Blog
About

3
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Impact of Monovalent Cation Halide Additives on the Structural and Optoelectronic Properties of CH3NH3PbI3Perovskite

      Read this article at

      ScienceOpenPublisher
      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.

          Related collections

          Most cited references 22

          • Record: found
          • Abstract: not found
          • Article: not found

          Synthesis and crystal chemistry of the hybrid perovskite (CH3NH3)PbI3 for solid-state sensitised solar cell applications

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Kelvin probe force microscopy

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance.

              Solar cells based on organometallic halide perovskite absorber layers are emerging as a high-performance photovoltaic technology. Using highly sensitive photothermal deflection and photocurrent spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite thin films at room temperature. We find a high absorption coefficient with particularly sharp onset. Below the bandgap, the absorption is exponential over more than four decades with an Urbach energy as small as 15 meV, which suggests a well-ordered microstructure. No deep states are found down to the detection limit of ∼1 cm(-1). These results confirm the excellent electronic properties of perovskite thin films, enabling the very high open-circuit voltages reported for perovskite solar cells. Following intentional moisture ingress, we find that the absorption at photon energies below 2.4 eV is strongly reduced, pointing to a compositional change of the material.
                Bookmark

                Author and article information

                Journal
                Advanced Energy Materials
                Adv. Energy Mater.
                Wiley
                16146832
                May 2016
                May 2016
                March 17 2016
                : 6
                : 10
                : 1502472
                Affiliations
                [1 ]Cavendish Laboratory; Department of Physics; University of Cambridge; JJ Thomson Avenue Cambridge CB3 0HE UK
                [2 ]Laboratory of Photonics and Interfaces; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne; CH-1015 Lausanne Switzerland
                [3 ]Center for Physical Sciences and Technology; Savanoriu˛ Ave. 231 LT-02300 Vilnius Lithuania
                [4 ]Group for Molecular Engineering of Functional Materials; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne; CH-1015 Lausanne Switzerland
                Article
                10.1002/aenm.201502472
                © 2016
                Product

                Comments

                Comment on this article