Optical and Electrical Modeling of Dye Sensitized Solar Cell: Influence of the Overlap Distance Between TiO2 Particles
El Hadji Oumar Gueye,
Papa Douta Tall,
Kharouna Talla,
Abdoulaye Ndiaye Dione,
Allé Dioum,
Mouhamadou Bachir Gaye,
Ndeye Maty Ndiaye,
Balla Diop Ngom,
Aboubaker Chedikh Beye
Issue:
Volume 6, Issue 1, January 2017
Pages:
1-9
Received:
3 January 2017
Accepted:
12 January 2017
Published:
3 February 2017
Abstract: Dye sensitized solar cells (DSSC) are used for photovoltaic applications. The paper presents a methodology for optical and electrical modeling of dye-sensitized solar cells (DSSCs). In order to take into account the influence of the overlap distance between two TiO2 particles on the cell an optoelectronic model for DSSC is presented in this paper. From the radiative transfer equation and Mie theory, the optical generation rate of cell is deduced. Coupling the output of the optical model (the dye absorption rate) to an electrical model allows determination of short-circuit current density and maximum power output. Due to our model, the dependence effects of the overlap distance upon the porosity, the optical generation rate, the short circuit current density and the maximum power output are evidenced. Thus, we see that when the overlap distance increases the porosity decreases. In addition, when the overlap distance increases, the absorption rate decreases when the overlap distance is greater than TiO2 radius divide by 5. Moreover, we see that when the overlap distance is lower than the TiO2 radius divided by 5, the short circuit current density and the maximum power output increase. However, when the overlap distance is higher than TiO2 radius divided by 5 they decrease. Thus, according to the model, we see that the optimal overlap distance is equal to TiO2 radius divide by 5. Our results agree with those found in the literature.
Abstract: Dye sensitized solar cells (DSSC) are used for photovoltaic applications. The paper presents a methodology for optical and electrical modeling of dye-sensitized solar cells (DSSCs). In order to take into account the influence of the overlap distance between two TiO2 particles on the cell an optoelectronic model for DSSC is presented in this paper. ...
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New Class of Heintzmann Exact Solution in General Relativity for an Isotropic Charged Stellar Model
A. H. M. Mahbubur Rahman,
Md. Rubayet Rahman
Issue:
Volume 6, Issue 1, January 2017
Pages:
16-22
Received:
27 January 2017
Accepted:
13 February 2017
Published:
7 March 2017
Abstract: Exact solution for spherically symmetric isotropic charged fluid sphere are investigated relativistic model of an electrically charged compact star, and energy density associated with the electric fluids is on the same order of magnitude as the energy density of fluid matter itself. The analytic solution depicts a unique static charged configuration of quark matter with radius R~9 km and total mass M~2.5M⊙. And try to inspect the velocity of sound approximately 1/√3 which is similar to the attitude of SQM (Strange Quark matter). Adiabatic index conform the stability of star if the adiabatic index is less than 4/3. Based on an analytic model in the recent work, the applicable values of physical quantities have been calculated by accepting the estimated masses and radii of some well-known strange star candidates like PSR J1903+327, Her X-1, Cen X-3, EXO 1785-248.
Abstract: Exact solution for spherically symmetric isotropic charged fluid sphere are investigated relativistic model of an electrically charged compact star, and energy density associated with the electric fluids is on the same order of magnitude as the energy density of fluid matter itself. The analytic solution depicts a unique static charged configuratio...
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