Issue 23, 2014

Layer-by-layer deposition and photovoltaic property of Ru-based metal–organic frameworks

Abstract

In the present work, thin films of ruthenium based metal–organic frameworks are synthesized using a layer-by-layer (LbL) technique and the film is characterized using XRD, FE-SEM, UV/visible spectroscopy, cyclic voltammetry and photoluminance spectroscopy. Further, the feasibility of the MOF film as a sensitizer in a solar cell is investigated. The HOMO–LUMO level of the frameworks is estimated and is found to be suitable to allow the use of the frameworks as a sensitizer for TiO2. When TiO2 mesoporous film is sensitized with the LBL thin film of the frameworks and a Grätzel type liquid junction solar cell is constructed, it demonstrates the cell performance of Isc = 2.56 mA cm−2, Voc = 0.63 V, FF = 0.63, and Eff = 1.22%. Photoluminescence spectroscopy and electrochemical impedance spectroscopy show that iodine doping into the frameworks is essential to facilitate the photogenerated electron transfer from the frameworks to TiO2.

Graphical abstract: Layer-by-layer deposition and photovoltaic property of Ru-based metal–organic frameworks

Supplementary files

Article information

Article type
Communication
Submitted
15 Jan 2014
Accepted
13 Feb 2014
First published
13 Feb 2014

RSC Adv., 2014,4, 12037-12042

Layer-by-layer deposition and photovoltaic property of Ru-based metal–organic frameworks

D. Y. Lee, E. Kim, C. Y. Shin, D. V. Shinde, W. Lee, N. K. Shrestha, J. K. Lee and S. Han, RSC Adv., 2014, 4, 12037 DOI: 10.1039/C4RA00397G

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