Surface Engineering of Solid-State Dye-Sensitized Solar Cells
Rosie Anthony a, Arthur Connell a, Leo Furnell a, Chris Kershaw a, Diana Mesarojas a, Eurig Jones a, Dawn Geatches b, Sebastian Metz b, Kakali Sen b, Peter Holliman a
a College of Engineering, Swansea University, UK, Bay Campus, Swansea SA1 8EN, United Kingdom
b Scientific Computing Department, STFC Daresbury Laboratory, Daresbury, Warrington, UK
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Roma, Italy, 2019 May 12th - 15th
Organizers: Prashant Kamat, Filippo De Angelis and Aldo Di Carlo
Poster, Rosie Anthony, 223
Publication date: 11th February 2019

The way that molecules interact with interfaces play a key role in the manufacture and performance of solid-state dye-sensitized solar cells (ssDSC).  In order to maximise the performance of ssDSC, it is important to understand the interactions and to subsequently optimise them.  The key interactions within the process, are the wetting and subsequent dyeing of the TiO2 layer by immersion dyeing, ultra-fast pump dyeing or spin coating. During the device making process, the dyes will arrange themselves in the configuration that results from lowest energy orientation, even if this is less favourable in terms of device performance,1, 2, 3

This paper will describe our current investigation into the effect of thickness of the TiO2 layer on dye loading and device performance (Figure 1).

Figure 1. (a) the dyes used (left to right) L1, D35, LEG 4, R6, SQ2; (b) dyed electrodes of differing TiO2 thicknesses (top to bottom, different dye treatments: L1, D35, LEG 4, R6 and SQ2; left to right, different TiO2 deposition methods resulting in different thicknesses)



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