Band-gap-graded Cu2 ZnSn(S1-x,Se x) 4 solar cells fabricated by an ethanol-based, particulate precursor ink route

Kyoohee Woo, Youngwoo Kim, Wooseok Yang, Kyujin Kim, Inhyuk Kim, Yunjung Oh, Jin Young Kim, Joo Ho Moon

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

Solution processing of earth-abundant Cu 2 ZnSn(S 1-x,Se x) 4 (CZTSSe) absorber materials is an attractive research area in the economical and large-scale deployment of photovoltaics. Here, a band-gap-graded CZTSSe thin-film solar cell with 7.1% efficiency was developed using non-toxic solvent-based ink without the involvement of complex particle synthesis, highly toxic solvents, or organic additives. Despite the high series resistance due to the presence of a thick Mo(S,Se) x layer and Zn(S,Se) aggregates, a high short-circuit current density (J SC) was generated. In addition, there was no significant difference in open circuit voltages (V OC) between CZTS (0.517 V) and CZTSSe (0.505-0.479 V) cells, despite a significant band gap change from 1.51 eV to 1.24 eV. The high J SC and less loss of V OC are attributed to the effect of band gap grading induced by Se grading in the CZTSSe absorber layer. Our environmentally benign ink approach will enable the realization of low-cost, large-area, high-efficiency thin-film solar cells.

Original languageEnglish
Article number3069
JournalScientific reports
Volume3
DOIs
Publication statusPublished - 2013 Nov 11

Fingerprint

Ink
Ethanol
Poisons
Costs and Cost Analysis
Research

All Science Journal Classification (ASJC) codes

  • General

Cite this

Woo, Kyoohee ; Kim, Youngwoo ; Yang, Wooseok ; Kim, Kyujin ; Kim, Inhyuk ; Oh, Yunjung ; Kim, Jin Young ; Moon, Joo Ho. / Band-gap-graded Cu2 ZnSn(S1-x,Se x) 4 solar cells fabricated by an ethanol-based, particulate precursor ink route. In: Scientific reports. 2013 ; Vol. 3.
@article{217e7639ab17425e9f969748ef29325c,
title = "Band-gap-graded Cu2 ZnSn(S1-x,Se x) 4 solar cells fabricated by an ethanol-based, particulate precursor ink route",
abstract = "Solution processing of earth-abundant Cu 2 ZnSn(S 1-x,Se x) 4 (CZTSSe) absorber materials is an attractive research area in the economical and large-scale deployment of photovoltaics. Here, a band-gap-graded CZTSSe thin-film solar cell with 7.1{\%} efficiency was developed using non-toxic solvent-based ink without the involvement of complex particle synthesis, highly toxic solvents, or organic additives. Despite the high series resistance due to the presence of a thick Mo(S,Se) x layer and Zn(S,Se) aggregates, a high short-circuit current density (J SC) was generated. In addition, there was no significant difference in open circuit voltages (V OC) between CZTS (0.517 V) and CZTSSe (0.505-0.479 V) cells, despite a significant band gap change from 1.51 eV to 1.24 eV. The high J SC and less loss of V OC are attributed to the effect of band gap grading induced by Se grading in the CZTSSe absorber layer. Our environmentally benign ink approach will enable the realization of low-cost, large-area, high-efficiency thin-film solar cells.",
author = "Kyoohee Woo and Youngwoo Kim and Wooseok Yang and Kyujin Kim and Inhyuk Kim and Yunjung Oh and Kim, {Jin Young} and Moon, {Joo Ho}",
year = "2013",
month = "11",
day = "11",
doi = "10.1038/srep03069",
language = "English",
volume = "3",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

Band-gap-graded Cu2 ZnSn(S1-x,Se x) 4 solar cells fabricated by an ethanol-based, particulate precursor ink route. / Woo, Kyoohee; Kim, Youngwoo; Yang, Wooseok; Kim, Kyujin; Kim, Inhyuk; Oh, Yunjung; Kim, Jin Young; Moon, Joo Ho.

In: Scientific reports, Vol. 3, 3069, 11.11.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Band-gap-graded Cu2 ZnSn(S1-x,Se x) 4 solar cells fabricated by an ethanol-based, particulate precursor ink route

AU - Woo, Kyoohee

AU - Kim, Youngwoo

AU - Yang, Wooseok

AU - Kim, Kyujin

AU - Kim, Inhyuk

AU - Oh, Yunjung

AU - Kim, Jin Young

AU - Moon, Joo Ho

PY - 2013/11/11

Y1 - 2013/11/11

N2 - Solution processing of earth-abundant Cu 2 ZnSn(S 1-x,Se x) 4 (CZTSSe) absorber materials is an attractive research area in the economical and large-scale deployment of photovoltaics. Here, a band-gap-graded CZTSSe thin-film solar cell with 7.1% efficiency was developed using non-toxic solvent-based ink without the involvement of complex particle synthesis, highly toxic solvents, or organic additives. Despite the high series resistance due to the presence of a thick Mo(S,Se) x layer and Zn(S,Se) aggregates, a high short-circuit current density (J SC) was generated. In addition, there was no significant difference in open circuit voltages (V OC) between CZTS (0.517 V) and CZTSSe (0.505-0.479 V) cells, despite a significant band gap change from 1.51 eV to 1.24 eV. The high J SC and less loss of V OC are attributed to the effect of band gap grading induced by Se grading in the CZTSSe absorber layer. Our environmentally benign ink approach will enable the realization of low-cost, large-area, high-efficiency thin-film solar cells.

AB - Solution processing of earth-abundant Cu 2 ZnSn(S 1-x,Se x) 4 (CZTSSe) absorber materials is an attractive research area in the economical and large-scale deployment of photovoltaics. Here, a band-gap-graded CZTSSe thin-film solar cell with 7.1% efficiency was developed using non-toxic solvent-based ink without the involvement of complex particle synthesis, highly toxic solvents, or organic additives. Despite the high series resistance due to the presence of a thick Mo(S,Se) x layer and Zn(S,Se) aggregates, a high short-circuit current density (J SC) was generated. In addition, there was no significant difference in open circuit voltages (V OC) between CZTS (0.517 V) and CZTSSe (0.505-0.479 V) cells, despite a significant band gap change from 1.51 eV to 1.24 eV. The high J SC and less loss of V OC are attributed to the effect of band gap grading induced by Se grading in the CZTSSe absorber layer. Our environmentally benign ink approach will enable the realization of low-cost, large-area, high-efficiency thin-film solar cells.

UR - http://www.scopus.com/inward/record.url?scp=84887089268&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887089268&partnerID=8YFLogxK

U2 - 10.1038/srep03069

DO - 10.1038/srep03069

M3 - Article

C2 - 24166151

AN - SCOPUS:84887089268

VL - 3

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 3069

ER -