@inproceedings{c2630718acd54be184dd7914072018b7,
title = "Effect of substrate effcut angle on AlGaInP and GaInP solar cells grown by molecular beam epitaxy",
abstract = "We have studied characteristics of ∼2.0 eV AlGaInP and ∼1.9 eV GaInP solar cells on misoriented GaAs substrates grown by molecular beam epitaxy (MBE). Lattice-matched AlGaInP solar cells are of interest for space and concentrator photovoltaics, but there have been relatively few reports on such cells grown by MBE. Open circuit voltages for GaInP cells ranged from 1.29-1.30 V, while AlGaInP cells ranged from 1.35-1.37 V. The bandgap-voltage offset (Woc) of GaInP cells decreased from ∼575 mV to ∼565 mV as misorientation angle increased from 0° to 10°, while Woc for AlGaInP cells remained nearly constant at 620 mV. Internal quantum efficiency (IQE) measurements show that current collection for AlGaInP cells is lower than in GaInP and indicates the need for a thinner emitter with good surface passivation; no trend in IQE was observed as a function of offcut. Although Woc for AlGaInP was slightly higher than in GaInP, we believe that further optimization will allow MBE-grown AlGaInP to be a promising candidate for future top cell applications.",
keywords = "AlGaInP, GaInP, MBE, photovoltaic cells, wide bandgap",
author = "Taizo Masuda and Stephanie Tomasulo and Lang, \{Jordan R.\} and Lee, \{Minjoo Larry\}",
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.2014.6924970",
language = "English (US)",
series = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "505--509",
booktitle = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
address = "United States",
}