Anodic aluminium oxide rear passivated laser-doped selective-emitter solar cells

Author

Jie Cui ; Xi Wang ; Dong Lin ; Pei Hsuan Lu ; Lennon, Alison

Author_Institution

Sch. of Photovoltaic & Renewable Energy Eng., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2014

fDate

8-13 June 2014

Abstract

This paper presents a passivated emitter and rear cell (PERC) design featuring an anodic aluminium oxide (AAO) - thin SiO₂ stack layer for rear surface passivation. Rear contacts were formed by laser-doping lines through the nano-porous AAO layer and then sintering aluminium through the lines to make electrical contact. Open circuit voltages as high as 660 mV were achieved which is comparable to voltages achieved from cells with plasma enhanced chemical vapor deposited Al₂O₃ and a-SiN_x:H rear stack layers. High series resistance and a poor SiN_x antireflection coating limited the fill factor and short circuit current, respectively.

Keywords

aluminium compounds; amorphous semiconductors; anodisation; electrical contacts; nanoporous materials; passivation; plasma CVD coatings; short-circuit currents; silicon compounds; sintering; solar cells; Al₂O₃-SiN_x:H; PERC design; anodic aluminium oxide; antireflection coating; electrical contact; fill factor; high series resistance; laser-doped selective-emitter solar cells; laser-doping lines; nanoporous AAO layer; open circuit voltages; passivated emitter rear contact cells; plasma enhanced chemical vapor deposited; rear surface passivation; short circuit current; sintering; thin stack layer; Aluminum oxide; Passivation; Photovoltaic cells; Silicon; Surface emitting lasers; PERC; anodic aluminium oxide; anodisation; solar cells; surface passivation;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/PVSC.2014.6924989

Filename

6924989