SnO2–Ti3C2 MXene electron transport layers for perovskite solar cells (Electronic supplementary information (ESI) available: SEM and TEM images, UPS analysis, optoelectronic parameters of SnO2 and SnO2–Ti3C2 (1.0 wt‰), device reproducibility results, XRD analysis, SCLC results, EIS fitting parameters, and device stability. See DOI: 10.1039/c8ta12140k)

Lin Yang; Yohan Dall'Agnese; Kanit Hantanasirisakul; Christopher E Shuck; Kathleen Maleski; Mohamed Alhabeb; Gang Chen; Yu Gao; Yoshitaka Sanehira; Ajay Kumar Jena; Liang Shen; Chunxiang Dall'Agnese; Xiao-Feng Wang; Yury Gogotsi; Tsutomu Miyasaka

doi:10.1039/c8ta12140k

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SnO2–Ti3C2 MXene electron transport layers for perovskite solar cells (Electronic supplementary information (ESI) available: SEM and TEM images, UPS analysis, optoelectronic parameters of SnO2 and SnO2–Ti3C2 (1.0 wt‰), device reproducibility results, XRD analysis, SCLC results, EIS fitting parameters, and device stability. See DOI: 10.1039/c8ta12140k)

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SnO2–Ti3C2 MXene electron transport layers for perovskite solar cells (Electronic supplementary information (ESI) available: SEM and TEM images, UPS analysis, optoelectronic parameters of SnO2 and SnO2–Ti3C2 (1.0 wt‰), device reproducibility results, XRD analysis, SCLC results, EIS fitting parameters, and device stability. See DOI: 10.1039/c8ta12140k)

Lin Yang, Yohan Dall'Agnese, Kanit Hantanasirisakul, Christopher E Shuck, Kathleen Maleski, Mohamed Alhabeb, Gang Chen, Yu Gao, Yoshitaka Sanehira, Ajay Kumar Jena, …

Journal of materials chemistry. A, Materials for energy and sustainability, v 7(10), pp 5635-5642

01 Jan 2019

DOI: https://doi.org/10.1039/c8ta12140k

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Abstract

Transition metals

Transportation services

Photoluminescence

Electron transfer

Photovoltaic cells

Optical properties

Electron mobility

Charge transfer

Low temperature

Solar cells

Spectroscopy

Parameters

Optoelectronic devices

Perovskites

Photons

Stability analysis

Tin dioxide

Nanocomposites

Reproducibility

Metal carbides

Electrochemistry

Electron transport

Dimensional stability

Electrochemical impedance spectroscopy

Energy conversion efficiency

MXenes, a class of two-dimensional (2D) transition metal carbides and nitrides, have a wide range of potential applications due to their unique electronic, optical, plasmonic, and other properties. Herein, we explore the use of the Ti3C2 MXene in organic–inorganic lead halide perovskite solar cells (PSCs). SnO2–Ti3C2 MXene nanocomposites with different contents of Ti3C2 (0, 0.5, 1.0, 2.0, and 2.5 wt‰) were used as electron transport layers (ETLs) in low-temperature processed planar-structured PSCs. Mixing SnO2 with 1.0 wt‰ Ti3C2 effectively increases the power conversion efficiency (PCE) from 17.23% to 18.34%, whereas the device prepared with pristine Ti3C2 as the ETL achieves a PCE of 5.28%. Photoluminescence and electrochemical impedance spectroscopy results reveal that metallic Ti3C2 MXene nanosheets provide superior charge transfer paths, enhancing electron extraction, electron mobility, and decreasing the electron transfer resistance at the ETL/perovskite interface, and thus leading to higher photocurrents. This work proposes a new field of application for MXenes and a promising method to increase the efficiency of solar cells.

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Title: SnO2–Ti3C2 MXene electron transport layers for perovskite solar cells (Electronic supplementary information (ESI) available: SEM and TEM images, UPS analysis, optoelectronic parameters of SnO2 and SnO2–Ti3C2 (1.0 wt‰), device reproducibility results, XRD analysis, SCLC results, EIS fitting parameters, and device stability. See DOI: 10.1039/c8ta12140k)
Creators: Lin Yang
Yohan Dall'Agnese
Kanit Hantanasirisakul
Christopher E Shuck
Kathleen Maleski
Mohamed Alhabeb
Gang Chen
Yu Gao
Yoshitaka Sanehira
Ajay Kumar Jena
Liang Shen
Chunxiang Dall'Agnese
Xiao-Feng Wang
Yury Gogotsi
Tsutomu Miyasaka
Publication Details: Journal of materials chemistry. A, Materials for energy and sustainability, v 7(10), pp 5635-5642
Publisher: Royal Society of Chemistry; Cambridge
Resource Type: Journal article
Language: English
Academic Unit: Materials Science and Engineering
Web of Science ID: WOS:000463824300054
Scopus ID: 2-s2.0-85062591883
Other Identifier: 991014969876804721

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Collaboration types: Domestic collaboration; International collaboration
Web of Science research areas: Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary