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2021 (English)In: Journal of Energy Chemistry, ISSN 2095-4956, E-ISSN 2096-885X, Vol. 55, p. 211-218Article in journal (Refereed) Published
Abstract [en]
A new crosslinked polymer, called P65, with appropriate photo-electrochemical, opto-electronic, and thermal properties, has been designed and synthesized as an efficient, dopant-free, hole-transport material (HTM) for n-i-p type planar perovskite solar cells (PSCs). P65 is obtained from a low-cost and easily synthesized spiro[fluorene-9,9′-xanthene]-3′,6′-diol (SFX-OH)-based monomer X65 through a free-radical polymerization reaction. The combination of a three-dimensional (3D) SFX core unit, hole-transport methoxydiphenylamine group, and crosslinked polyvinyl network provides P65 with good solubility and excellent film-forming properties. By employing P65 as a dopant-free hole-transport layer in conventional n-i-p type PSCs, a power conversion efficiency (PCE) of up to 17.7% is achieved. To the best of our knowledge, this is the first time a 3D, crosslinked, polymeric dopant-free HTM has been reported for use in conventional n-i-p type PSCs. This study provides a new strategy for the future development of a 3D crosslinked polymeric dopant-free HTM with a simple synthetic route and low-cost for commercial, large-scale applications in future PSCs.
Place, publisher, year, edition, pages
Elsevier BV, 2021
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-279565 (URN)10.1016/j.jechem.2020.06.062 (DOI)000605332900007 ()2-s2.0-85088262081 (Scopus ID)
Note
QC 20201028
2020-08-252020-08-252023-05-25Bibliographically approved