Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Strong Interplay between Sodium and Oxygen in Kesterite Absorbers: Complex Formation, Incorporation, and Tailoring Depth Distributions
Univ Oslo, Ctr Mat Sci & Nanotechnol, Dept Phys, POB 1048, N-0316 Oslo, Norway.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics. (Ångström Solar Centre)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics. (Ångström Solar Centre)
Univ Oslo, Ctr Mat Sci & Nanotechnol, Dept Phys, POB 1048, N-0316 Oslo, Norway.
Show others and affiliations
2019 (English)In: ADVANCED ENERGY MATERIALS, ISSN 1614-6832, Vol. 9, no 27, article id 1900740Article in journal (Refereed) Published
Abstract [en]

Sodium and oxygen are prevalent impurities in kesterite solar cells. Both elements are known to strongly impact performance of the kesterite devices and can be connected to efficiency improvements seen after heat treatments. The sodium distribution in the kesterite absorber is commonly reported, whereas the oxygen distribution has received less attention. Here, a direct relationship between sodium and oxygen in kesterite absorbers is established using secondary ion mass spectrometry and explained by defect analyses within the density functional theory. The calculations reveal a binding energy of 0.76 eV between the substitutional defects Na-Cu and O-S in the nearest neighbor configuration, indicating an abundance of Na Symbol of the Klingon Empire O complexes in kesterite absorbers at relevant temperatures. Oxygen incorporation is studied by introducing isotopic O-18 at different stages of the Cu2ZnSnS4/Mo/soda-lime glass baseline processing. It is observed that oxygen from the Mo back contact and contaminations during the sulfurization are primary contributors to the oxygen distribution. Indeed, unintentional oxygen incorporation leads to immobilization of sodium. This results in a strong correlation between sodium and oxygen, in excellent agreement with the theoretical calculations. Consequently, oxygen availability should be monitored to optimize postdeposition heat treatments to control impurities in kesterite absorbers and ultimately, the solar cell efficiency.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2019. Vol. 9, no 27, article id 1900740
Keywords [en]
defect complexes, depth distributions, kesterite, oxygen, sodium
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-392870DOI: 10.1002/aenm.201900740ISI: 000477779600002OAI: oai:DiVA.org:uu-392870DiVA, id: diva2:1354747
Funder
Swedish Foundation for Strategic Research The Research Council of Norway, 243642The Research Council of Norway, 245963/F50The Research Council of Norway, 258875Available from: 2019-09-26 Created: 2019-09-26 Last updated: 2019-09-26Bibliographically approved

Open Access in DiVA

fulltext(1392 kB)37 downloads
File information
File name FULLTEXT01.pdfFile size 1392 kBChecksum SHA-512
54ef8064af8593b2aaffde82d1cf624fa328716b498e3f1b3e0bf595c8375c696d02373d462dd4633d31484ab7c0976a760a12ebe6d9c72cb09d303834040a5a
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Sopiha, KostiantynRoss, NilsPlatzer Björkman, Charlotte
By organisation
Solid State Electronics
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 37 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 38 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf