Performance enhancement of mesoporous TiO 2 -based perovskite solar cells by ZnS ultrathin-interfacial modification layer

Shoyebmohamad F. Shaikh, Hyeok Chan Kwon, Wooseok Yang, Rajaram S. Mane, Joo Ho Moon

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Interfacial modification (IM) plays a vital role in boosting the performance of perovskite solar cells. Herein, we demonstrate a new strategy in which zinc sulfide (ZnS) is used as an interfacial modifier between mesoporous-TiO 2 (mp-TiO 2 ) and a CH 3 NH 3 PbI 3 absorber layer via the successive ionic layer adsorption and reaction method. The layer thickness of ZnS was optimized, and its effects on the conduction band position, interfacial charge recombination, and photovoltaic performance were investigated. Our results revealed that an ultrathin ZnS layer on mp-TiO 2 helps in suppressing backflow of electrons, effectively reducing interfacial charge recombination and facilitating electron transfer. Our best performing perovskite solar cell device using the mp-TiO 2 -ZnS achieved a power conversion efficiency of 14.9%, with an open-circuit voltage of 1.02 V, short-circuit current density of 19.05 mA cm −2 , and fill factor of 75.43%. Our simple ZnS IM approach proves that interface engineering could be a key strategy in improving the performance of perovskite solar cells.

Original languageEnglish
Pages (from-to)405-414
Number of pages10
JournalJournal of Alloys and Compounds
Volume738
DOIs
Publication statusPublished - 2018 Mar 25

Fingerprint

Zinc sulfide
Electrons
Open circuit voltage
Conduction bands
Short circuit currents
Conversion efficiency
Current density
Perovskite solar cells
zinc sulfide
Adsorption

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Shaikh, Shoyebmohamad F. ; Kwon, Hyeok Chan ; Yang, Wooseok ; Mane, Rajaram S. ; Moon, Joo Ho. / Performance enhancement of mesoporous TiO 2 -based perovskite solar cells by ZnS ultrathin-interfacial modification layer In: Journal of Alloys and Compounds. 2018 ; Vol. 738. pp. 405-414.
@article{911fa787a06346668ce2ef1ba6758858,
title = "Performance enhancement of mesoporous TiO 2 -based perovskite solar cells by ZnS ultrathin-interfacial modification layer",
abstract = "Interfacial modification (IM) plays a vital role in boosting the performance of perovskite solar cells. Herein, we demonstrate a new strategy in which zinc sulfide (ZnS) is used as an interfacial modifier between mesoporous-TiO 2 (mp-TiO 2 ) and a CH 3 NH 3 PbI 3 absorber layer via the successive ionic layer adsorption and reaction method. The layer thickness of ZnS was optimized, and its effects on the conduction band position, interfacial charge recombination, and photovoltaic performance were investigated. Our results revealed that an ultrathin ZnS layer on mp-TiO 2 helps in suppressing backflow of electrons, effectively reducing interfacial charge recombination and facilitating electron transfer. Our best performing perovskite solar cell device using the mp-TiO 2 -ZnS achieved a power conversion efficiency of 14.9{\%}, with an open-circuit voltage of 1.02 V, short-circuit current density of 19.05 mA cm −2 , and fill factor of 75.43{\%}. Our simple ZnS IM approach proves that interface engineering could be a key strategy in improving the performance of perovskite solar cells.",
author = "Shaikh, {Shoyebmohamad F.} and Kwon, {Hyeok Chan} and Wooseok Yang and Mane, {Rajaram S.} and Moon, {Joo Ho}",
year = "2018",
month = "3",
day = "25",
doi = "10.1016/j.jallcom.2017.12.199",
language = "English",
volume = "738",
pages = "405--414",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

Performance enhancement of mesoporous TiO 2 -based perovskite solar cells by ZnS ultrathin-interfacial modification layer . / Shaikh, Shoyebmohamad F.; Kwon, Hyeok Chan; Yang, Wooseok; Mane, Rajaram S.; Moon, Joo Ho.

In: Journal of Alloys and Compounds, Vol. 738, 25.03.2018, p. 405-414.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Performance enhancement of mesoporous TiO 2 -based perovskite solar cells by ZnS ultrathin-interfacial modification layer

AU - Shaikh, Shoyebmohamad F.

AU - Kwon, Hyeok Chan

AU - Yang, Wooseok

AU - Mane, Rajaram S.

AU - Moon, Joo Ho

PY - 2018/3/25

Y1 - 2018/3/25

N2 - Interfacial modification (IM) plays a vital role in boosting the performance of perovskite solar cells. Herein, we demonstrate a new strategy in which zinc sulfide (ZnS) is used as an interfacial modifier between mesoporous-TiO 2 (mp-TiO 2 ) and a CH 3 NH 3 PbI 3 absorber layer via the successive ionic layer adsorption and reaction method. The layer thickness of ZnS was optimized, and its effects on the conduction band position, interfacial charge recombination, and photovoltaic performance were investigated. Our results revealed that an ultrathin ZnS layer on mp-TiO 2 helps in suppressing backflow of electrons, effectively reducing interfacial charge recombination and facilitating electron transfer. Our best performing perovskite solar cell device using the mp-TiO 2 -ZnS achieved a power conversion efficiency of 14.9%, with an open-circuit voltage of 1.02 V, short-circuit current density of 19.05 mA cm −2 , and fill factor of 75.43%. Our simple ZnS IM approach proves that interface engineering could be a key strategy in improving the performance of perovskite solar cells.

AB - Interfacial modification (IM) plays a vital role in boosting the performance of perovskite solar cells. Herein, we demonstrate a new strategy in which zinc sulfide (ZnS) is used as an interfacial modifier between mesoporous-TiO 2 (mp-TiO 2 ) and a CH 3 NH 3 PbI 3 absorber layer via the successive ionic layer adsorption and reaction method. The layer thickness of ZnS was optimized, and its effects on the conduction band position, interfacial charge recombination, and photovoltaic performance were investigated. Our results revealed that an ultrathin ZnS layer on mp-TiO 2 helps in suppressing backflow of electrons, effectively reducing interfacial charge recombination and facilitating electron transfer. Our best performing perovskite solar cell device using the mp-TiO 2 -ZnS achieved a power conversion efficiency of 14.9%, with an open-circuit voltage of 1.02 V, short-circuit current density of 19.05 mA cm −2 , and fill factor of 75.43%. Our simple ZnS IM approach proves that interface engineering could be a key strategy in improving the performance of perovskite solar cells.

UR - http://www.scopus.com/inward/record.url?scp=85038835275&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038835275&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2017.12.199

DO - 10.1016/j.jallcom.2017.12.199

M3 - Article

AN - SCOPUS:85038835275

VL - 738

SP - 405

EP - 414

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -