Issue 28, 2015

Phosphonic anchoring groups in organic dyes for solid-state solar cells

Abstract

We report the synthesis and the optoelectronic characterization of three new 4H-pyran-4-ylidene and thiazole derivatives (pyt) as metal-free organic dyes for solid-state dye-sensitized solar cells (DSSCs). We investigate the performance and the long-term stability of devices employing pyt dyes functionalized with carboxylic and phosphonic acids as TiO2 anchoring groups. In contrast to reports on liquid electrolyte DSSCs, we show that solid-state DSSCs prepared with phosphoric pyt derivatives can achieve similar power conversion efficiency to their carboxyl analogues. We make use of the Mott–Schottky analysis and equivalent circuit models to demonstrate that a phosphonic group induces a significant increase in built-in voltage at the TiO2-hole transporter interface, which results in a higher open circuit voltage.

Graphical abstract: Phosphonic anchoring groups in organic dyes for solid-state solar cells

Supplementary files

Article information

Article type
Paper
Submitted
08 May 2015
Accepted
08 Jun 2015
First published
08 Jun 2015

Phys. Chem. Chem. Phys., 2015,17, 18780-18789

Phosphonic anchoring groups in organic dyes for solid-state solar cells

A. Abate, R. Pérez-Tejada, K. Wojciechowski, J. M. Foster, A. Sadhanala, U. Steiner, H. J. Snaith, S. Franco and J. Orduna, Phys. Chem. Chem. Phys., 2015, 17, 18780 DOI: 10.1039/C5CP02671G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements