Liquid phase assisted grain growth in Cu2ZnSnS4 nanoparticle thin films by alkali element incorporation

Sara Lena Josefin Engberg*, Stela Canulescu, Jørgen Schou

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The effect of adding LiCl, NaCl, and KCl to Cu2ZnSnS4 (CZTS) nanoparticle thin-film samples annealed in a nitrogen and sulfur atmosphere is reported. We demonstrate that the organic ligand-free nanoparticles previously developed can be used to produce an absorber layer of high quality. The films were Zn-rich and Cu-poor, and no secondary phases except ZnS could be detected within the detection limit of the characterization tools used. Potassium was the most effective alkali metal to enhance grain growth, and resulted in films with a high photoluminescence signal and an optical band gap of 1.43 eV. The alkali metals were introduced in the form of chloride salts, and a significant amount of Cl was detected in the final films, but could be removed in a quick water rinse.
Original languageEnglish
JournalR S C Advances
Volume8
Issue number13
Pages (from-to)7152-7158
ISSN2046-2069
DOIs
Publication statusPublished - 2018

Keywords

  • Chemistry (all)
  • Chemical Engineering (all)
  • Chlorine compounds
  • Copper
  • Copper compounds
  • Energy gap
  • II-VI semiconductors
  • Lithium compounds
  • Nanoparticles
  • Potassium compounds
  • Sodium chloride
  • Thin films
  • Tin compounds
  • Zinc sulfide
  • Absorber layers
  • Alkali elements
  • Characterization tools
  • Detection limits
  • Organic ligands
  • Photoluminescence signals
  • Secondary phasis
  • Sulfur atmosphere
  • Grain growth

Cite this

@article{81cb4cf8c19c49599c8b9fa023dfc4c3,
title = "Liquid phase assisted grain growth in Cu2ZnSnS4 nanoparticle thin films by alkali element incorporation",
abstract = "The effect of adding LiCl, NaCl, and KCl to Cu2ZnSnS4 (CZTS) nanoparticle thin-film samples annealed in a nitrogen and sulfur atmosphere is reported. We demonstrate that the organic ligand-free nanoparticles previously developed can be used to produce an absorber layer of high quality. The films were Zn-rich and Cu-poor, and no secondary phases except ZnS could be detected within the detection limit of the characterization tools used. Potassium was the most effective alkali metal to enhance grain growth, and resulted in films with a high photoluminescence signal and an optical band gap of 1.43 eV. The alkali metals were introduced in the form of chloride salts, and a significant amount of Cl was detected in the final films, but could be removed in a quick water rinse.",
keywords = "Chemistry (all), Chemical Engineering (all), Chlorine compounds, Copper, Copper compounds, Energy gap, II-VI semiconductors, Lithium compounds, Nanoparticles, Potassium compounds, Sodium chloride, Thin films, Tin compounds, Zinc sulfide, Absorber layers, Alkali elements, Characterization tools, Detection limits, Organic ligands, Photoluminescence signals, Secondary phasis, Sulfur atmosphere, Grain growth",
author = "Engberg, {Sara Lena Josefin} and Stela Canulescu and J{\o}rgen Schou",
year = "2018",
doi = "10.1039/c7ra13472j",
language = "English",
volume = "8",
pages = "7152--7158",
journal = "R S C Advances",
issn = "2046-2069",
publisher = "RSC Publishing",
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}

Liquid phase assisted grain growth in Cu2ZnSnS4 nanoparticle thin films by alkali element incorporation. / Engberg, Sara Lena Josefin; Canulescu, Stela; Schou, Jørgen.

In: R S C Advances, Vol. 8, No. 13, 2018, p. 7152-7158.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Liquid phase assisted grain growth in Cu2ZnSnS4 nanoparticle thin films by alkali element incorporation

AU - Engberg, Sara Lena Josefin

AU - Canulescu, Stela

AU - Schou, Jørgen

PY - 2018

Y1 - 2018

N2 - The effect of adding LiCl, NaCl, and KCl to Cu2ZnSnS4 (CZTS) nanoparticle thin-film samples annealed in a nitrogen and sulfur atmosphere is reported. We demonstrate that the organic ligand-free nanoparticles previously developed can be used to produce an absorber layer of high quality. The films were Zn-rich and Cu-poor, and no secondary phases except ZnS could be detected within the detection limit of the characterization tools used. Potassium was the most effective alkali metal to enhance grain growth, and resulted in films with a high photoluminescence signal and an optical band gap of 1.43 eV. The alkali metals were introduced in the form of chloride salts, and a significant amount of Cl was detected in the final films, but could be removed in a quick water rinse.

AB - The effect of adding LiCl, NaCl, and KCl to Cu2ZnSnS4 (CZTS) nanoparticle thin-film samples annealed in a nitrogen and sulfur atmosphere is reported. We demonstrate that the organic ligand-free nanoparticles previously developed can be used to produce an absorber layer of high quality. The films were Zn-rich and Cu-poor, and no secondary phases except ZnS could be detected within the detection limit of the characterization tools used. Potassium was the most effective alkali metal to enhance grain growth, and resulted in films with a high photoluminescence signal and an optical band gap of 1.43 eV. The alkali metals were introduced in the form of chloride salts, and a significant amount of Cl was detected in the final films, but could be removed in a quick water rinse.

KW - Chemistry (all)

KW - Chemical Engineering (all)

KW - Chlorine compounds

KW - Copper

KW - Copper compounds

KW - Energy gap

KW - II-VI semiconductors

KW - Lithium compounds

KW - Nanoparticles

KW - Potassium compounds

KW - Sodium chloride

KW - Thin films

KW - Tin compounds

KW - Zinc sulfide

KW - Absorber layers

KW - Alkali elements

KW - Characterization tools

KW - Detection limits

KW - Organic ligands

KW - Photoluminescence signals

KW - Secondary phasis

KW - Sulfur atmosphere

KW - Grain growth

U2 - 10.1039/c7ra13472j

DO - 10.1039/c7ra13472j

M3 - Journal article

VL - 8

SP - 7152

EP - 7158

JO - R S C Advances

JF - R S C Advances

SN - 2046-2069

IS - 13

ER -