Alternating current impedance spectroscopic investigation of an a-Si:H/c-Si heterojunction with porous silicon multilayers

Seba, H.Y.; Hadjersi, Toufik; Zebbar, N.; Brighet, Amer; Berouaken, Malika; Manseri, A.; Chabane, L.; Kechouane, M.

doi:10.1016/j.tsf.2020.137891

Cited by 2 publications

(1 citation statement)

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“…As a light source, halogen lamps were used at an intensity of 34 mW/cm 2 . From the measurement of the I-V characteristics, the parameters of solar cells include open-circuit voltage (V OC ), shortcircuit current (I SC ), maximum operating point for determining the fill factor (FF), and conversion efficiency (η) (Seba et al, 2020). At the maximum operating point, the maximum voltage (V m ) and maximum current (I m ) are known (Kumar Saha et al, 2010).…”

Section: Methodsmentioning

confidence: 99%

Analysis increase in the efficiency of a-Si: H solar cell due to the addition of an intrinsic layer to the p-i-n structure by ellipsometric spectroscopy

Prayogi

Cahyono

Darminto

2021

Preprint

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Backround: In this study, we report for the first time that the addition of an intrinsic layer to the a-Si: H p-i-n solar cell structure greatly enhances the conversion efficiency. The a-Si: H p-i-n solar cells were grown using Plasma Enhanced Chemical Vapor Deposition (PECVD) techniques on the Indium Tin Oxide (ITO) substrate and added an intrinsic layer with the p-i1-i2-n structure in order to prevent sunlight energy from being absorbed the first intrinsic layer can be absorbed by the second intrinsic layer. Result The a-Si: H p-i-n and p-i1-i2-n solar cells were characterized including optical properties, electrical properties, surface morphology, thickness, band-gap using Ellipsometric Spectroscopy (ES). Furthermore, from the optical constant and thin film thickness, the reflectance and transmittance of each sample were obtained. The p-i-n and p-i1-i2-n samples show good transparency in the infrared region and this transparency decreases in the visible light region shows an interference pattern with a sharp decrease in transmission at the absorption edge and the performance of solar cells (curve I-V) measured by use sun simulator and sunshine. Conclussion: Our results show that there is a very good increase in the efficiency of the a-Si: H p-i1-i2-n solar cells by 58.6% of the original p-i-n structure.

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Section: Methodsmentioning

confidence: 99%