Room temperature preparation of delta-phase CsSn1-xPbxI3 films for hole-transport in solid-state dye-sensitized solar cells. Ardchongtong, P., Kumlangwan, P., Towannang, M., Suksangrat, P., Srepusharawoot, P., Prachumrak, N., Klangtakai, P., Pimanpang, S., Promarak, V., & Amornkitbamrung, V. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 29(9):7811-7819, MAY, 2018.
doi  abstract   bibtex   
CsSn1-xPbxI3 films were prepared from mixed CsI, SnI2 and/or PbI2 solutions at five different Pb/Sn ratios (x = 0, 0.2, 0.5, 0.8 and 1) at room temperature. The color of the CsSn1-xPbxI3 films varied with their Pb/Sn ratios. At a Pb/Sn ratio of 0.5, CsSn0.5Pb0.5I3 had the darkest color, whereas films at other Pb/Sn ratios displayed dark brown or yellowish colors. The XRD spectra of the as-prepared CsSn1-xPbxI3 films matched the delta-phase (yellow-phase) nonperovskite structure quite well. Solid-state dye-sensitized solar cells (S-DSSCs) were assembled by directly dropping the mixed CsI, SnI2 and/or PbI2 solution onto TiO2-coated-dye electrodes and drying them at room temperature. A CsSn0.5Pb0.5I3 based S-DSSC generated the highest efficiency (3.47%) of the five conditions (CsSn1-xPbxI3, x = 0, 0.2, 0.5, 0.8 and 1). This is attributed to the dark color and good continuity of the CsSn0.5Pb0.5I3 film, its high shunt-resistance (10,377.10 a''broken vertical bar) and high incident-photon collecting efficiency of CsSn0.5Pb0.5I3 based S-DSSCs.
@article{ ISI:000429798300089,
Author = {Ardchongtong, Pornpanarat and Kumlangwan, Pantiwa and Towannang,
   Madsakorn and Suksangrat, Pitphichaya and Srepusharawoot, Pornjuk and
   Prachumrak, Narid and Klangtakai, Pawinee and Pimanpang, Samuk and
   Promarak, Vinich and Amornkitbamrung, Vittaya},
Title = {{Room temperature preparation of delta-phase CsSn1-xPbxI3 films for
   hole-transport in solid-state dye-sensitized solar cells}},
Journal = {{JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS}},
Year = {{2018}},
Volume = {{29}},
Number = {{9}},
Pages = {{7811-7819}},
Month = {{MAY}},
Abstract = {{CsSn1-xPbxI3 films were prepared from mixed CsI, SnI2 and/or PbI2
   solutions at five different Pb/Sn ratios (x = 0, 0.2, 0.5, 0.8 and 1) at
   room temperature. The color of the CsSn1-xPbxI3 films varied with their
   Pb/Sn ratios. At a Pb/Sn ratio of 0.5, CsSn0.5Pb0.5I3 had the darkest
   color, whereas films at other Pb/Sn ratios displayed dark brown or
   yellowish colors. The XRD spectra of the as-prepared CsSn1-xPbxI3 films
   matched the delta-phase (yellow-phase) nonperovskite structure quite
   well. Solid-state dye-sensitized solar cells (S-DSSCs) were assembled by
   directly dropping the mixed CsI, SnI2 and/or PbI2 solution onto
   TiO2-coated-dye electrodes and drying them at room temperature. A
   CsSn0.5Pb0.5I3 based S-DSSC generated the highest efficiency (3.47\%) of
   the five conditions (CsSn1-xPbxI3, x = 0, 0.2, 0.5, 0.8 and 1). This is
   attributed to the dark color and good continuity of the CsSn0.5Pb0.5I3
   film, its high shunt-resistance (10,377.10 a{''}broken vertical bar) and
   high incident-photon collecting efficiency of CsSn0.5Pb0.5I3 based
   S-DSSCs.}},
DOI = {{10.1007/s10854-018-8780-2}},
ISSN = {{0957-4522}},
EISSN = {{1573-482X}},
Unique-ID = {{ISI:000429798300089}},
}

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