Cobalt-doped nickel oxide nanoparticles as efficient hole transport materials for low-temperature processed perovskite solar cells

Ryuji Kaneko; Towhid H. Chowdhury; Guohua Wu; Md Emrul Kayesh; Said Kazaoui; Kosuke Sugawa; Jae Joon Lee; Takeshi Noda; Ashraful Islam; Joe Otsuki

doi:10.1016/j.solener.2019.01.097

Cobalt-doped nickel oxide nanoparticles as efficient hole transport materials for low-temperature processed perovskite solar cells

Ryuji Kaneko, Towhid H. Chowdhury, Guohua Wu, Md Emrul Kayesh, Said Kazaoui, Kosuke Sugawa, Jae Joon Lee, Takeshi Noda, Ashraful Islam, Joe Otsuki

Department of Energy and Materials Engineering

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

43 Scopus citations

Abstract

We have synthesized cobalt-doped NiO_x nanoparticles containing 0.5, 1, 2, 5 and 10 mol% cobalt ions and have investigated their electronic properties, which can be processed into smooth and pinhole-free layers at low temperature (<150 °C) as hole transport layers (HTLs) for perovskite solar cells (PSCs). We have revealed that the relationship between conductivity of HTLs and hole extraction properties to improve the photovoltaic performance. The thin film of cobalt-doped NiO_x nanoparticles showed higher conductivities compared to pristine NiO_x nanoparticles. Consequently, PSCs with power conversion efficiencies over 14.5%, an improvement from 11.5% for those with the pristine NiO_x-based HTL, have been obtained. This work will contribute to the development of doped metal oxide HTLs, which are processable at low temperature.

Original language	English
Pages (from-to)	243-250
Number of pages	8
Journal	Solar Energy
Volume	181
DOIs	https://doi.org/10.1016/j.solener.2019.01.097
State	Published - 15 Mar 2019

Keywords

Hole transport materials
Low temperature process
Nickel oxide nanoparticles
Perovskite solar cells

UN SDGs

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

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10.1016/j.solener.2019.01.097

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@article{a6c9400d272a4a6c945ded7cad86466a,

title = "Cobalt-doped nickel oxide nanoparticles as efficient hole transport materials for low-temperature processed perovskite solar cells",

abstract = "We have synthesized cobalt-doped NiOx nanoparticles containing 0.5, 1, 2, 5 and 10 mol% cobalt ions and have investigated their electronic properties, which can be processed into smooth and pinhole-free layers at low temperature (<150 °C) as hole transport layers (HTLs) for perovskite solar cells (PSCs). We have revealed that the relationship between conductivity of HTLs and hole extraction properties to improve the photovoltaic performance. The thin film of cobalt-doped NiOx nanoparticles showed higher conductivities compared to pristine NiOx nanoparticles. Consequently, PSCs with power conversion efficiencies over 14.5%, an improvement from 11.5% for those with the pristine NiOx-based HTL, have been obtained. This work will contribute to the development of doped metal oxide HTLs, which are processable at low temperature.",

keywords = "Hole transport materials, Low temperature process, Nickel oxide nanoparticles, Perovskite solar cells",

author = "Ryuji Kaneko and Chowdhury, {Towhid H.} and Guohua Wu and Kayesh, {Md Emrul} and Said Kazaoui and Kosuke Sugawa and Lee, {Jae Joon} and Takeshi Noda and Ashraful Islam and Joe Otsuki",

note = "Publisher Copyright: {\textcopyright} 2019 International Solar Energy Society",

year = "2019",

month = mar,

day = "15",

doi = "10.1016/j.solener.2019.01.097",

language = "English",

volume = "181",

pages = "243--250",

journal = "Solar Energy",

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TY - JOUR

T1 - Cobalt-doped nickel oxide nanoparticles as efficient hole transport materials for low-temperature processed perovskite solar cells

AU - Kaneko, Ryuji

AU - Chowdhury, Towhid H.

AU - Wu, Guohua

AU - Kayesh, Md Emrul

AU - Kazaoui, Said

AU - Sugawa, Kosuke

AU - Lee, Jae Joon

AU - Noda, Takeshi

AU - Islam, Ashraful

AU - Otsuki, Joe

PY - 2019/3/15

Y1 - 2019/3/15

N2 - We have synthesized cobalt-doped NiOx nanoparticles containing 0.5, 1, 2, 5 and 10 mol% cobalt ions and have investigated their electronic properties, which can be processed into smooth and pinhole-free layers at low temperature (<150 °C) as hole transport layers (HTLs) for perovskite solar cells (PSCs). We have revealed that the relationship between conductivity of HTLs and hole extraction properties to improve the photovoltaic performance. The thin film of cobalt-doped NiOx nanoparticles showed higher conductivities compared to pristine NiOx nanoparticles. Consequently, PSCs with power conversion efficiencies over 14.5%, an improvement from 11.5% for those with the pristine NiOx-based HTL, have been obtained. This work will contribute to the development of doped metal oxide HTLs, which are processable at low temperature.

AB - We have synthesized cobalt-doped NiOx nanoparticles containing 0.5, 1, 2, 5 and 10 mol% cobalt ions and have investigated their electronic properties, which can be processed into smooth and pinhole-free layers at low temperature (<150 °C) as hole transport layers (HTLs) for perovskite solar cells (PSCs). We have revealed that the relationship between conductivity of HTLs and hole extraction properties to improve the photovoltaic performance. The thin film of cobalt-doped NiOx nanoparticles showed higher conductivities compared to pristine NiOx nanoparticles. Consequently, PSCs with power conversion efficiencies over 14.5%, an improvement from 11.5% for those with the pristine NiOx-based HTL, have been obtained. This work will contribute to the development of doped metal oxide HTLs, which are processable at low temperature.

KW - Hole transport materials

KW - Low temperature process

KW - Nickel oxide nanoparticles

KW - Perovskite solar cells

UR - http://www.scopus.com/inward/record.url?scp=85061261467&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2019.01.097

DO - 10.1016/j.solener.2019.01.097

M3 - Article

AN - SCOPUS:85061261467

SN - 0038-092X

VL - 181

SP - 243

EP - 250

JO - Solar Energy

JF - Solar Energy

ER -

Cobalt-doped nickel oxide nanoparticles as efficient hole transport materials for low-temperature processed perovskite solar cells

Abstract

Keywords

UN SDGs

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