Title :
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
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-SiNx:H rear stack layers. High series resistance and a poor SiNx 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-SiNx: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;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6924989
