Activated selenium for promoted formation of metal selenide nanocrystals in solvothermal synthesis

Jianfei ZHANG; Shu ZHANG; Haitao ZHANG; Yange ZHANG; Zhi ZHENG; Yong XIANG

doi:10.1016/j.matlet.2014.02.058

Activated selenium for promoted formation of metal selenide nanocrystals in solvothermal synthesis

Jianfei ZHANG, Shu ZHANG^*, Haitao ZHANG, Yange ZHANG, Zhi ZHENG, Yong XIANG

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

11 Citations (Scopus)

Abstract

This paper describes a convenient route to activate elemental selenium that is suitable to be used in the synthesis of metal selenide nanocrystals through a solvothermal method. Elemental selenium is reduced to highly activated Se ^2- by NaBH₄ in ethylenediamine under solvothermal conditions. To demonstrate the reactivity of the resulting selenization reagent, CuInSe₂ (CIS) nanocrystals are synthesized with significantly promoted reaction kinetics through a solvothermal process, compared with reactions using normal elemental selenium. The promoted reaction rate associated with the activated selenium can be attributed to the homogeneous reaction between Se^2- and metal ions and higher activity of Se^2- than Se(0). The CIS nanocrystals synthesized with activated Se show single phase constituent, homogeneous particle size and morphology, and reliable photoelectric properties, which are suitable for photovoltaic applications.

Original language	English
Pages (from-to)	306-308
Number of pages	3
Journal	Materials Letters
Volume	122
Early online date	24 Feb 2014
DOIs	https://doi.org/10.1016/j.matlet.2014.02.058
Publication status	Published - 1 May 2014
Externally published	Yes

Funding

The authors gratefully acknowledge the National Science Funds of China (Contract no. 51102038), Fundamental Research Funds for the Central Universities (Contract nos. ZYGX2011J133 and ZYGX2012J156), and Innovation Fund from the State Key Laboratory of Electronic Thin Films and Integrated Devices (Contract no. CXJJ2010001).

Keywords

Metal selenides
Nanocrystalline materials
Solar energy materials
Sovothermal synthesis

UN SDGs

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

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10.1016/j.matlet.2014.02.058

Cite this

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title = "Activated selenium for promoted formation of metal selenide nanocrystals in solvothermal synthesis",

abstract = "This paper describes a convenient route to activate elemental selenium that is suitable to be used in the synthesis of metal selenide nanocrystals through a solvothermal method. Elemental selenium is reduced to highly activated Se 2- by NaBH4 in ethylenediamine under solvothermal conditions. To demonstrate the reactivity of the resulting selenization reagent, CuInSe2 (CIS) nanocrystals are synthesized with significantly promoted reaction kinetics through a solvothermal process, compared with reactions using normal elemental selenium. The promoted reaction rate associated with the activated selenium can be attributed to the homogeneous reaction between Se2- and metal ions and higher activity of Se2- than Se(0). The CIS nanocrystals synthesized with activated Se show single phase constituent, homogeneous particle size and morphology, and reliable photoelectric properties, which are suitable for photovoltaic applications.",

keywords = "Metal selenides, Nanocrystalline materials, Solar energy materials, Sovothermal synthesis",

author = "Jianfei ZHANG and Shu ZHANG and Haitao ZHANG and Yange ZHANG and Zhi ZHENG and Yong XIANG",

year = "2014",

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doi = "10.1016/j.matlet.2014.02.058",

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journal = "Materials Letters",

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T1 - Activated selenium for promoted formation of metal selenide nanocrystals in solvothermal synthesis

AU - ZHANG, Jianfei

AU - ZHANG, Shu

AU - ZHANG, Haitao

AU - ZHANG, Yange

AU - ZHENG, Zhi

AU - XIANG, Yong

PY - 2014/5/1

Y1 - 2014/5/1

N2 - This paper describes a convenient route to activate elemental selenium that is suitable to be used in the synthesis of metal selenide nanocrystals through a solvothermal method. Elemental selenium is reduced to highly activated Se 2- by NaBH4 in ethylenediamine under solvothermal conditions. To demonstrate the reactivity of the resulting selenization reagent, CuInSe2 (CIS) nanocrystals are synthesized with significantly promoted reaction kinetics through a solvothermal process, compared with reactions using normal elemental selenium. The promoted reaction rate associated with the activated selenium can be attributed to the homogeneous reaction between Se2- and metal ions and higher activity of Se2- than Se(0). The CIS nanocrystals synthesized with activated Se show single phase constituent, homogeneous particle size and morphology, and reliable photoelectric properties, which are suitable for photovoltaic applications.

AB - This paper describes a convenient route to activate elemental selenium that is suitable to be used in the synthesis of metal selenide nanocrystals through a solvothermal method. Elemental selenium is reduced to highly activated Se 2- by NaBH4 in ethylenediamine under solvothermal conditions. To demonstrate the reactivity of the resulting selenization reagent, CuInSe2 (CIS) nanocrystals are synthesized with significantly promoted reaction kinetics through a solvothermal process, compared with reactions using normal elemental selenium. The promoted reaction rate associated with the activated selenium can be attributed to the homogeneous reaction between Se2- and metal ions and higher activity of Se2- than Se(0). The CIS nanocrystals synthesized with activated Se show single phase constituent, homogeneous particle size and morphology, and reliable photoelectric properties, which are suitable for photovoltaic applications.

KW - Metal selenides

KW - Nanocrystalline materials

KW - Solar energy materials

KW - Sovothermal synthesis

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DO - 10.1016/j.matlet.2014.02.058

M3 - Journal Article (refereed)

AN - SCOPUS:84896514125

SN - 0167-577X

VL - 122

SP - 306

EP - 308

JO - Materials Letters

JF - Materials Letters

ER -

Activated selenium for promoted formation of metal selenide nanocrystals in solvothermal synthesis

Abstract

Funding

Keywords

UN SDGs

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