Zinc alloyed iron pyrite ternary nanocrystals for band gap broadening

Baodong Mao; Qingfeng Dong; Zhengguo Xiao; Christopher L. Exstrom; Scott A. Darveau; Thomas E. Webber; Bjorn D. Lund; Hui Huang; Zhenhui Kang; Jinsong Huang

doi:10.1039/c3ta11039g

Zinc alloyed iron pyrite ternary nanocrystals for band gap broadening

Baodong Mao, Qingfeng Dong, Zhengguo Xiao, Christopher L. Exstrom, Scott A. Darveau, Thomas E. Webber, Bjorn D. Lund, Hui Huang, Zhenhui Kang, Jinsong Huang

Chemistry

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

25 Scopus citations

Abstract

Iron pyrite (FeS₂) is one of the most promising photovoltaic materials with high natural abundance and low cost but with a lower-than-optimum band gap of 0.95 eV. Here the feasibility of band gap broadening was explored by zinc alloying of FeS₂ nanocrystals (NCs). A significant amount of zinc up to 6 at%, 30 times higher than previously reported, was incorporated into the FeS₂ NCs. In contrast to band gap bowing predicted by first-principles calculations, a band gap enlargement of ∼0.1 eV was observed by zinc alloying. A more than five-times reduction of dark current in the zinc alloyed FeS₂ photoconductor was observed and should ascribe to the increased band gap.

Original language	English (US)
Pages (from-to)	12060-12065
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	1
Issue number	39
DOIs	https://doi.org/10.1039/c3ta11039g
State	Published - Oct 21 2013

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1039/c3ta11039g

Cite this

@article{219d27ca186243069ca3677653e7b67d,

title = "Zinc alloyed iron pyrite ternary nanocrystals for band gap broadening",

abstract = "Iron pyrite (FeS2) is one of the most promising photovoltaic materials with high natural abundance and low cost but with a lower-than-optimum band gap of 0.95 eV. Here the feasibility of band gap broadening was explored by zinc alloying of FeS2 nanocrystals (NCs). A significant amount of zinc up to 6 at%, 30 times higher than previously reported, was incorporated into the FeS2 NCs. In contrast to band gap bowing predicted by first-principles calculations, a band gap enlargement of ∼0.1 eV was observed by zinc alloying. A more than five-times reduction of dark current in the zinc alloyed FeS2 photoconductor was observed and should ascribe to the increased band gap.",

author = "Baodong Mao and Qingfeng Dong and Zhengguo Xiao and Exstrom, {Christopher L.} and Darveau, {Scott A.} and Webber, {Thomas E.} and Lund, {Bjorn D.} and Hui Huang and Zhenhui Kang and Jinsong Huang",

year = "2013",

month = oct,

day = "21",

doi = "10.1039/c3ta11039g",

language = "English (US)",

volume = "1",

pages = "12060--12065",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

number = "39",

}

TY - JOUR

T1 - Zinc alloyed iron pyrite ternary nanocrystals for band gap broadening

AU - Mao, Baodong

AU - Dong, Qingfeng

AU - Xiao, Zhengguo

AU - Exstrom, Christopher L.

AU - Darveau, Scott A.

AU - Webber, Thomas E.

AU - Lund, Bjorn D.

AU - Huang, Hui

AU - Kang, Zhenhui

AU - Huang, Jinsong

PY - 2013/10/21

Y1 - 2013/10/21

N2 - Iron pyrite (FeS2) is one of the most promising photovoltaic materials with high natural abundance and low cost but with a lower-than-optimum band gap of 0.95 eV. Here the feasibility of band gap broadening was explored by zinc alloying of FeS2 nanocrystals (NCs). A significant amount of zinc up to 6 at%, 30 times higher than previously reported, was incorporated into the FeS2 NCs. In contrast to band gap bowing predicted by first-principles calculations, a band gap enlargement of ∼0.1 eV was observed by zinc alloying. A more than five-times reduction of dark current in the zinc alloyed FeS2 photoconductor was observed and should ascribe to the increased band gap.

AB - Iron pyrite (FeS2) is one of the most promising photovoltaic materials with high natural abundance and low cost but with a lower-than-optimum band gap of 0.95 eV. Here the feasibility of band gap broadening was explored by zinc alloying of FeS2 nanocrystals (NCs). A significant amount of zinc up to 6 at%, 30 times higher than previously reported, was incorporated into the FeS2 NCs. In contrast to band gap bowing predicted by first-principles calculations, a band gap enlargement of ∼0.1 eV was observed by zinc alloying. A more than five-times reduction of dark current in the zinc alloyed FeS2 photoconductor was observed and should ascribe to the increased band gap.

UR - http://www.scopus.com/inward/record.url?scp=84884297413&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884297413&partnerID=8YFLogxK

U2 - 10.1039/c3ta11039g

DO - 10.1039/c3ta11039g

M3 - Article

AN - SCOPUS:84884297413

SN - 2050-7488

VL - 1

SP - 12060

EP - 12065

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 39

ER -

Zinc alloyed iron pyrite ternary nanocrystals for band gap broadening

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this