New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications

Zhuoran Wang; Nicolas Brodusch; Raynald Gauvin; George P. Demopoulos

doi:10.1021/acssuschemeng.9b03814

New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications

Zhuoran Wang, Nicolas Brodusch, Raynald Gauvin, George P. Demopoulos^*

^*Corresponding author for this work

McGill University

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

7 Citations (Scopus)

Abstract

Cu₂ZnSnS₄ or kesterite and its selenium alloyed counterparts are considered promising for next generation photovoltaic applications due to their excellent optoelectronic properties and earth-abundant, nontoxic composition. In order to alleviate the adverse effects of defects and interfaces on charge separation and transport in current thin film kesterite photovoltaics, new solutions such as the application of an inverted superstrate configuration have been proposed. In this article, sulfurized and selenized kesterite were deposited by solution processing on thin ALD Al₂O₃ coated TiO₂ nanorods to fabricate novel nanostructured devices free of additional buffer layers and hole transfer materials (HTM). The selenized kesterite (CZTSSe) solar cell demonstrated an energy conversion efficiency of 1.85% with high J_sc of ∼20 mA/cm² while the sulfurized kesterite (CZTS) device showed lower solar cell efficiency but excellent photodetecting properties under reverse bias with adjustable working window from visible-only to UV-vis-NIR range.

Original language	English
Pages (from-to)	15093-15101
Number of pages	9
Journal	ACS Sustainable Chemistry and Engineering
Volume	7
Issue number	17
DOIs	https://doi.org/10.1021/acssuschemeng.9b03814
Publication status	Published - 3 Sept 2019
Externally published	Yes

Keywords

AlO-coated TiO nanorods
CZTSSe
CdS-free PV
Kesterite
Photodetectors

UN SDGs

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

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10.1021/acssuschemeng.9b03814

Cite this

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title = "New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications",

abstract = "Cu2ZnSnS4 or kesterite and its selenium alloyed counterparts are considered promising for next generation photovoltaic applications due to their excellent optoelectronic properties and earth-abundant, nontoxic composition. In order to alleviate the adverse effects of defects and interfaces on charge separation and transport in current thin film kesterite photovoltaics, new solutions such as the application of an inverted superstrate configuration have been proposed. In this article, sulfurized and selenized kesterite were deposited by solution processing on thin ALD Al2O3 coated TiO2 nanorods to fabricate novel nanostructured devices free of additional buffer layers and hole transfer materials (HTM). The selenized kesterite (CZTSSe) solar cell demonstrated an energy conversion efficiency of 1.85% with high Jsc of ∼20 mA/cm2 while the sulfurized kesterite (CZTS) device showed lower solar cell efficiency but excellent photodetecting properties under reverse bias with adjustable working window from visible-only to UV-vis-NIR range.",

keywords = "AlO-coated TiO nanorods, CZTSSe, CdS-free PV, Kesterite, Photodetectors",

author = "Zhuoran Wang and Nicolas Brodusch and Raynald Gauvin and Demopoulos, {George P.}",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acssuschemeng.9b03814",

language = "English",

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New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications. / Wang, Zhuoran; Brodusch, Nicolas; Gauvin, Raynald et al.
In: ACS Sustainable Chemistry and Engineering, Vol. 7, No. 17, 03.09.2019, p. 15093-15101.

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

TY - JOUR

T1 - New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications

AU - Wang, Zhuoran

AU - Brodusch, Nicolas

AU - Gauvin, Raynald

AU - Demopoulos, George P.

PY - 2019/9/3

Y1 - 2019/9/3

N2 - Cu2ZnSnS4 or kesterite and its selenium alloyed counterparts are considered promising for next generation photovoltaic applications due to their excellent optoelectronic properties and earth-abundant, nontoxic composition. In order to alleviate the adverse effects of defects and interfaces on charge separation and transport in current thin film kesterite photovoltaics, new solutions such as the application of an inverted superstrate configuration have been proposed. In this article, sulfurized and selenized kesterite were deposited by solution processing on thin ALD Al2O3 coated TiO2 nanorods to fabricate novel nanostructured devices free of additional buffer layers and hole transfer materials (HTM). The selenized kesterite (CZTSSe) solar cell demonstrated an energy conversion efficiency of 1.85% with high Jsc of ∼20 mA/cm2 while the sulfurized kesterite (CZTS) device showed lower solar cell efficiency but excellent photodetecting properties under reverse bias with adjustable working window from visible-only to UV-vis-NIR range.

AB - Cu2ZnSnS4 or kesterite and its selenium alloyed counterparts are considered promising for next generation photovoltaic applications due to their excellent optoelectronic properties and earth-abundant, nontoxic composition. In order to alleviate the adverse effects of defects and interfaces on charge separation and transport in current thin film kesterite photovoltaics, new solutions such as the application of an inverted superstrate configuration have been proposed. In this article, sulfurized and selenized kesterite were deposited by solution processing on thin ALD Al2O3 coated TiO2 nanorods to fabricate novel nanostructured devices free of additional buffer layers and hole transfer materials (HTM). The selenized kesterite (CZTSSe) solar cell demonstrated an energy conversion efficiency of 1.85% with high Jsc of ∼20 mA/cm2 while the sulfurized kesterite (CZTS) device showed lower solar cell efficiency but excellent photodetecting properties under reverse bias with adjustable working window from visible-only to UV-vis-NIR range.

KW - AlO-coated TiO nanorods

KW - CZTSSe

KW - CdS-free PV

KW - Kesterite

KW - Photodetectors

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New Insight into Sulfurized and Selenized Kesterite-Titania Nanostructures for CdS-free and HTM-free Photovoltaic and Voltage-Modulated Photodetecting Applications

Abstract

Keywords

UN SDGs

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