Modelling interfacial charge transfer in dye-sensitised solar cells

On the Modeling and Simulation of Reaction-Transfer Dynamics in Semiconductor-Electrolyte Solar Cells

“…The microscopic electrochemical processes on the semiconductor-electrolyte interface can be very complicated, depending on the types of semiconductor materials and electrolyte solutions. There is a vast literature in physics and chemistry devoted to the subject; see, for instance, [5,32,33,45,52,53,63,68,70,71,82] and references therein. We are only interested in deriving macroscopic interface conditions that are consistent with the dynamics of charge transport in the semiconductor and the electrolyte modeled by the equation systems (1) and (14).…”

“…The interface conditions (22) and (23) can now be supplied to the semiconductor equations in (1) and the redox equations in (14) respectively. The values of the electron and hole transfer rates, k et and k ht , in the interface conditions can be calculated approximately from the first principles of physical chemistry [5,32,33,45,52,63,68,70,71,82]. Theoretical analysis shows that both parameters can be approximately treated as constant; see, for instance, [53] for a summary of various ways to approximate these rates.…”

Numerical algorithms based on Galerkin methods for the modeling of reactive interfaces in photoelectrochemical (PEC) solar cells

“…We present three numerical algorithms, mainly based on a mixed finite element and a local discontinuous Galerkin method for spatial discretization, with carefully chosen numerical fluxes, and implicit-explicit time stepping techniques, for solving the time-dependent nonlinear systems of partial differential equations. We perform computational simulations under various model parameters to demonstrate the performance of the proposed numerical algorithms as well as the impact of these parameters on the solution to the model.The phenomena of reaction and transport of charged particles in spatial regions with semiconductor and electrolyte interfaces has been extensively investigated in the past few decades [12,49,50,66,74,86,91,94,95,105]; see [75] for recent reviews on the subject. There are three…”

“…The phenomena of reaction and transport of charged particles in spatial regions with semiconductor and electrolyte interfaces has been extensively investigated in the past few decades [12,49,50,66,74,86,91,94,95,105]; see [75] for recent reviews on the subject. There are three…”

A new structure of counter electrode used for dye‐sensitized solar cells

“…At present, most researches about DSCs focus on theoretical models [2,9] of electronic transmission in nanocrystalline TiO 2 film [3], new sensitized dyes [4,8], quasi-solid state, solid state electrolyte and so on, but the study of counter electrode is relatively few. The counter electrode is an important component of DSCs and decides the performance and cost of DSCs.…”