Identifying of series resistance and interface states on rhenium/n-GaAs structures using C-V-T and G/?-V-T characteristics in frequency ranged 50 kHz to 5 MHz
Yükleniyor...
Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SPRINGER
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, Re/n-GaAs with a native oxide layer based on metal-semiconductor (MS) structures were produced and then, the capacitance-voltage-temperature (C-V-T) and the conductance-voltage-temperature (G/-V-T) data of them were obtained in the frequency ranged 50 kHz to 5 MHz. Using the raw data, the electronic parameters was calculated by the developed LabVIEW-based program. Methodologically, the series resistance (R-s) values were calculated from the measured capacitance (C-m) and conductivity (G(m)) values, while the interface state (N-ss) values were obtained from using the combined high (C-HF)-low (C-LF) frequency capacitance method by Nicollian and Brews. Experimentally, the C values increased with a decreasing frequency, while decreased with increasing temperatures in the depletion and accumulation regions. On the other hand, G/ values decreased with increasing frequency in forward and reverse bias regions. It can be attributed that, the C and the G/ values are quite affected by the presence of the R-s and the N-ss in the forbidden energy gap and a native oxide layer between M and S. The R-s-V-T curves have especially peaks in accumulation and depletion regions at low frequency values, whereas these peaks decreased at high frequencies. In addition, the N-ss-V-T curves give peaks in the range of - 0.1 V to 0.7 V at variable temperatures and the N-ss values decrease with increasing temperature and shift towards negative bias regions. Experimental results indicate that the R-s and N-ss are important parameters and so, these parameters must be considered in sensor applications based on Re/n-GaAs structures.
Açıklama
Anahtar Kelimeler
capacitance–voltage–temperature, conductance–voltage–temperature, G/ω-V-T, C-V-T, rhenium/n-GaAs, interface states, resistance
Kaynak
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
31
Sayı
1
Künye
Çiçek, O., Durmuş, H., Altındal, Ş. (2020). Identifying of Series Resistance and Interface States on Rhenium/n-GaAs Structures Using C–V–T and G/ω–V–T Characteristics in Frequency Ranged 50 kHz to 5 MHz. Journal of Materials Science: Materials in Electronics, 31(1), 704–713.
