For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
11
views
9
references
 Top references
cited by
8
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      132
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Clean, cleaved surfaces of the photovoltaic perovskite

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The surface of a material is not only a window into its bulk physical properties, but also hosts unique phenomena important for understanding the properties of a solid as a whole. Surface sensitive techniques, like ARPES (Angle-resolved photoemission spectroscopy), STM (Scanning tunneling microscopy), AFM (Atomic force microscopy), pump-probe optical measurements etc. require flat, clean surfaces. These can be obtained by cleaving, which is usually possible for layered materials. Such measurements have proven their worth by providing valuable information about cuprate superconductors, graphene, transition metal dichalcogenides, topological insulators and many other novel materials. Unfortunately, this was so far not the case for the cubic, organo-metallic photovoltaic perovskite which morsels during the cleavage. Here we show a method which results in flat, clean surfaces of CH 3NH 3PbBr 3 which allows surface sensitive measurements, badly needed for the understanding and further engineering of this material family.

          Related collections

          Most cited references9

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization

          Makhsud Saidaminov, Ahmed Abdelhady, Banavoth Murali … (2015)
          Single crystals of methylammonium lead trihalide perovskites (MAPbX3; MA=CH3NH3 +, X=Br− or I−) have shown remarkably low trap density and charge transport properties; however, growth of such high-quality semiconductors is a time-consuming process. Here we present a rapid crystal growth process to obtain MAPbX3 single crystals, an order of magnitude faster than previous reports. The process is based on our observation of the substantial decrease of MAPbX3 solubility, in certain solvents, at elevated temperatures. The crystals can be both size- and shape-controlled by manipulating the different crystallization parameters. Despite the rapidity of the method, the grown crystals exhibit transport properties and trap densities comparable to the highest quality MAPbX3 reported to date. The phenomenon of inverse or retrograde solubility and its correlated inverse temperature crystallization strategy present a major step forward for advancing the field on perovskite crystallization.
          Article 0 comments Cited 485 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Trap states in lead iodide perovskites.

            Xiaoxi Wu, M Tuan Trinh, Daniel Niesner … (2015)
            Recent discoveries of highly efficient solar cells based on lead iodide perovskites have led to a surge in research activity on understanding photo carrier generation in these materials, but little is known about trap states that may be detrimental to solar cell performance. Here we provide direct evidence for hole traps on the surfaces of three-dimensional (3D) CH3NH3PbI3 perovskite thin films and excitonic traps below the optical gaps in these materials. The excitonic traps possess weak optical transition strengths, can be populated from the relaxation of above gap excitations, and become more significant as dimensionality decreases from 3D CH3NH3PbI3 to two-dimensional (2D) (C4H9NH3I)2(CH3NH3I)(n-1)(PbI2)(n) (n = 1, 2, 3) perovskites and, within the 2D family, as n decreases from 3 to 1. We also show that the density of excitonic traps in CH3NH3PbI3 perovskite thin films grown in the presence of chloride is at least one-order of magnitude lower than that grown in the absence of chloride, thus explaining a widely known mystery on the much better solar cell performance of the former. The trap states are likely caused by electron-phonon coupling and are enhanced at surfaces/interfaces where the perovskite crystal structure is most susceptible to deformation.
            Article 0 comments Cited 244 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Retrograde solubility of formamidinium and methylammonium lead halide perovskites enabling rapid single crystal growth.

              Makhsud Saidaminov, Ahmed Abdelhady, Giacomo Maculan … (2015)
              Here we show the retrograde solubility of various hybrid perovskites through the correct choice of solvent(s) and report their solubility curves. Retrograde solubility enables to develop inverse temperature crystallization of FAPbX3 (FA = HC(NH2)2(+), X = Br(-)/I(-)). FAPbI3 crystals exhibit a 1.4 eV bandgap--considerably narrower than their polycrystalline counterparts.
              Article 0 comments Cited 118 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Contributors
                László Forró: laszlo.forro@epfl.ch
                Journal
                Journal ID (nlm-ta): Sci Rep
                Journal ID (iso-abbrev): Sci Rep
                Title: Scientific Reports
                Publisher: Nature Publishing Group UK (London )
                ISSN (Electronic): 2045-2322
                Publication date (Electronic): 6 April 2017
                Publication date PMC-release: 6 April 2017
                Publication date Collection: 2017
                Volume: 7
                Electronic Location Identifier: 695
                Affiliations
                [1 ]GRID grid.5333.6, Institute of Physics, , Ecole Polytechnique Fédérale de Lausanne, ; CH-1015 Lausanne, Switzerland
                [2 ]GRID grid.5991.4, Swiss Light Source, , Paul Scherrer Institute, ; CH-5232 Villigen, Switzerland
                [3 ]GRID grid.5333.6, Institute of Chemical Sciences and Engineering, , Ecole Polytechnique Fédérale de Lausanne, ; CH-1015 Lausanne, Switzerland
                Author information
                http://orcid.org/0000-0002-8832-8865
                Article
                Publisher ID: 799
                DOI: 10.1038/s41598-017-00799-0
                PMC ID: 5429655
                PubMed ID: 28386124
                SO-VID: ab63c681-f4c0-4a2b-a226-253c60d9c6b1
                Copyright © © The Author(s) 2017
                License:

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                Date received : 12 December 2016
                Date accepted : 13 March 2017
                Categories
                Subject: Article
                Custom metadata
                issue-copyright-statement © The Author(s) 2017

                ScienceOpen disciplines: Uncategorized
                Data availability:
                ScienceOpen disciplines: Uncategorized

                Comments

                Comment on this article

                scite_

                Similar content132

                See all similar

                Cited by8

                See all cited by

                Most referenced authors893

                See all reference authors