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dc.contributor.authorKomesu, Takashi
dc.contributor.authorHuang, Xin
dc.contributor.authorPaudel, Tula R.
dc.contributor.authorLosovyj, Yaroslav B.
dc.contributor.authorZhang, Xin
dc.contributor.authorSchwier, Eike F.
dc.contributor.authorKojima, Yohei
dc.contributor.authorZheng, Mingtian
dc.contributor.authorIwasawa, Hideaki
dc.contributor.authorShimada, Kenya
dc.contributor.authorSaidaminov, Makhsud I.
dc.contributor.authorShi, Dong
dc.contributor.authorAbdelhady, Ahmed L.
dc.contributor.authorBakr, Osman
dc.contributor.authorDong, Shuai
dc.contributor.authorTsymbal, Evgeny Y.
dc.contributor.authorDowben, Peter A.
dc.date.accessioned2017-01-02T09:28:33Z
dc.date.available2017-01-02T09:28:33Z
dc.date.issued2016-09-12
dc.identifier.citationKomesu T, Huang X, Paudel TR, Losovyj YB, Zhang X, et al. (2016) Surface Electronic Structure of Hybrid Organo Lead Bromide Perovskite Single Crystals. The Journal of Physical Chemistry C 120: 21710–21715. Available: http://dx.doi.org/10.1021/acs.jpcc.6b08329.
dc.identifier.issn1932-7447
dc.identifier.issn1932-7455
dc.identifier.doi10.1021/acs.jpcc.6b08329
dc.identifier.urihttp://hdl.handle.net/10754/622475
dc.description.abstractThe electronic structure and band dispersion of methylammonium lead bromide, CH3NH3PbBr3, has been investigated through a combination of angle-resolved photoemission spectroscopy (ARPES) and inverse photoemission spectroscopy (IPES), as well as theoretical modeling based on density functional theory. The experimental band structures are consistent with the density functional calculations. The results demonstrate the presence of a dispersive valence band in MAPbBr3 that peaks at the M point of the surface Brillouin zone. The results also indicate that the surface termination of the CH3NH3PbBr3 is the methylammonium bromide (CH3NH3Br) layer. We find our results support models that predict a heavier hole effective mass in the region of -0.23 to -0.26 me, along the Γ (surface Brillouin center) to M point of the surface Brillouin zone. The surface appears to be n-type as a result of an excess of lead in the surface region. © 2016 American Chemical Society.
dc.description.sponsorshipThis work was supported by the National Science Foundation through the Nebraska MRSEC (Grant DMR-1420645) and the Nebraska Center for Energy Science Research as well as KAUST. Facility use at HiSOR based on HiSOR proposal number 15-A-18 is acknowledged. E.F.S acknowledges financial support from the JSPS postdoctoral fellowship for overseas researchers as well as the Alexander von Humboldt Foundation (Grant P13783). X.H. was supported by the China Scholarship Council.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b08329
dc.titleSurface Electronic Structure of Hybrid Organo Lead Bromide Perovskite Single Crystals
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalThe Journal of Physical Chemistry C
dc.contributor.institutionDepartment of Physics and Astronomy, Jorgensen Hall, University of Nebraska-Lincoln, 855 North 16th Street, Lincoln, NE, United States
dc.contributor.institutionDepartment of Physics, Southeast University, Nanjing, China
dc.contributor.institutionDepartment of Chemistry, Indiana University, A421C 800 E. Kirkwood Ave., Bloomington, IN, United States
dc.contributor.institutionHiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Japan
dc.contributor.institutionGraduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan
kaust.personSaidaminov, Makhsud I.
kaust.personShi, Dong
kaust.personAbdelhady, Ahmed L.
kaust.personBakr, Osman M.
dc.date.published-online2016-09-12
dc.date.published-print2016-09-29


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