High efficiency, low cost buried contact silicon solar cells

Author

Honsberg, C.B. ; Wenham, S.R. ; Ebong, A. ; Taouk, M. ; Tang, Y.-H. ; Ghozati, S. ; Yun, F. ; Grados, A. ; Green, M.A. ; Warta, Wilhelm

Author_Institution

Centre for Photovoltaic Devices & Syst., New South Wales Univ., Sydney, NSW, Australia

Volume

2

fYear

1994

fDate

5-9 Dec 1994

Firstpage

1473

Abstract

The buried contact (BC) technology has demonstrated both an efficiency and cost advantage over conventional screen printed solar cells. New BC structures, in particular the double sided (DS) BC cell, allow further improvements in cost and efficiency. Improvements in efficiency arise through improved rear surface passivation. Experimental results from DSBC cells using various passivation methods demonstrate that a floating junction (FJ) passivates as well as passivation schemes used with high efficiency cells. 2D analysis and experimental results both show localised defects have prevented FJ passivation from achieving its potential and that optimization of the rear doping or by bifacial operation can improve performance

Keywords

crystal defects; economics; electrical contacts; elemental semiconductors; passivation; semiconductor materials; silicon; solar cells; Si; Si solar cells; bifacial operation; buried contact silicon solar cells; double sided buried contact cell; floating junction; high efficiency; localised defects; low cost; performance improvement; rear doping; rear surface passivation; screen printed solar cells; Australia; Costs; Optimization methods; Passivation; Performance analysis; Photovoltaic cells; Photovoltaic systems; Production; Silicon; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1460-3

Type

conf

DOI

10.1109/WCPEC.1994.520228

Filename

520228