Browsing by Author "Karakaya, Merve"

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Characterization of CdTe growth on GaAs using different etching techniques

Bilgilisoy, Elif; Özden, Selin; Bakali, Emine; Karakaya, Merve; Selamet, Yusuf (Springer, 2015-09-26)

CdTe buffer layers which were grown on (211)B GaAs by molecular beam epitaxy were subjected to two different etch treatments to quantify the crystal quality and dislocation density. The optical properties and thicknesses ...
Growth and characterization of CdTe absorbers on GaAs by MBE for high concentration PV solar cells

Arı, Ozan; Polat, Mustafa; Karakaya, Merve; Selamet, Yusuf (Wiley, 2015-11)

CdTe based II-VI absorbers are promising candidates for high concentration PV solar cells with an ideal band gap for AM1.5 solar radiation. In this study, we propose single crystal CdTe absorbers grown on GaAs substrates ...
Surface roughness estimation of MBE grown CdTe/GaAs(211)B by ex-situ spectroscopic ellipsometry

Karakaya, Merve; Bilgilisoy, Elif; Arı, Ozan; Selamet, Yusuf (American Institute of Physics Publishing, 2016-07-01)

Spectroscopic ellipsometry (SE) ranging from 1.24 eV to 5.05 eV is used to obtain the film thickness and optical properties of high index (211) CdTe films. A three-layer optical model (oxide/CdTe/GaAs) was chosen for the ...