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RISS 인기검색어
- 검색키워드
- 저자 : Subarna Rudra (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Review on simulation of current–voltage characteristics of dye-sensitized solar cells
Rudra, Subarna,Sarker, Subrata,Kim, Dong Min Elsevier 2019 Journal of industrial and engineering chemistry Vol.80 No.-
<P><B>Abstract</B></P> <P>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.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Simulation and electrochemical impedance spectroscopy of dye-sensitized solar cells
Subarna Rudra,서현우,수브라타사르카,김동민 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.97 No.-
Here, we report on simulating the steady-state j–V characteristics of dye-sensitized solar cells (DSSCs). First, a set of differential equations describing the kinetic processes involving the charge carriers –electron, iodide, triiodide, and dye cation – are derived. We consider non-linearity both in transport andin the recombination of electrons. Also, we consider that the charge transport occurs only by diffusion. Moreover, Boltzmann statistics relate electron density and Fermi level in TiO2, a quasi-static equilibriumholds between free and total electrons, and traps in the semiconductorfit to an exponential distributionof energies. Most importantly, we assume that electron transport occurs according to the multipletrappingmodel. The numerical solution provides j–V characteristics of the photoelectrode. To establish arelationship between the photovoltaic performance of the photoelectrode and that of the overall DSSCs,we consider the potential drops due to series-resistive elements according to the device physics of DSSCs. Finally, the model is applied to simulate the photovoltaic performance of real DSSCs with varying TiO2film thickness and electrolyte composition. The critical parameters of the model were extracted fromelectrochemical impedance spectroscopy (EIS) data of the DSSCs. The model successfully reproduced thej–V curves of the DSSCs.
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Review on simulation of current–voltage characteristics of dye-sensitized solar cells
Subarna Rudra,수브라타사르카,김동민 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
Dye-sensitized solar cells (DSSCs) has become a promising technology because of its outstanding abilityto generate electricity, especially in diffuse light. Despite the rise of perovskite solar cells, intenseresearch activities on developing new materials forflexible, efficient, and stable DSSCs have been goingon. Understanding of the essential aspects of the device and their effect on overall performance is of greatimportance to upscale the device. Mathematical models and simulations help in quantitativeunderstanding of the critical aspects and their relation to the overall performance of the device atdesired operating conditions. Here, we review the mathematical models of DSSCs discussing the keyparameters: ideality factor, electron diffusion, and recombination. We have reconciled the concepts ofelectron generation, diffusion and recombination into a set of ordinary differential equations and solvedthose equations to simulate the photovoltaic performance of DSSCs. There is no conflict on the concept ofelectron diffusion via multiple trapping; however, the recombination of DSSCs is still under debate sincethe theory and experimental evidence often conflicts. The latter affects the photovoltage of DSSCs. Thereview should help the researchers understand the key parameters and their relation to the overall cellperformance.
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