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Electronic Structur...
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Phuyal, Dibya,1985-Uppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Univ, Dept Phys & Astron, Solid State Phys, Angstrom Lab, Box 516, SE-75121 Uppsala, Sweden.
(author)
Electronic Structure of Two-Dimensional Lead(II) Iodide Perovskites : An Experimental and Theoretical Study
- Article/chapterEnglish2018
Publisher, publication year, extent ...
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2018-07-23
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American Chemical Society (ACS),2018
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-361922
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-361922URI
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https://doi.org/10.1021/acs.chemmater.8b00909DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234611URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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De två första författarna delar förstaförfattarskapet.
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QC 20180914
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Layered two-dimensional (2D) hybrid organic-inorganic perovskites (HOP) are promising materials for light-harvesting applications because of their chemical stability, wide flexibility in composition and dimensionality, and increases in photovoltaic power conversion efficiencies. Three 2D lead iodide perovskites were studied through various X-ray spectroscopic techniques to derive detailed electronic structures and band energetics profiles at a titania interface. Core-level and valence band photoelectron spectra of HOP were analyzed to resolve the electronic structure changes due to the reduced dimensionality of inorganic layers. The results show orbital narrowing when comparing the HOP, the layered precursor PbI2, and the conventional 3D (CH3NH3)PbI3 such that different localizations of band edge states and narrow band states are unambiguously due to the decrease in dimensionality of the layered HOPs. Support from density functional theory calculations provide further details on the interaction and band gap variations of the electronic structure. We observed an interlayer distance dependent dispersion in the near band edge electronic states. The results show how tuning the interlayer distance between the inorganic layers affects the electronic properties and provides important design principles for control of the interlayer charge transport properties, such as the change in effective charge masses as a function of the organic cation length. The results of these findings can be used to tune layered materials for optimal functionality and new applications.
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Safdari, MajidKTH,Tillämpad fysikalisk kemi,KTH Royal Institute of Technology,Department of Chemistry(Swepub:kth)u1rz93c9
(author)
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Pazoki, MeysamUppsala universitet,Fasta tillståndets fysik,Uppsala Univ, Dept Engn Sci, Solid State Phys, Angstrom Lab, SE-75121 Uppsala, Sweden.(Swepub:uu)meypa799
(author)
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Liu, PengKTH,Tillämpad materialfysik,Molekylär elektronik, CMD,KTH Royal Institute of Technology,Department of Chemistry(Swepub:kth)u1zkvq1z
(author)
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Philippe, Bertrand,Dr.1986-Uppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Univ, Dept Phys & Astron, Solid State Phys, Angstrom Lab, Box 516, SE-75121 Uppsala, Sweden.(Swepub:uu)phibe331
(author)
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Kvashnina, Kristina O.ESRF, Rossendorf Beamline, CS40220, F-38043 Grenoble 9, France.;HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.
(author)
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Karis, OlofUppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Univ, Dept Phys & Astron, Solid State Phys, Angstrom Lab, Box 516, SE-75121 Uppsala, Sweden.(Swepub:uu)olofkari
(author)
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Butorin, SergeiUppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Univ, Dept Phys & Astron, Solid State Phys, Angstrom Lab, Box 516, SE-75121 Uppsala, Sweden.(Swepub:uu)sergbuto
(author)
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Rensmo, HåkanUppsala universitet,Molekyl- och kondenserade materiens fysik,Uppsala Univ, Dept Phys & Astron, Solid State Phys, Angstrom Lab, Box 516, SE-75121 Uppsala, Sweden.(Swepub:uu)hakanrm
(author)
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Edvinsson, Tomas,1970-Uppsala universitet,Fasta tillståndets fysik,Uppsala Univ, Dept Engn Sci, Solid State Phys, Angstrom Lab, SE-75121 Uppsala, Sweden.(Swepub:uu)tomaedvi
(author)
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Kloo, LarsKTH,Molekylär elektronik, CMD,KTH Royal Institute of Technology,Department of Chemistry(Swepub:kth)u1jrdr1m
(author)
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Gardner, James M.,1982-KTH,Molekylär elektronik, CMD,KTH Royal Institute of Technology(Swepub:kth)u1r55ysm
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Uppsala universitetMolekyl- och kondenserade materiens fysik
(creator_code:org_t)
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In:Chemistry of Materials: American Chemical Society (ACS)30:15, s. 4959-49670897-47561520-5002
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