Realization and Characterization of CH3NH3PbI3 /c-Si Heterojunction

2021 ◽  
Vol 406 ◽  
pp. 364-374
Author(s):  
Fatima Khelfaoui ◽  
Itidel Belaidi ◽  
Nadhir Attaf ◽  
Mohammed Salah Aida ◽  
Jamal Bougdira

In the present work we have reported the realization and characterization of CH3NH3PbI3/c-Si heterojunction. It was achieved by deposing CH3NH3PbI3 perovskite film on (P) doped single crystalline Silicon (c-Si) substrate by spin coating. The structural, optical and electrical properties of perovskite film were investigated. The electric characterization of the realized device was achieved through I-V and G-f measurements. The recorded I-V characteristic exhibits a rectifier behavior. This curve was used also to determine diode parameters; the ideality factor, the saturation current, the series resistance and the potential barrier. However, the conductance method was used to assess the interface state Nss via (G/ω) versus angular frequency ω curve. The results were used to justify the large values of the ideality factor and the series resistance.

Author(s):  
Sabuhi Ganiyev ◽  
M. Azim Khairi ◽  
D. Ahmad Fauzi ◽  
Yusof Abdullah ◽  
N.F. Hasbullah

In this paper the effects of high energy (3.0 MeV) electrons irradiation over a dose ranges from 6 to 15 MGy at elevated temperatures 298 to 448 K on the current-voltage characteristics of 4H-SiC Schottky diodes were investigated. The experiment results show that after irradiation with 3.0 MeV forward bias current of the tested diodes decreased, while reverse bias current increased. The degradation of ideality factor, n, saturation current, Is, and barrier height, Phib, were not noticeable after the irradiation. However, the series resistance, Rs, has increased significantly with increasing radiation dose. In addition, temperature dependence current-voltage measurements, were conducted for temperature in the range of 298 to 448 K. The Schottky barrier height, saturation current, and series resistance, are found to be temperature dependent, while ideality factor remained constant. DOI: 10.21883/FTP.2017.12.45193.8646


2005 ◽  
Vol 494 ◽  
pp. 83-88
Author(s):  
A. Vasić ◽  
P. Osmokrović ◽  
B. Lončar ◽  
S. Stanković

Parameters that characterize semiconductor devices are often determined with difficulty, and their values very frequently depend on the method used for measurements and analysis. The extraction of diode parameters from the obtained I-V measurements could be complicated by their dependence on the voltage and the presence of series resistance. Therefore, an interpretation of the experimental I-V data must be very carefully made. In this paper, some methods for obtaining diode parameters such as saturation current, ideality factor and series resistance are presented. An evaluation of these methods based on their application for the extraction of the relevant parameters of photodiodes is also performed. Some of the methods that produce reliable and reproducible results are evaluated based on the experimentally obtained results, and in the view of the complexity of the used methods and their limitations.


2012 ◽  
Vol 1426 ◽  
pp. 365-370
Author(s):  
Francisco Temoltzi Avila ◽  
Andrey Kosarev ◽  
Ismael Cosme ◽  
Mario Moreno ◽  
P. Roca y Cabarrocas

ABSTRACTThe dark current-voltage characteristics of PIN structures are studied and analyzed for PV samples as for integral device without taking account the performance of the different elements typically used in equivalent circuit model such as diode n-factor, shunt and series resistances. The contribution of all these elements is very important in the development of devices because they determine the performance characteristics. In this work we have studied and compared the temperature dependence of current-voltage characteristics in μc-Si:H and pm-Si:H p-i-n structures having approximately the same efficiencies with emphasis on their different electronic characteristics such as shunt (Rsh) and series (Rs) resistance, ideality factor (n), and the saturation current (Is), which give us some ideas on role of these elements. In the pm-Si:H cell it was observed that the Rs increases with the increase of the temperature in contrast to the μc-Si:H structures, where the series resistance reduces with temperature change from T = 300 up to 480K. In both the pm-Si:H and μc-Si:H samples Rshreduces with temperature change from 300 up to 480 K. The ideality factor in the pm-Si:H structure shows an increase, and in μc-Si:H a reduction, when temperature increases. Saturation current in both cases increases with temperature as it was expected. From the saturation current it was obtained the build-in potential. Analysis behavior of both saturation current and n-factor with temperature shows that build-in potential increases with temperature in the pm-Si:H, but reduces in μc-Si:H structure.


2015 ◽  
Vol 1120-1121 ◽  
pp. 435-439
Author(s):  
Nathaporn Promros ◽  
Dalin Prajakkan ◽  
Nantharat Hongsa ◽  
Nattanee Suthayanan ◽  
Phongsaphak Sittimart ◽  
...  

In this work, n-type β-FeSi2/intrinsic Si/p-type Si heterojunctions were prepared by facing-targets direct-current sputtering. We measured their current-voltage characteristics at low temperatures ranging from 300 K down to 50 K and investigated their ideality factor, saturation current and series resistance using thermionic emission theory and Cheung’s method. From thermionic emission theory, the ideality factor and saturation current density were calculated from the slope of the linear part from the forward lnJ-V and the straight line intercept of lnJ-V at zero voltage, respectively. When the temperature decreased from 300 K down to 50 K, the ideality factor increased from 1.12 to 11.13, whereas the saturation current density decreased from 2.09 × 10-6 A/cm2 to 1.06 × 10-9 A/cm2. Using Cheung’s method, we plotted the relations of dV/d(lnJ)-J and H(J)-J in order to estimate the series resistance from the slope of both plots. In addition, we estimated the ideality factor from a y-axis intercept of the dV/d(lnJ)-J plot. The series resistances from both plots were consistent with each other and increased with the decreasing temperature. The ideality factor estimated by Cheung’s method was in agreement with that obtained from estimation by thermionic emission theory.


2009 ◽  
Author(s):  
Byung-Wook Yoo ◽  
Jae-Hyoung Park ◽  
Joo-Young Jin ◽  
I. H. Park ◽  
Yong-Kweon Kim

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