Review on simulation of current-voltage characteristics of dye-sensitized solar cells

초록

Dye-sensitized solar cells (DSSCs) has become a promising technology because of its outstanding ability to generate electricity, especially in diffuse light. Despite the rise of perovskite solar cells, intense research activities on developing new materials for flexible, efficient, and stable DSSCs have been going on. Understanding of the essential aspects of the device and their effect on overall performance is of great importance to upscale the device. Mathematical models and simulations help in quantitative understanding of the critical aspects and their relation to the overall performance of the device at desired operating conditions. Here, we review the mathematical models of DSSCs discussing the key parameters: ideality factor, electron diffusion, and recombination. We have reconciled the concepts of electron generation, diffusion and recombination into a set of ordinary differential equations and solved those equations to simulate the photovoltaic performance of DSSCs. There is no conflict on the concept of electron diffusion via multiple trapping; however, the recombination of DSSCs is still under debate since the theory and experimental evidence often conflicts. The latter affects the photovoltage of DSSCs. The review should help the researchers understand the key parameters and their relation to the overall cell performance. (C) 2019 The Korean Society of industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

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