Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142813
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dc.contributor.authorChen, Xiaoxuanen_US
dc.contributor.authorWang, Yueen_US
dc.contributor.authorSong, Jizhongen_US
dc.contributor.authorLi, Xiaomingen_US
dc.contributor.authorXu, Jiayueen_US
dc.contributor.authorZeng, Haiboen_US
dc.contributor.authorSun, Handongen_US
dc.date.accessioned2020-07-02T07:23:51Z-
dc.date.available2020-07-02T07:23:51Z-
dc.date.issued2019-
dc.identifier.citationChen, X., Wang, Y., Song, J., Li, X., Xu, J., Zeng, H., & Sun, H. (2019). Temperature dependent reflectance and ellipsometry studies on a CsPbBr3 single crystal. The Journal of Physical Chemistry C, 123(16), 10564-10570. doi:10.1021/acs.jpcc.9b01406en_US
dc.identifier.issn1932-7447en_US
dc.identifier.urihttps://hdl.handle.net/10356/142813-
dc.description.abstractInorganic halide perovskites have attracted enormous interest in recent years owing to their remarkable properties for next-generation optoelectronics. Yet their basic optical properties have been rarely explored, which failed to meet the demand of accelerating the progress of this emerging field. In this work, temperature dependent reflection spectroscopy and ellipsometry were carried out on a CsPbBr3 bulk perovskite single crystal. Two discernible optical transitions at around 2.4 and 3.4 eV with opposite temperature dependence are observed, indicating the complexity of the carrier-phonon scattering process in perovskites. The intrinsic transition energy, exciton–phonon interaction, exciton polariton and strong oscillator strength (∼1.3 × 1030 rad2/s2) of the three-dimensional Wannier–Mott excitons are revealed. We have acquired by ellipsometry measurement the wavelength dependent dielectric constants and the complex refractive indices that are vital for informed optical designs to achieve device performance optimization. Furthermore, the essential and elemental optical properties such as absorption coefficient, absorption cross-section, optical conductivity, and dispersion relation of CsPbBr3 are obtained. These parameters give insights into both fundamental physics and practical applications of CsPbBr3 perovskites. This work unveils the photophysics of inorganic perovskites as well as offers approaches to identify the optical transitions and extract essential physical parameters, which can be utilized to explore other perovskite materials and nanostructures.en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.language.isoenen_US
dc.relation.ispartofThe Journal of Physical Chemistry Cen_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcc.9b01406en_US
dc.subjectScience::Physicsen_US
dc.titleTemperature dependent reflectance and ellipsometry studies on a CsPbBr3 single crystalen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.organizationCentre for Disruptive Photonic Technologiesen_US
dc.contributor.organizationMajuLaben_US
dc.identifier.doi10.1021/acs.jpcc.9b01406-
dc.description.versionAccepted versionen_US
dc.identifier.scopus2-s2.0-85065094161-
dc.identifier.issue16en_US
dc.identifier.volume123en_US
dc.identifier.spage10564en_US
dc.identifier.epage10570en_US
dc.subject.keywordsOptoelectronicsen_US
dc.subject.keywordsExcitonsen_US
item.grantfulltextopen-
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