Heterostructures of metamorphic GaInAs photovoltaic converters fabricated by MOCVD on GaAs substrates
- Authors: Mintairov S.A.1, Emelyanov V.M.1, Rybalchenko D.V.1, Salii R.A.1, Timoshina N.K.1, Shvarts M.Z.1, Kalyuzhnyy N.A.1
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Affiliations:
- Ioffe Physical–Technical Institute
- Issue: Vol 50, No 4 (2016)
- Pages: 517-522
- Section: Physics of Semiconductor Devices
- URL: https://journals.rcsi.science/1063-7826/article/view/197008
- DOI: https://doi.org/10.1134/S1063782616040163
- ID: 197008
Cite item
Abstract
Heterostructures of metamorphic GaInAs photovoltaic converters (PVCs) are on GaAs substrates by the metal-organic chemical vapor deposition (MOCVD) method. It is shown that using a multilayer metamorphic buffer with a step of 2.5% in indium content and layer thicknesses of 120 nm provides the high quality of bulk layers subsequently grown on the buffer up to an indium content of 24%. PVCs with a long-wavelength photosensitivity edge up to 1300 nm and a quantum efficiency of ~80% in the spectral range 1050–1100 nm are fabricated. Analysis of the open-circuit voltage of the PVCs and diffusion lengths of minority carriers in the layers demonstrates that the density of misfit dislocations penetrating into the bulk layers increases at an indium content exceeding 10%.
About the authors
S. A. Mintairov
Ioffe Physical–Technical Institute
Author for correspondence.
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. M. Emelyanov
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
D. V. Rybalchenko
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
R. A. Salii
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. K. Timoshina
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
M. Z. Shvarts
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. A. Kalyuzhnyy
Ioffe Physical–Technical Institute
Email: mintairov@scell.ioffe.ru
Russian Federation, St. Petersburg, 194021