Colloidally prepared La-doped BaSnO3 electrodes for efficient, photostable perovskite solar cells

Seong Sik Shin; Eun Joo Yeom; Woon Seok Yang; Seyoon Hur; Min Gyu Kim; Jino Im; Jangwon Seo; Jun Hong Noh; Sang Il Seok

doi:10.1126/science.aam6620

Colloidally prepared La-doped BaSnO₃ electrodes for efficient, photostable perovskite solar cells

Seong Sik Shin, Eun Joo Yeom, Woon Seok Yang, Seyoon Hur, Min Gyu Kim, Jino Im, Jangwon Seo, Jun Hong Noh, Sang Il Seok

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

1017 Citations (Scopus)

Abstract

Perovskite solar cells (PSCs) exceeding a power conversion efficiency (PCE) of 20% have mainly been demonstrated by using mesoporous titanium dioxide (mp-TiO₂) as an electron-transporting layer. However, TiO₂ can reduce the stability of PSCs under illumination (including ultraviolet light). Lanthanum (La)-doped BaSnO₃ (LBSO) perovskite would be an ideal replacement given its electron mobility and electronic structure, but LBSO cannot be synthesized as well-dispersible fine particles or crystallized below 500°C. We report a superoxide colloidal solution route for preparing a LBSO electrode under very mild conditions (below 300°C). The PSCs fabricated with LBSO and methylammonium lead iodide (MAPbI₃) show a steady-state power conversion efficiency of 21.2%, versus 19.7% for a mp-TiO₂ device. The LBSO-based PSCs could retain 93% of their initial performance after 1000 hours of full-Sun illumination.

Original language	English
Pages (from-to)	167-171
Number of pages	5
Journal	Science
Volume	356
Issue number	6334
DOIs	https://doi.org/10.1126/science.aam6620
Publication status	Published - 2017 Apr 14

Bibliographical note

Funding Information:
This work was supported by Global Frontier RandD Program for Multiscale Energy System (NRF-2011-0031565, NRF-2016M3A6A7945503), Climate Change Program (NRF-2015M1A2A2056542), and Wearable Platform Materials Technology Center (WMC-no. 2016R1A5A1009926) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning. This work was also financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01). All data are presented in the main text and supplementary materials. S.S.S., J.H.N., J.S., and S.I.S. are inventors on a patent application (KR 10-2016-0040923) submitted by the Korea Research Institute of Chemical Technology and Ulsan National Institute of Science and Technology that covers the preparation of Ba(La)SnO3 particles and film at low temperature. S.S.S. and J.H.N. dedicate this paper to the memory of Prof. Kug Sun Hong, who passed away on 14 March 2014.

Publisher Copyright:
© 2017, American Association for the Advancement of Science. All rights reserved.

ASJC Scopus subject areas

General

Access to Document

10.1126/science.aam6620

Cite this

@article{16a2d82702224598adb2d9d319b8c947,

title = "Colloidally prepared La-doped BaSnO3 electrodes for efficient, photostable perovskite solar cells",

abstract = "Perovskite solar cells (PSCs) exceeding a power conversion efficiency (PCE) of 20% have mainly been demonstrated by using mesoporous titanium dioxide (mp-TiO2) as an electron-transporting layer. However, TiO2 can reduce the stability of PSCs under illumination (including ultraviolet light). Lanthanum (La)-doped BaSnO3 (LBSO) perovskite would be an ideal replacement given its electron mobility and electronic structure, but LBSO cannot be synthesized as well-dispersible fine particles or crystallized below 500°C. We report a superoxide colloidal solution route for preparing a LBSO electrode under very mild conditions (below 300°C). The PSCs fabricated with LBSO and methylammonium lead iodide (MAPbI3) show a steady-state power conversion efficiency of 21.2%, versus 19.7% for a mp-TiO2 device. The LBSO-based PSCs could retain 93% of their initial performance after 1000 hours of full-Sun illumination.",

author = "Shin, {Seong Sik} and Yeom, {Eun Joo} and Yang, {Woon Seok} and Seyoon Hur and Kim, {Min Gyu} and Jino Im and Jangwon Seo and Noh, {Jun Hong} and Seok, {Sang Il}",

note = "Funding Information: This work was supported by Global Frontier RandD Program for Multiscale Energy System (NRF-2011-0031565, NRF-2016M3A6A7945503), Climate Change Program (NRF-2015M1A2A2056542), and Wearable Platform Materials Technology Center (WMC-no. 2016R1A5A1009926) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning. This work was also financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01). All data are presented in the main text and supplementary materials. S.S.S., J.H.N., J.S., and S.I.S. are inventors on a patent application (KR 10-2016-0040923) submitted by the Korea Research Institute of Chemical Technology and Ulsan National Institute of Science and Technology that covers the preparation of Ba(La)SnO3 particles and film at low temperature. S.S.S. and J.H.N. dedicate this paper to the memory of Prof. Kug Sun Hong, who passed away on 14 March 2014. Publisher Copyright: {\textcopyright} 2017, American Association for the Advancement of Science. All rights reserved.",

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AU - Shin, Seong Sik

AU - Yeom, Eun Joo

AU - Yang, Woon Seok

AU - Hur, Seyoon

AU - Kim, Min Gyu

AU - Im, Jino

AU - Seo, Jangwon

AU - Noh, Jun Hong

AU - Seok, Sang Il

N1 - Funding Information: This work was supported by Global Frontier RandD Program for Multiscale Energy System (NRF-2011-0031565, NRF-2016M3A6A7945503), Climate Change Program (NRF-2015M1A2A2056542), and Wearable Platform Materials Technology Center (WMC-no. 2016R1A5A1009926) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning. This work was also financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01). All data are presented in the main text and supplementary materials. S.S.S., J.H.N., J.S., and S.I.S. are inventors on a patent application (KR 10-2016-0040923) submitted by the Korea Research Institute of Chemical Technology and Ulsan National Institute of Science and Technology that covers the preparation of Ba(La)SnO3 particles and film at low temperature. S.S.S. and J.H.N. dedicate this paper to the memory of Prof. Kug Sun Hong, who passed away on 14 March 2014. Publisher Copyright: © 2017, American Association for the Advancement of Science. All rights reserved.

PY - 2017/4/14

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N2 - Perovskite solar cells (PSCs) exceeding a power conversion efficiency (PCE) of 20% have mainly been demonstrated by using mesoporous titanium dioxide (mp-TiO2) as an electron-transporting layer. However, TiO2 can reduce the stability of PSCs under illumination (including ultraviolet light). Lanthanum (La)-doped BaSnO3 (LBSO) perovskite would be an ideal replacement given its electron mobility and electronic structure, but LBSO cannot be synthesized as well-dispersible fine particles or crystallized below 500°C. We report a superoxide colloidal solution route for preparing a LBSO electrode under very mild conditions (below 300°C). The PSCs fabricated with LBSO and methylammonium lead iodide (MAPbI3) show a steady-state power conversion efficiency of 21.2%, versus 19.7% for a mp-TiO2 device. The LBSO-based PSCs could retain 93% of their initial performance after 1000 hours of full-Sun illumination.

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