Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

Cheng Chiang Chen; Sheng Hsiung Chang; Lung Chien Chen; Feng Sheng Kao; Hsin Ming Cheng; Shih Chieh Yeh; Chin Ti Chen; Wen Ti Wu; Zong Liang Tseng; Chuan Lung Chuang; Chun Guey Wu

doi:10.1016/j.solener.2016.05.032

Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

Cheng Chiang Chen
, Sheng Hsiung Chang
, Lung Chien Chen
, Feng Sheng Kao
, Hsin Ming Cheng
, Shih Chieh Yeh
, Chin Ti Chen
, Wen Ti Wu
, Zong Liang Tseng
, Chuan Lung Chuang
, Chun Guey Wu

Department of Electro-Optical Engineering

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

36 Scopus citations

Abstract

A phase-pure mixed-organic-cation perovskite absorber (MOC-PA) was fabricated by a one-step spin-coating process with a toluene washing treatment, and the structural, optical and excitonic properties of the resultant MOC-PAs were then characterized by scanning electron microscopy, X-ray diffractometry, absorbance spectrometer, and time-resolved photoluminescence. The averaged power conversion efficiency (PCE) of inverted phase-pure MOC-PA based photovoltaics could be improved from 12.21% to 13.28% by tailing the surface roughness of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film from 1.43 nm to 1.84 nm. The improved PCE is mainly due to the increased short-circuit current density (J_SC) which is attributed to the improvement of the exciton dissociation, as confirmed by photoluminescence experiments. In addition, the experimental results indicate that the PCE can be further improved by increasing the crystallinity of MOC-PAs.

Original language	English
Pages (from-to)	445-451
Number of pages	7
Journal	Solar Energy
Volume	134
DOIs	https://doi.org/10.1016/j.solener.2016.05.032
State	Published - 1 Sep 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Mixed-organic-cation perovskite absorbers
Nanosecond time-resolved photoluminescence
PEDOT:PSS thin films
Photovoltaics

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10.1016/j.solener.2016.05.032

Cite this

Chen, C. C., Chang, S. H., Chen, L. C., Kao, F. S., Cheng, H. M., Yeh, S. C., Chen, C. T., Wu, W. T., Tseng, Z. L., Chuang, C. L., & Wu, C. G. (2016). Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film. Solar Energy, 134, 445-451. https://doi.org/10.1016/j.solener.2016.05.032

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title = "Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film",

abstract = "A phase-pure mixed-organic-cation perovskite absorber (MOC-PA) was fabricated by a one-step spin-coating process with a toluene washing treatment, and the structural, optical and excitonic properties of the resultant MOC-PAs were then characterized by scanning electron microscopy, X-ray diffractometry, absorbance spectrometer, and time-resolved photoluminescence. The averaged power conversion efficiency (PCE) of inverted phase-pure MOC-PA based photovoltaics could be improved from 12.21\% to 13.28\% by tailing the surface roughness of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film from 1.43 nm to 1.84 nm. The improved PCE is mainly due to the increased short-circuit current density (JSC) which is attributed to the improvement of the exciton dissociation, as confirmed by photoluminescence experiments. In addition, the experimental results indicate that the PCE can be further improved by increasing the crystallinity of MOC-PAs.",

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AU - Yeh, Shih Chieh

AU - Chen, Chin Ti

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AB - A phase-pure mixed-organic-cation perovskite absorber (MOC-PA) was fabricated by a one-step spin-coating process with a toluene washing treatment, and the structural, optical and excitonic properties of the resultant MOC-PAs were then characterized by scanning electron microscopy, X-ray diffractometry, absorbance spectrometer, and time-resolved photoluminescence. The averaged power conversion efficiency (PCE) of inverted phase-pure MOC-PA based photovoltaics could be improved from 12.21% to 13.28% by tailing the surface roughness of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film from 1.43 nm to 1.84 nm. The improved PCE is mainly due to the increased short-circuit current density (JSC) which is attributed to the improvement of the exciton dissociation, as confirmed by photoluminescence experiments. In addition, the experimental results indicate that the PCE can be further improved by increasing the crystallinity of MOC-PAs.

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Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

Abstract

Bibliographical note

UN SDGs

Keywords

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