Effects of transition metal dichalcogenide molybdenum disulfide layer formation in copper-zinc-tin-sulfur solar cells from numerical analysis

Puvaneswaran Chelvanathan, Mohammad Istiaque Hossain, Jamilah Husna, Mohammad Alghoul, Kamaruzzaman Sopian, Nowshad Amin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This study demonstrates the effects of transition metal dichalcogenide, MoS 2 layer formation in between the copper-zinc-tin-sulphide (CZTS) absorber layer and Mo back contact from theoretical study and numerical modeling. The objective of this study is to elucidate the effects of n or p type MoS 2 on the overall CZTS solar cell performance. Energy band line-up of Mo/MoS 2/CZTS interface is analyzed to elucidate the interface properties. It is found out that p-MoS 2 layer in CZTS solar cell induces the same adventitious effect as p-MoSe 2 in CIGS solar cell. However, n-MoS 2 layer has detrimental effect on the CZTS solar cell by creating an additional back contact diode with p-CZTS layer and an ohmic contact with Mo layer. Thickness, bandgap energy and carrier concentration of n-MoS 2 all have been varied in the numerical simulation to observe its effects on the cell performance parameters. The results from numerical simulation show that MoS 2 layer as thin as 50nm is sufficient enough to induce adverse effect on the solar cell performance. This could be caused by the increase in series resistance of the solar cell as n-type MoS 2 would inhibit hole current into Mo back contact due to the hole barrier between n-type MoS 2 and Mo back contact. The increase in MoS 2 bandgap and carrier concentration also results in detrimental effect to the performance of the cell mainly due to the possibility of electrons to drift towards the back contact and recombine.

Original languageEnglish
Article number10NC32
JournalJapanese Journal of Applied Physics
Volume51
Issue number10 PART 2
DOIs
Publication statusPublished - Oct 2012

Fingerprint

molybdenum disulfides
Tin
Molybdenum
numerical analysis
Transition metals
Numerical analysis
tin
Solar cells
Zinc
sulfur
Sulfur
zinc
solar cells
transition metals
sulfides
Copper
copper
Carrier concentration
Energy gap
Ohmic contacts

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Effects of transition metal dichalcogenide molybdenum disulfide layer formation in copper-zinc-tin-sulfur solar cells from numerical analysis. / Chelvanathan, Puvaneswaran; Hossain, Mohammad Istiaque; Husna, Jamilah; Alghoul, Mohammad; Sopian, Kamaruzzaman; Amin, Nowshad.

In: Japanese Journal of Applied Physics, Vol. 51, No. 10 PART 2, 10NC32, 10.2012.

Research output: Contribution to journalArticle

Chelvanathan, Puvaneswaran ; Hossain, Mohammad Istiaque ; Husna, Jamilah ; Alghoul, Mohammad ; Sopian, Kamaruzzaman ; Amin, Nowshad. / Effects of transition metal dichalcogenide molybdenum disulfide layer formation in copper-zinc-tin-sulfur solar cells from numerical analysis. In: Japanese Journal of Applied Physics. 2012 ; Vol. 51, No. 10 PART 2.
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