liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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
Efficient perovskite solar cells enabled by ion-modulated grain boundary passivation with a fill factor exceeding 84%
Jilin Univ, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Jilin Univ, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2582-1740
Show others and affiliations
2019 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 7, no 39, p. 22359-22365Article in journal (Refereed) Published
Abstract [en]

Alkali metal cation modulation toward high-electronic-quality perovskite films requires strict control over trap densities in the devices. By introducing tailor-made potassium cation (K+)-functionalized carbon nanodots (CNDs@K) into the perovskite precursor solution, we succeeded in defect passivation and crystallization control of the perovskite film. X-ray diffraction indicated that the binding effect of carbon dots confined the K+ ions in the grain boundary and prevented excessive cations from occupying interstitial sites, thereby reducing the microstrain of the polycrystalline film. Consequently, the synergistic effect of the tailored crystal size and suppressed grain boundary defects could reduce the charge trap density, facilitate charge generation, and lengthen the carrier lifetime, leading to a boosted efficiency of 21.01% with a high fill factor of 84%. This performance is among the best reported for carbon dot-doped PSCs.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2019. Vol. 7, no 39, p. 22359-22365
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-161380DOI: 10.1039/c9ta08081cISI: 000489727600018OAI: oai:DiVA.org:liu-161380DiVA, id: diva2:1367510
Note

Funding Agencies|National Natural Science Foundation of ChinaNational Natural Science Foundation of China [61875072]; Special Project of the Province-University Co-constructing Program of Jilin Province [SXGJXX2017-3]; International Cooperation and Exchange Project of Jilin Province [20170414002GH, 20180414001GH]

Available from: 2019-11-04 Created: 2019-11-04 Last updated: 2019-11-04

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Wang, FengGao, Feng
By organisation
Biomolecular and Organic ElectronicsFaculty of Science & Engineering
In the same journal
Journal of Materials Chemistry A
Inorganic Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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