Front contact optimization of industrial scale CIGS solar cells for low solar concentration using 2D physical modeling

Abstract

A 2D model for Cu(In,Ga)Se 2 (CIGS) solar cells under low solar concentration is described and contrasted with experimental data. Using simulation, the effect of front electric contact design parameters: finger width, finger separation, and number of buses are analyzed for solar concentrations from 1 up to 10 suns. Efficiency maps allowing front contact grid optimization are shown and analyzed for each concentration value, assessing the viability of CIGS solar cells for low concentration applications.

Single step electrochemical deposition for the fabrication of CZTS kesterite thin films for solar cells

“…The toxic nature restricts the further advancement of these photovoltaic cells and the rare materials, gallium (𝐺𝑎) and indium (𝐼𝑛) used in these photovoltaic cells also increase the manufacturing cost. Therefore, the commercial production of 𝐶𝐼𝐺𝑆 based photovoltaic cell is limited [5,6].…”

Solution-processed two-dimensional materials for next-generation photovoltaics

“…field of PV with regard to both Z (422%) 34,35 and costeffectiveness. 36 Second-generation SCs are based on a large variety of semiconductor materials, including crystalline (c-Si) 37 and a-Si, 38 as well as GaAs 39 and metal chalcogenides, such as CdTe, 40 copper indium gallium diselenide (CuIn 1Àx-Ga x Se 2 or CIGS), 41,42 copper indium gallium selenide sulfide Cu(In,Ga)(Se,S) 2 (CIGSSe), 34 CdTe/CdS or CdS/PbS heterojunctions, 43,44 and Cu 2 ZnSnSe 4 (CZTSe). 45 Thin-film solar cells are characterized by some peculiar (opto)electronic features, such as nearly ideal E g for sunlight absorption (B1.4 eV, according to the S-Q limit for single-junction SCs 46 ) and absorption coefficient (a) (Z10 5 cm À1 ) over a wide spectral range (Fig.…”

Tendencias en ingeniería de materiales para la fabricación de células solares fotovoltáicas

“…Estas células contemplan elementos como cobre, indio, galio y selenio o azufre dentro de las tecnologías fotovoltaicas, los cuales se afirman como los mejores materiales de absorción con eficiencias de tecnología de película delgada, y con valores de 22,3% a nivel de laboratorio y 16% en módulo comercial grande. De igual forma, este material atrae la investigación científica por su bajo costo, principalmente [24]. Además de su alto coeficiente de absorción, se afirma que solo 2 micras de espesor de película cigs pueden adsorber la mayor parte del espectro solar incidente.…”