Enhanced UV stability of perovskite solar cells with a SrO interlayer

Sang Won Lee; Seongtak Kim; Soohyun Bae; Kyungjin Cho; Taewon Chung; Jae Keun Hwang; Inseol Song; Wonkyu Lee; Sungeun Park; Jaebong Jung; Jihun Chun; Yoon Jung Lee; Yeon Ji Moon; Hae Seok Lee; Donghwan Kim; Chan Bin Mo; Yoonmook Kang

doi:10.1016/j.orgel.2018.09.019

Enhanced UV stability of perovskite solar cells with a SrO interlayer

Sang Won Lee, Seongtak Kim, Soohyun Bae, Kyungjin Cho, Taewon Chung, Jae Keun Hwang, Inseol Song, Wonkyu Lee, Sungeun Park, Jaebong Jung, Jihun Chun, Yoon Jung Lee, Yeon Ji Moon, Hae Seok Lee, Donghwan Kim, Chan Bin Mo, Yoonmook Kang

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

17 Citations (Scopus)

Abstract

We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH₃NH₃PbI₃ perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.

Original language	English
Pages (from-to)	343-348
Number of pages	6
Journal	Organic Electronics
Volume	63
DOIs	https://doi.org/10.1016/j.orgel.2018.09.019
Publication status	Published - 2018 Dec

Keywords

Interface passivation
Micro-photoluminescence
Perovskite solar cell
Strontium oxide
UV stability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Chemistry(all)
Biomaterials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.orgel.2018.09.019

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Enhanced UV stability of perovskite solar cells with a SrO interlayer. / Lee, Sang Won; Kim, Seongtak; Bae, Soohyun; Cho, Kyungjin; Chung, Taewon; Hwang, Jae Keun; Song, Inseol; Lee, Wonkyu; Park, Sungeun; Jung, Jaebong; Chun, Jihun; Lee, Yoon Jung; Moon, Yeon Ji; Lee, Hae Seok ; Kim, Donghwan; Mo, Chan Bin; Kang, Yoonmook.

In: Organic Electronics, Vol. 63, 12.2018, p. 343-348.

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

Lee, Sang Won ; Kim, Seongtak ; Bae, Soohyun ; Cho, Kyungjin ; Chung, Taewon ; Hwang, Jae Keun ; Song, Inseol ; Lee, Wonkyu ; Park, Sungeun ; Jung, Jaebong ; Chun, Jihun ; Lee, Yoon Jung ; Moon, Yeon Ji ; Lee, Hae Seok ; Kim, Donghwan ; Mo, Chan Bin ; Kang, Yoonmook. / Enhanced UV stability of perovskite solar cells with a SrO interlayer. In: Organic Electronics. 2018 ; Vol. 63. pp. 343-348.

@article{2183f0708f80471d87c9e363aef848a8,

title = "Enhanced UV stability of perovskite solar cells with a SrO interlayer",

abstract = "We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.",

keywords = "Interface passivation, Micro-photoluminescence, Perovskite solar cell, Strontium oxide, UV stability",

author = "Lee, {Sang Won} and Seongtak Kim and Soohyun Bae and Kyungjin Cho and Taewon Chung and Hwang, {Jae Keun} and Inseol Song and Wonkyu Lee and Sungeun Park and Jaebong Jung and Jihun Chun and Lee, {Yoon Jung} and Moon, {Yeon Ji} and Lee, {Hae Seok} and Donghwan Kim and Mo, {Chan Bin} and Yoonmook Kang",

note = "Funding Information: This study was supported by the Korea Institute of Energy Technology Evaluation and Planning and the Ministry of Trade, Industry and Energy of the Republic of Korea (No. 20173030014370 ). This work was also supported by the “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning , with financial support from the Ministry of Trade, Industry and Energy, Republic of Korea (No. 20154030200760 ) and the KU-KIST Graduate School Project . The authors thank Laura E. Mundt, Martin C. Schubert, and Stefan W. Glunz for measuring micro-photoluminescence at Fraunhofer ISE. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = dec,

doi = "10.1016/j.orgel.2018.09.019",

language = "English",

volume = "63",

pages = "343--348",

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T1 - Enhanced UV stability of perovskite solar cells with a SrO interlayer

AU - Lee, Sang Won

AU - Kim, Seongtak

AU - Bae, Soohyun

AU - Cho, Kyungjin

AU - Chung, Taewon

AU - Hwang, Jae Keun

AU - Song, Inseol

AU - Lee, Wonkyu

AU - Park, Sungeun

AU - Jung, Jaebong

AU - Chun, Jihun

AU - Lee, Yoon Jung

AU - Moon, Yeon Ji

AU - Lee, Hae Seok

AU - Kim, Donghwan

AU - Mo, Chan Bin

AU - Kang, Yoonmook

N1 - Funding Information: This study was supported by the Korea Institute of Energy Technology Evaluation and Planning and the Ministry of Trade, Industry and Energy of the Republic of Korea (No. 20173030014370 ). This work was also supported by the “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning , with financial support from the Ministry of Trade, Industry and Energy, Republic of Korea (No. 20154030200760 ) and the KU-KIST Graduate School Project . The authors thank Laura E. Mundt, Martin C. Schubert, and Stefan W. Glunz for measuring micro-photoluminescence at Fraunhofer ISE. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/12

Y1 - 2018/12

N2 - We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.

AB - We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.

KW - Interface passivation

KW - Micro-photoluminescence

KW - Perovskite solar cell

KW - Strontium oxide

KW - UV stability

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U2 - 10.1016/j.orgel.2018.09.019

DO - 10.1016/j.orgel.2018.09.019

M3 - Article

AN - SCOPUS:85054327226

VL - 63

SP - 343

EP - 348

JO - Organic Electronics: physics, materials, applications

JF - Organic Electronics: physics, materials, applications

SN - 1566-1199

ER -

Enhanced UV stability of perovskite solar cells with a SrO interlayer

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