@inproceedings{c8a95bc51a7b4f01a965cb707279aab0,
title = "35.8\% space and 38.8\% terrestrial 5J direct bonded cells",
abstract = "Spectrolab has fabricated a direct semiconductor bonded space solar cell with an efficiency of 35.8\% under the AM0 space spectrum. Using a similar technology, Spectrolab has achieved a 5-junction (5J) direct bonded terrestrial cell with a record efficiency of 38.8\% under the one-sun AM1.5G terrestrial spectrum. Efforts to further improve the 5J cell efficiency have focused on development of the top 3 junctions (T3J) grown on GaAs. Experiments with top 3J isotype cells have yielded an improvement of 1\% in current and 100 mV in voltage for the T3J. Spectrolab has also made significant improvements in its direct bonding process. The improved process has increased bond strengths by more than a factor of 5 and eliminated issues with large voids.",
keywords = "direct bonding, multijunction cells, semiconductor bonding, wafer bonding",
author = "Chiu, \{P. T.\} and Law, \{D. C.\} and Woo, \{R. L.\} and Singer, \{S. B.\} and D. Bhusari and Hong, \{W. D.\} and A. Zakaria and J. Boisvert and S. Mesropian and King, \{R. R.\} and Karam, \{N. H.\}",
note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 40th IEEE Photovoltaic Specialist Conference, PVSC 2014 ; Conference date: 08-06-2014 Through 13-06-2014",
year = "2014",
month = oct,
day = "15",
doi = "10.1109/PVSC.2014.6924957",
language = "English (US)",
series = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "11--13",
booktitle = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
}