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A new class of epitaxial porphyrin metal-organic framework thin films with extremely high photocarrier generation efficiency: promising materials for all-solid-state solar cells

Liu, Jinxuan and Zhou, Wencai and Liu, Jianxi and Fujimori, Yamato and Higashino, Tomohiro and Imahori, Hiroshi and Jiang, Xue and Zhao, Jijun and Sakurai, Tsuneaki and Hattori, Yusuke and Matsuda, Wakana and Seki, Shu and Garlapati, Suresh Kumar and Dasgupta, Subho and Redel, Engelbert and Sunag, Licheng and Woll, Christof (2016) A new class of epitaxial porphyrin metal-organic framework thin films with extremely high photocarrier generation efficiency: promising materials for all-solid-state solar cells. In: JOURNAL OF MATERIALS CHEMISTRY A, 4 (33). pp. 12739-12747.

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Official URL: http://dx.doi.org/10.1039/c6ta04898f

Abstract

We demonstrate the fabrication of a new class of epitaxial porphyrin metal-organic framework thin films whose photophysical properties can be tuned by the introduction of electron-donating diphenylamine (DPA) groups into the porphyrin skeleton. The attachment of DPA groups results in strongly improved absorption characteristics, yielding the highest photocarrier generation efficiency reported so far. DFT calculations identify a shift of the charge localization pattern in the VBM (lowest unoccupied molecular orbital), confirming that the introduction of the DPA groups is the main reason for the shift of the optical absorption spectrum and the improved photocurrent generation.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 22 Oct 2016 10:26
Last Modified: 22 Oct 2016 10:26
URI: http://eprints.iisc.ac.in/id/eprint/55120

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