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Evaluation of electrical and photovoltaic behaviours as comparative of Au n GaAs MS diodes with and without pure and graphene Gr doped polyvinyl alcohol PVA interfacial layer under dark and illuminated conditions      
Yazarlar
Doç. Dr. Osman ÇİÇEK
Kastamonu Üniversitesi, Türkiye
Habibe Uslu
Karabük Üniversitesi, Türkiye
Serhat Orkun Tan
Karabük Üniversitesi, Türkiye
Hüseyin Tecimer
Karabük Üniversitesi, Türkiye
Şemsettin Altındal
Gazi Üniversitesi, Türkiye
İbrahim Uslu
Gazi Üniversitesi, Türkiye
Özet
Au/n-GaAs (MS) type Schottky diodes (SDs) were fabricated with and without pure and Gr-doped PVA interlayer to evaluate the effects of Gr-doped PVA interlayer on the basic electrical parameters (i.e. saturation current (Io), ideality factor (n), barrier height (ΦBo), series (Rs) and shunt resistances (Rsh) both under dark and illuminated conditions (50-200 W), at room temperature. Using different calculation methods (i.e. thermionic emission (TE) model, Ohm's Law and Norde's method), these parameters were obtained from the current-voltage (I-V) data and compared with each other in various conditions. In our research, it is clear that there are a decrease in Rs value and an increase in Rsh value for Gr-doped PVA in comparison with the pure PVA structure under dark and illuminated conditions, therefore rectifier rate (RR = IF/IR), is the proof of the quality for diodes, significantly improved. Also, the ΦBo values with interlayer (pure and Gr-doped PVA) are lower than without. Consequently, these results indicate that the PVA (pure and Gr-doped) changed effectively the BH according to other structure and, moreover, Gr-doped PVA layer significantly improved the quality of Au/PVA/n-GaAs structure under dark and illuminated conditions.
Anahtar Kelimeler
Nano-structures,Polymer (textile) fibre,Electrical properties
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı COMPOSITES PART B-ENGINEERING
Dergi ISSN 1359-8368
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 08-2016
Cilt No 98
Sayfalar 260 / 268
Doi Numarası 10.1016/j.compositesb.2016.05.042
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S1359836816307053