Transparent Sn-doped In2O3 electrodes with a nanoporous surface for enhancing the performance of perovskite solar cells

Jae Ho Kim; Tae Yeon Seong; Kwun Bum Chung; Chan Su Moon; Jun Hong Noh; Hae Jun Seok; Han Ki Kim

doi:10.1016/j.jpowsour.2019.02.018

Transparent Sn-doped In₂O₃ electrodes with a nanoporous surface for enhancing the performance of perovskite solar cells

Jae Ho Kim, Tae Yeon Seong, Kwun Bum Chung, Chan Su Moon, Jun Hong Noh, Hae Jun Seok, Han Ki Kim

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

20 Citations (Scopus)

Abstract

We report on a simple and efficient process to enhance the performance of perovskite solar cells by using ITO electrodes with a nanoporous surface formed by wet-etching of self-agglomerated Ag nanoparticles. Effective removal of the Ag nanoparticles embedded in the surface of the ITO electrodes result in a nanoporous structure without changing the ITO's sheet resistance (10.17 Ω/square) and optical transmittance (89.08%) at a 550 nm wavelength. Examinations with a scanning electron microscope, a transmission electron microscope, and two-dimensional porous mapping show that the nanoporous ITO surface has an increased contact area with the electron transport layer, which enhanced the carrier extraction efficiency of the perovskite solar cells. Compare to perovskite solar cells fabricated on typical ITO with a flat surface morphology, the perovskite solar cells fabricated on the nanoporous-surface ITO show a higher fill factor of 81.1% and a power conversion efficiency of 20.1%. These results indicate that modified ITO surfaces with nano-scale porosity provide a simple and efficient method to improve the power conversion efficiency of perovskite solar cells without a complicated process.

Original language	English
Pages (from-to)	152-161
Number of pages	10
Journal	Journal of Power Sources
Volume	418
DOIs	https://doi.org/10.1016/j.jpowsour.2019.02.018
Publication status	Published - 2019 Apr 1

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351). This study also received partial support from Korea Electric Power Corporation (KEPCO).

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200 ) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351 ). This study also received partial support from Korea Electric Power Corporation (KEPCO) . Appendix A

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Ag agglomeration
Contact area
Nanoporous surface
Perovskite solar cells
Sn-doped InO

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2019.02.018

Cite this

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title = "Transparent Sn-doped In2O3 electrodes with a nanoporous surface for enhancing the performance of perovskite solar cells",

abstract = "We report on a simple and efficient process to enhance the performance of perovskite solar cells by using ITO electrodes with a nanoporous surface formed by wet-etching of self-agglomerated Ag nanoparticles. Effective removal of the Ag nanoparticles embedded in the surface of the ITO electrodes result in a nanoporous structure without changing the ITO's sheet resistance (10.17 Ω/square) and optical transmittance (89.08%) at a 550 nm wavelength. Examinations with a scanning electron microscope, a transmission electron microscope, and two-dimensional porous mapping show that the nanoporous ITO surface has an increased contact area with the electron transport layer, which enhanced the carrier extraction efficiency of the perovskite solar cells. Compare to perovskite solar cells fabricated on typical ITO with a flat surface morphology, the perovskite solar cells fabricated on the nanoporous-surface ITO show a higher fill factor of 81.1% and a power conversion efficiency of 20.1%. These results indicate that modified ITO surfaces with nano-scale porosity provide a simple and efficient method to improve the power conversion efficiency of perovskite solar cells without a complicated process.",

keywords = "Ag agglomeration, Contact area, Nanoporous surface, Perovskite solar cells, Sn-doped InO",

author = "Kim, {Jae Ho} and Seong, {Tae Yeon} and Chung, {Kwun Bum} and Moon, {Chan Su} and Noh, {Jun Hong} and Seok, {Hae Jun} and Kim, {Han Ki}",

note = "Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351). This study also received partial support from Korea Electric Power Corporation (KEPCO). Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200 ) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351 ). This study also received partial support from Korea Electric Power Corporation (KEPCO) . Appendix A Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

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AU - Kim, Jae Ho

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AU - Chung, Kwun Bum

AU - Moon, Chan Su

AU - Noh, Jun Hong

AU - Seok, Hae Jun

AU - Kim, Han Ki

N1 - Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351). This study also received partial support from Korea Electric Power Corporation (KEPCO). Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200 ) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826 and 2017M1A2A2087351 ). This study also received partial support from Korea Electric Power Corporation (KEPCO) . Appendix A Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - We report on a simple and efficient process to enhance the performance of perovskite solar cells by using ITO electrodes with a nanoporous surface formed by wet-etching of self-agglomerated Ag nanoparticles. Effective removal of the Ag nanoparticles embedded in the surface of the ITO electrodes result in a nanoporous structure without changing the ITO's sheet resistance (10.17 Ω/square) and optical transmittance (89.08%) at a 550 nm wavelength. Examinations with a scanning electron microscope, a transmission electron microscope, and two-dimensional porous mapping show that the nanoporous ITO surface has an increased contact area with the electron transport layer, which enhanced the carrier extraction efficiency of the perovskite solar cells. Compare to perovskite solar cells fabricated on typical ITO with a flat surface morphology, the perovskite solar cells fabricated on the nanoporous-surface ITO show a higher fill factor of 81.1% and a power conversion efficiency of 20.1%. These results indicate that modified ITO surfaces with nano-scale porosity provide a simple and efficient method to improve the power conversion efficiency of perovskite solar cells without a complicated process.

AB - We report on a simple and efficient process to enhance the performance of perovskite solar cells by using ITO electrodes with a nanoporous surface formed by wet-etching of self-agglomerated Ag nanoparticles. Effective removal of the Ag nanoparticles embedded in the surface of the ITO electrodes result in a nanoporous structure without changing the ITO's sheet resistance (10.17 Ω/square) and optical transmittance (89.08%) at a 550 nm wavelength. Examinations with a scanning electron microscope, a transmission electron microscope, and two-dimensional porous mapping show that the nanoporous ITO surface has an increased contact area with the electron transport layer, which enhanced the carrier extraction efficiency of the perovskite solar cells. Compare to perovskite solar cells fabricated on typical ITO with a flat surface morphology, the perovskite solar cells fabricated on the nanoporous-surface ITO show a higher fill factor of 81.1% and a power conversion efficiency of 20.1%. These results indicate that modified ITO surfaces with nano-scale porosity provide a simple and efficient method to improve the power conversion efficiency of perovskite solar cells without a complicated process.

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KW - Sn-doped InO

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