Organic Dye-based Photosensitizer for p-type Dye-Sensitized Solar Cells

Tae Hoon Kim^a, Ji Young Park^a, Jae Hong Kim^a, Do Kyung Lee^b

^aYeungnam University, Department of Chemical Engineering, Yeungnam University, Dae-dong, Gyeongsan, Gyeongbuk, Gyeongsan, 712, Korea, Republic of

^bCatholic University of Daegu, Department of Advanced Energy Material Science and Engineering Catholic University of Daegu 13-13 Hayang-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 712-702, Korea, Republic of

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Poster, Ji Young Park, 375
Publication date: 5th February 2015

Dye sensitized solar cells (DSSC), which are one of the most promising third generation photovoltaic devices, have been studied extensively. In particular, p-type DSSCs have attracted increasing attention because the combination of n- and p-type DSSCs can lead to a tandem configuration that might be able to break through the theoretical limitation of single-junction DSSCs. In this work, we aim to fabricate an efficient photosensitizing system capable of operating in the long wavelength range of the solar spectrum. The photosensitizer with mono carbazole (MCBZ) absorbed a larger amount of photons with long wavelengths between 400 and 600 nm than C343, leading to much better p-type DSSCs than the conventional C343 sensitized solar cell. Furthermore, double carbazole-based dye (DCBZ) exhibited better photovoltaic performance than the MCBZ dye sensitized solar cells due to the synergic effect of the enhanced electron injection efficiency and reduced charge recombination probability. These findings are expected to have significant impact on the fabrication of high performance photocathodes for p-type DSSCs and cells with a tandem configuration, which can lead to significant improvements in harvesting solar energy.
Reaction Scheme
F. Odobel, L. Le Pleux, Y. Pellegrin, E. Blart, New Photovoltaic Devices Based on the Sensitization of p-type Semiconductors: Challenges and Opportunities, Acc. Chem. Res. 2010, 43, 1063-1071

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International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

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