✦ LIBER ✦

New approaches for high efficiency cascade solar cells

✍ Scribed by T. Katsuyama; M.A. Tischler; D. Moore; N. Hamaguchi; N.A. Elmasry; S.M. Bedair

Publisher: Elsevier Science
Year: 1987
Weight: 338 KB
Volume: 21
Category: Article
ISSN: 0379-6787
DOI: 10.1016/0379-6787(87)90139-6

No coin nor oath required. For personal study only.

✦ Synopsis

New approaches for current problems facing cascade solar cells in III-V compounds are addressed. Spinodal decomposition of metastable alloys such as A1GaAsSb resulting in the separation of low band gap phases is proposed as an interconnect between the two cells. A new superlattice structure based on the ternary alloys GaAsP and InGaAs has been used to reduce defects originating from a GaAs substrate or a lattice-mismatched interface. This superlattice structure with Eg = 1.25 eV is used to extend photon absorption beyond the band gap of GaAs without the introduction of lattice defects.

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