dc.contributor.author |
Kumlangwan P. |
|
dc.contributor.author |
Suksangrat P. |
|
dc.contributor.author |
Towannang M. |
|
dc.contributor.author |
Faibut N. |
|
dc.contributor.author |
Harnchana V. |
|
dc.contributor.author |
Srepusharawoot P. |
|
dc.contributor.author |
Chompoosor A. |
|
dc.contributor.author |
Kumnorkaew P. |
|
dc.contributor.author |
Jarernboon W. |
|
dc.contributor.author |
Pimanpang S. |
|
dc.contributor.author |
Amornkitbamrung V. |
|
dc.date.accessioned |
2021-04-05T03:03:54Z |
|
dc.date.available |
2021-04-05T03:03:54Z |
|
dc.date.issued |
2020 |
|
dc.identifier.issn |
3744884 |
|
dc.identifier.other |
2-s2.0-85096310998 |
|
dc.identifier.uri |
https://ir.swu.ac.th/jspui/handle/123456789/12510 |
|
dc.identifier.uri |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096310998&doi=10.3938%2fjkps.77.1210&partnerID=40&md5=38df294ea6accf85afe025fcb1a61936 |
|
dc.description.abstract |
CH3NH3Pb(SCN)xI3−x films were prepared using a hot-casting method with five different Pb(SCN)2/PbI2 levels (x = 0, 0.25, 0.5, 1 and 2). Substitution of SCN− in the CH3NH3PbI3 structures induces a film color transformation from black to yellow. UV vis spectra of CH3NH3Pb(SCN)xI3−x films display an increased band gap from 1.59 eV (pure CH3NH3PbI3 film) to 2.37 eV (MAPb(SCN)2I films). Experimental XRD spectra of CH3NH3Pb(SCN)xI3−x films for increasing SCN− levels show a reduced angle of the (110) plane in the same trend as for the simulated tetragonal CH3NH3Pb(SCN)xI3−x structures. The calculated bandgap of simulated tetragonal CH3NH3Pb(SCN)xI3−x structures also increases with the SCN− concentration. Maximal efficiency, 4.56%, was gained from a carbon-based hole-transport layer (HTL)-free CH3NH3PbI3 (x = 0) perovskite solar cell. This is attributed to the low bandgap of CH3NH3PbI3 (1.59 eV). Although, the efficiency of the carbon-based HTL-free CH3NH3Pb(SCN)xI3−x solar cells decreases with increasing SCN− ratio, the excellent solar cell stability was obtained from carbon-based HTL-free CH3NH3Pb(SCN)xI3−x (x = 0.25, 0.5, 1 and 2) solar cells. This should be influenced by the presence of the hydrogen bonds between H and S and/or H and N in the CH3NH3Pb(SCN)xI3−x structures. The carbon-based HTL-free CH3NH3Pb(SCN)0.5I2.5 solar cell delivers a promising efficiency of 3.07%, and its efficiency increases by 11.40% of its initial value after 30-day storage. © 2020, The Korean Physical Society. |
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dc.rights |
Srinakharinwirot University |
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dc.title |
Calculation and Fabrication of a CH3NH3Pb(SCN)xI3−x Perovskite Film as a Light Absorber in Carbon-based Hole-transport-layer-free Perovskite Solar Cells |
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dc.type |
Article |
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dc.rights.holder |
Scopus |
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dc.identifier.bibliograpycitation |
Journal of the Korean Physical Society. Vol 77, No.12 (2020), p.1210-1217 |
|
dc.identifier.doi |
10.3938/jkps.77.1210 |
|