open-circuit voltage of CH3NH3PbI3 based photovoltaics was enhanced from 0.77 V to 0.9V, which resulted in an improvement of the average power conversion efficiency from 5.63% to 11.74% achieved by tuning the work function of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer. The higher work function of the PEDOT:PSS (1:20wt%) thin film, as compared to the PEDOT:PSS (1:6wt%) and PEDOT:PSS (1:2.5wt%) thin films, was observed using photoelectron spectrometer. The carrier density of PEDOT was obtained by analyzing the transmittance spectrum of PEDOT:PSS/glass with the transfer matrix method. The Drude model can be used to explain the increased work function of the PEDOT:PSS thin film obtained by decreasing the ratio of PEDOT to PSS. The increased carrier density of the PEDOT in PEDOT:PSS thin films originated from conformational changes in the PEDOT chains as confirmed by Raman scattering spectroscopy.

AB - The open-circuit voltage of CH3NH3PbI3 based photovoltaics was enhanced from 0.77 V to 0.9V, which resulted in an improvement of the average power conversion efficiency from 5.63% to 11.74% achieved by tuning the work function of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer. The higher work function of the PEDOT:PSS (1:20wt%) thin film, as compared to the PEDOT:PSS (1:6wt%) and PEDOT:PSS (1:2.5wt%) thin films, was observed using photoelectron spectrometer. The carrier density of PEDOT was obtained by analyzing the transmittance spectrum of PEDOT:PSS/glass with the transfer matrix method. The Drude model can be used to explain the increased work function of the PEDOT:PSS thin film obtained by decreasing the ratio of PEDOT to PSS. The increased carrier density of the PEDOT in PEDOT:PSS thin films originated from conformational changes in the PEDOT chains as confirmed by Raman scattering spectroscopy.

KW - Organometal halide perovskite

KW - PEDOT:PSS

KW - Photovoltaics

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