Publicación:
Determination of the complex refractive index and optical bandgap of CH3NH3PbI3 thin films
Determination of the complex refractive index and optical bandgap of CH3NH3PbI3 thin films
| dc.contributor.author | Guerra, J. A. | es_PE |
| dc.contributor.author | Tejada, A. | es_PE |
| dc.contributor.author | Korte, L. | es_PE |
| dc.contributor.author | Kegelmann, L. | es_PE |
| dc.contributor.author | Tofflinger, J. A. | es_PE |
| dc.contributor.author | Albrecht, S. | es_PE |
| dc.contributor.author | Rech, B. | es_PE |
| dc.contributor.author | Weingartner, R. | es_PE |
| dc.date.accessioned | 2024-05-30T23:13:38Z | |
| dc.date.available | 2024-05-30T23:13:38Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | We report the complex refractive index of methylammonium lead iodide (CH3NH3PbI3) perovskite thin films obtained by means of variable angle spectroscopic ellipsometry and transmittance/reflectance spectrophotometry in the wavelength range of 190 nm to 2500 nm. The film thickness and roughness layer thickness are determined by minimizing a global unbiased estimator in the region where the spectrophotometry and ellipsometry spectra overlap. We then determine the optical bandgap and Urbach energy from the absorption coefficient, by means of a fundamental absorption model based on band fluctuations in direct semiconductors. This model merges both the Urbach tail and the absorption edge regions in a single equation. In this way, we increase the fitting region and extend the conventional (αℏω)2-plot method to obtain accurate bandgap values. © 2017 Author(s). | |
| dc.description.sponsorship | Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec | |
| dc.identifier.doi | https://doi.org/10.1063/1.4982894 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12390/2887 | |
| dc.language.iso | eng | |
| dc.publisher | AIP Publishing | |
| dc.relation.ispartof | JOURNAL OF APPLIED PHYSICS | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.subject | General Physics and Astronomy | |
| dc.subject.ocde | http://purl.org/pe-repo/ocde/ford#2.11.02 | |
| dc.title | Determination of the complex refractive index and optical bandgap of CH3NH3PbI3 thin films | |
| dc.type | info:eu-repo/semantics/article | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | #PLACEHOLDER_PARENT_METADATA_VALUE# | |
| oairecerif.author.affiliation | #PLACEHOLDER_PARENT_METADATA_VALUE# | |
| oairecerif.author.affiliation | #PLACEHOLDER_PARENT_METADATA_VALUE# | |
| oairecerif.author.affiliation | #PLACEHOLDER_PARENT_METADATA_VALUE# |