Structure and function relationships in alkylammonium lead(II) iodide solar cells
2015 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 3, no 17, 9201-9207 p.Article in journal (Refereed) Published
Alkylammonium lead(ii) iodide materials (APbI<inf>3</inf>), based on the general formula of CH<inf>3</inf>-(CH<inf>2</inf>)<inf>n</inf>-NH<inf>3</inf>PbI<inf>3</inf>, may lead to a monumental leap in developing affordable photovoltaics. Herein, we correlate the structure and function relationships of alkylammonium lead(ii) iodide in solar cells. We investigated changes in the structure of APbI<inf>3</inf> materials by varying the alkylammonium cations in their structure. As the size of the alkylammonium cation increased, the crystallographic unit cell increased in size and yielded lower symmetry crystals. High symmetry materials, those with cubic symmetry, showed the highest conductivity, the smallest bandgap, and produced the best performing solar cells. Structural changes were investigated by X-ray crystallography, X-ray powder diffraction, and Raman scattering.
Place, publisher, year, edition, pages
2015. Vol. 3, no 17, 9201-9207 p.
Crystal symmetry, Crystallography, Positive ions, Solar cells, X ray powder diffraction, Alkylammonium, Alkylammonium cations, Cubic symmetry, General formulas, High symmetry, Photovoltaics, Structure and function relationship, Unit cells, X ray crystallography
IdentifiersURN: urn:nbn:se:kth:diva-167713DOI: 10.1039/c4ta06174hISI: 000353420800036ScopusID: 2-s2.0-84928473302OAI: oai:DiVA.org:kth-167713DiVA: diva2:815881
FunderSwedish Energy AgencyKnut and Alice Wallenberg FoundationSwedish Research Council
Correction in: Journal of Materials Chemistry A, vol. 3, issue 17, page 9317. Doi: 10.1039/c5ta90073e, WOS: 000353420800051, Scopus: 2-s2.0-849284855902015-06-022015-05-222015-08-07Bibliographically approved