Analysis of current conduction mechanism in CZTSSe/n-Si structure
Yükleniyor...
Dosyalar
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, Cu2ZnSn(S,Se)(4) (CZTSSe) thin films were deposited by the single step thermal evaporation process using the sintered powder of CZTSSe on soda lime glass (SLG) and Si wafer substrates. The structural, optical, and electrical properties of deposited films were investigated. Current-voltage (I-V) in the temperature range of 250-350 K, capacitance-voltage(C-V) and conductance-voltage (G/w-V) measurements at room temperature were carried out to determine electrical properties of CZTSSe/n-Si structure. The forward bias I-V analysis based on thermionic emission (TE) showed barrier height inhomogeneity at the interface and thus, the conduction mechanism was modeled under the assumption of Gaussian distribution of barrier height. The mean barrier height and standard deviation at zero bias were obtained as 1.27 eV and 0.18 V, respectively. Moreover, Richardson constant was obtained as 120.46 A cm(-2) K-2 via modified Richardson plot and the density of interface states (D-it) profile was determined using the data obtained from forward bias I-V measurements. In addition, by the results of frequency dependent C-V measurements, characteristics of the interface state density were calculated applying high-low frequency capacitance (C-HF - C-LF) and Hill-Coleman methods.
Açıklama
Anahtar Kelimeler
Current-Voltage Characteristics, Film Solar-Cells, Photovoltaic Properties, Electron-Transport, Schottky Contacts, Barrier Heights, Phase-Formation, Thin-Films, Temperature, Inhomogeneities
Kaynak
Journal of Materials Science-Materials in Electronics
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
29
Sayı
7
