Epitaxial 1D electron transport layers for high-performance perovskite solar cells

Gill Sang Han; Hyun Suk Chung; Dong Hoe Kim; Byeong Jo Kim; Jin Wook Lee; Nam Gyu Park; In Sun Cho; Jung Kun Lee; Sangwook Lee; Hyun Suk Jung

doi:10.1039/c5nr03476k

Epitaxial 1D electron transport layers for high-performance perovskite solar cells

Gill Sang Han
, Hyun Suk Chung
, Dong Hoe Kim
, Byeong Jo Kim
, Jin Wook Lee
, Nam Gyu Park
, In Sun Cho
, Jung Kun Lee
, Sangwook Lee^*
, Hyun Suk Jung

^*Corresponding author for this work

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

50 Citations (Scopus)

Abstract

We demonstrate high-performance perovskite solar cells with excellent electron transport properties using a one-dimensional (1D) electron transport layer (ETL). The 1D array-based ETL is comprised of 1D SnO₂ nanowires (NWs) array grown on a F:SnO₂ transparent conducting oxide substrate and rutile TiO₂ nanoshells epitaxially grown on the surface of the 1D SnO₂ NWs. The optimized devices show more than 95% internal quantum yield at 750 nm, and a power conversion efficiency (PCE) of 14.2%. The high quantum yield is attributed to dramatically enhanced electron transport in the epitaxial TiO₂ layer, compared to that in conventional nanoparticle-based mesoporous TiO₂ (mp-TiO₂) layers. In addition, the open space in the 1D array-based ETL increases the prevalence of uniform TiO₂/perovskite junctions, leading to reproducible device performance with a high fill factor. This work offers a method to achieve reproducible, high-efficiency perovskite solar cells with high-speed electron transport.

Original language	English
Pages (from-to)	15284-15290
Number of pages	7
Journal	Nanoscale
Volume	7
Issue number	37
DOIs	https://doi.org/10.1039/c5nr03476k
Publication status	Published - 2015 Oct 7
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Materials Science

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10.1039/c5nr03476k

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@article{1114746f61024d93b79d0f5334ea279f,

title = "Epitaxial 1D electron transport layers for high-performance perovskite solar cells",

abstract = "We demonstrate high-performance perovskite solar cells with excellent electron transport properties using a one-dimensional (1D) electron transport layer (ETL). The 1D array-based ETL is comprised of 1D SnO2 nanowires (NWs) array grown on a F:SnO2 transparent conducting oxide substrate and rutile TiO2 nanoshells epitaxially grown on the surface of the 1D SnO2 NWs. The optimized devices show more than 95\% internal quantum yield at 750 nm, and a power conversion efficiency (PCE) of 14.2\%. The high quantum yield is attributed to dramatically enhanced electron transport in the epitaxial TiO2 layer, compared to that in conventional nanoparticle-based mesoporous TiO2 (mp-TiO2) layers. In addition, the open space in the 1D array-based ETL increases the prevalence of uniform TiO2/perovskite junctions, leading to reproducible device performance with a high fill factor. This work offers a method to achieve reproducible, high-efficiency perovskite solar cells with high-speed electron transport.",

author = "Han, \{Gill Sang\} and Chung, \{Hyun Suk\} and Kim, \{Dong Hoe\} and Kim, \{Byeong Jo\} and Lee, \{Jin Wook\} and Park, \{Nam Gyu\} and Cho, \{In Sun\} and Lee, \{Jung Kun\} and Sangwook Lee and Jung, \{Hyun Suk\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Royal Society of Chemistry.",

year = "2015",

month = oct,

day = "7",

doi = "10.1039/c5nr03476k",

language = "English",

volume = "7",

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T1 - Epitaxial 1D electron transport layers for high-performance perovskite solar cells

AU - Han, Gill Sang

AU - Chung, Hyun Suk

AU - Kim, Dong Hoe

AU - Kim, Byeong Jo

AU - Lee, Jin Wook

AU - Park, Nam Gyu

AU - Cho, In Sun

AU - Lee, Jung Kun

AU - Lee, Sangwook

AU - Jung, Hyun Suk

PY - 2015/10/7

Y1 - 2015/10/7

N2 - We demonstrate high-performance perovskite solar cells with excellent electron transport properties using a one-dimensional (1D) electron transport layer (ETL). The 1D array-based ETL is comprised of 1D SnO2 nanowires (NWs) array grown on a F:SnO2 transparent conducting oxide substrate and rutile TiO2 nanoshells epitaxially grown on the surface of the 1D SnO2 NWs. The optimized devices show more than 95% internal quantum yield at 750 nm, and a power conversion efficiency (PCE) of 14.2%. The high quantum yield is attributed to dramatically enhanced electron transport in the epitaxial TiO2 layer, compared to that in conventional nanoparticle-based mesoporous TiO2 (mp-TiO2) layers. In addition, the open space in the 1D array-based ETL increases the prevalence of uniform TiO2/perovskite junctions, leading to reproducible device performance with a high fill factor. This work offers a method to achieve reproducible, high-efficiency perovskite solar cells with high-speed electron transport.

AB - We demonstrate high-performance perovskite solar cells with excellent electron transport properties using a one-dimensional (1D) electron transport layer (ETL). The 1D array-based ETL is comprised of 1D SnO2 nanowires (NWs) array grown on a F:SnO2 transparent conducting oxide substrate and rutile TiO2 nanoshells epitaxially grown on the surface of the 1D SnO2 NWs. The optimized devices show more than 95% internal quantum yield at 750 nm, and a power conversion efficiency (PCE) of 14.2%. The high quantum yield is attributed to dramatically enhanced electron transport in the epitaxial TiO2 layer, compared to that in conventional nanoparticle-based mesoporous TiO2 (mp-TiO2) layers. In addition, the open space in the 1D array-based ETL increases the prevalence of uniform TiO2/perovskite junctions, leading to reproducible device performance with a high fill factor. This work offers a method to achieve reproducible, high-efficiency perovskite solar cells with high-speed electron transport.

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DO - 10.1039/c5nr03476k

M3 - Article

AN - SCOPUS:84942101113

SN - 2040-3364

VL - 7

SP - 15284

EP - 15290

JO - Nanoscale

JF - Nanoscale

IS - 37

ER -

Epitaxial 1D electron transport layers for high-performance perovskite solar cells

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