Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

Mingyu Jeong; In Woo Choi; Eun Min Go; Yongjoon Cho; Minjin Kim; Byongkyu Lee; Seonghun Jeong; Yimhyun Jo; Hye Won Choi; Jiyun Lee; Jin Hyuk Bae; Sang Kyu Kwak; Dong Suk Kim; Changduk Yang

doi:10.1126/science.abb7167

Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

Mingyu Jeong, In Woo Choi, Eun Min Go, Yongjoon Cho, Minjin Kim, Byongkyu Lee, Seonghun Jeong, Yimhyun Jo, Hye Won Choi, Jiyun Lee, Jin Hyuk Bae, Sang Kyu Kwak, Dong Suk Kim, Changduk Yang

School of Electronics Engineering

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

1275 Scopus citations

Abstract

Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.

Original language	English
Article number	eabb7167
Journal	Science
Volume	369
Issue number	6511
DOIs	https://doi.org/10.1126/science.abb7167
State	Published - 25 Sep 2020

Access to Document

10.1126/science.abb7167

Cite this

@article{9a072c7badf14ccf844080ed20c49f7b,

title = "Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss",

abstract = "Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.",

author = "Mingyu Jeong and Choi, {In Woo} and Go, {Eun Min} and Yongjoon Cho and Minjin Kim and Byongkyu Lee and Seonghun Jeong and Yimhyun Jo and Choi, {Hye Won} and Jiyun Lee and Bae, {Jin Hyuk} and Kwak, {Sang Kyu} and Kim, {Dong Suk} and Changduk Yang",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors.",

year = "2020",

month = sep,

day = "25",

doi = "10.1126/science.abb7167",

language = "English",

volume = "369",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6511",

}

TY - JOUR

T1 - Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

AU - Jeong, Mingyu

AU - Choi, In Woo

AU - Go, Eun Min

AU - Cho, Yongjoon

AU - Kim, Minjin

AU - Lee, Byongkyu

AU - Jeong, Seonghun

AU - Jo, Yimhyun

AU - Choi, Hye Won

AU - Lee, Jiyun

AU - Bae, Jin Hyuk

AU - Kwak, Sang Kyu

AU - Kim, Dong Suk

AU - Yang, Changduk

PY - 2020/9/25

Y1 - 2020/9/25

N2 - Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.

AB - Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.

UR - http://www.scopus.com/inward/record.url?scp=85091622020&partnerID=8YFLogxK

U2 - 10.1126/science.abb7167

DO - 10.1126/science.abb7167

M3 - Article

C2 - 32973026

AN - SCOPUS:85091622020

SN - 0036-8075

VL - 369

JO - Science

JF - Science

IS - 6511

M1 - eabb7167

ER -

Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

Abstract

Access to Document

Other files and links

Fingerprint

Cite this