Title :
Analysis of the impact of rear side geometry on performance of back-contact back-junction solar cells
Author :
Procel, Paul ; Maccaronio, Vincenzo ; Crupi, Felice ; Cocorullo, Giuseppe ; Zanuccoli, M.
Author_Institution :
Dipt. di Ing. Inf., Modellistica, Elettron. e Sist., Univ. della Calabria, Rende, Italy
Abstract :
In this work, we performed a study of rear side geometry of a back-contact back-junction solar cell parameters: the emitter, the back surface field (BSF) and their gap distance by exploiting two-dimensional TCAD numerical simulations. All figures of merit have been considered in order to understand the impact of the dominant ones. Higher efficiency are lead by higher emitter width/pitch ratios, lower pitches, and minimum BSF and gap widths. The impact of emitter is explained in terms of lower recombination in bulk due to a larger p-n junction, the impact of BSF and gap dimensions are explained in terms of surface recombination losses at back interface and the impact of pitch in terms of higher series resistance.
Keywords :
numerical analysis; optical design techniques; p-n junctions; solar cells; surface recombination; technology CAD (electronics); back interface; back surface field; back-contact back-junction solar cell parameters; emitter width/pitch ratios; figures of merit; gap dimensions; gap distance; gap widths; minimum BSF; p-n junction; pitch impact; rear side geometry; series resistance; surface recombination losses; two-dimensional TCAD numerical simulation; Doping; Geometry; Numerical models; Photovoltaic cells; Photovoltaic systems; Semiconductor process modeling; back-contact solar cell; dark analysis; numerical simulation; photovoltaics; solar cell;
Conference_Titel :
Photonics Technologies, 2014 Fotonica AEIT Italian Conference on
Conference_Location :
Naples
Print_ISBN :
978-8-8872-3718-4
DOI :
10.1109/Fotonica.2014.6843919
