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      Synthesis, structure, and photovoltaic property of a nanocrystalline 2H perovskite-type novel sensitizer (CH 3CH 2NH 3)PbI 3

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          Abstract

          A new nanocrystalline sensitizer with the chemical formula (CH 3CH 2NH 3)PbI 3 is synthesized by reacting ethylammonium iodide with lead iodide, and its crystal structure and photovoltaic property are investigated. X-ray diffraction analysis confirms orthorhombic crystal phase with a = 8.7419(2) Å, b = 8.14745(10) Å, and c = 30.3096(6) Å, which can be described as 2 H perovskite structure. Ultraviolet photoelectron spectroscopy and UV-visible spectroscopy determine the valence band position at 5.6 eV versus vacuum and the optical bandgap of ca. 2.2 eV. A spin coating of the CH 3CH 2NH 3I and PbI 2 mixed solution on a TiO 2 film yields ca. 1.8-nm-diameter (CH 3CH 2NH 3)PbI 3 dots on the TiO 2 surface. The (CH 3CH 2NH 3)PbI 3-sensitized solar cell with iodide-based redox electrolyte demonstrates the conversion efficiency of 2.4% under AM 1.5 G one sun (100 mW/cm 2) illumination.

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          Most cited references9

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          Semiconductor Clusters, Nanocrystals, and Quantum Dots

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                Author and article information

                Journal
                Nanoscale Res Lett
                Nanoscale Res Lett
                Nanoscale Research Letters
                Springer
                1931-7573
                1556-276X
                2012
                28 June 2012
                : 7
                : 1
                : 353
                Affiliations
                [1 ]School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
                [2 ]Department of Chemistry, Division of Energy Systems Research, Ajou University, Suwon, 443-749, Republic of Korea
                Article
                1556-276X-7-353
                10.1186/1556-276X-7-353
                3442983
                22738298
                ac9506d3-20de-4077-88e9-7f13ef4f87ab
                Copyright ©2012 Im et al.; Licensee Springer.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 22 May 2012
                : 17 June 2012
                Categories
                Nano Express

                Nanomaterials
                dye-sensitized solar cell,nanodot,sensitizer,2h perovskite,(ch3ch2nh3)pbi3
                Nanomaterials
                dye-sensitized solar cell, nanodot, sensitizer, 2h perovskite, (ch3ch2nh3)pbi3

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