Dynamics of Electron Transport and Charge Recombination of DSSCs Based on Propeller Shaped Triphenylamine Dyes Using EIS, IMPS, IMVS and Charge Extraction Methods
Muhammed Yoosuf a, Manikkedath Vinayak a, Karical Gopidas a, Thyagarajan Lakshmykanth a, Suraj Soman a, Sourava Pradhan a
a CSIR-NIIST, Photosciences & Photonics Section, Chemical Sciences & Technology Division, CSIR-NIIST, Thiruvananthapuram, 695019, India
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Swansea, United Kingdom, 2016 June 29th - July 1st
Organizers: James Durrant, Henry Snaith and David Worsley
Poster, Suraj Soman, 275
Publication date: 28th March 2016

Abstract

Considering the range of D-π-A dyes employed as sensitizers in DSSC, derivatives of triphenylamines (TPA) occupy a prominent position because of their very high power conversion efficiencies.[1,2,3] Herein we report a series of novel donor-π-acceptor type propeller shaped triphenylamine dyes with multiple donor groups, which were investigated for photophysical, electrochemical as well as dye-sensitized solar cell performance. These dyes have triphenylamine group at the core of the structure acting as the donor moiety which is radially connected to cyanoacrylic acid acceptor groups through phenylethynyl bridges. The propeller shape of the dyes prevent their aggregation on TiO2 surface and give better solar cell performance without the need for any coadsorbents. A detailed study on interfacial charge transfer process has been successfully carried out using Impedance (EIS), photomodulated impedance (IMPS/IMVS) and charge extraction measurements. 

References

[1] A. Hagfeldt, G. Boschloo, L. Sun, L. Kloo and H. Pettersson, Chem. Rev., 2010, 110, 6595–6663

[2] H. Ellis, I. Schmidt, A. Hagfeldt, G. Wittstock, and G. Boschloo,J. Phys. Chem. C., 2015, 119, 21775−21783

[3] M. V. Vinayak, M. Yoosuf, T. M. Lakshmykanth, S. Soman, K. R. Gopidas,  Solar Energy., 2016, 124, 227–241



© FUNDACIO DE LA COMUNITAT VALENCIANA SCITO
We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info