On the Investigation of Interface Defects of Solar Cells: Lead-Based vs Lead-Free Perovskite

Perovskite solar cells (PSCs) have drawn significant consideration as a competing solar cell technology because of the drastic advance in their power conversion efficiency (PCE) over the last two decades. The interfaces between the electron transport layer (ETL) and the absorber layer and between th...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.130221-130232
Main Authors: Basyoni, Marwa Sayed Salem, Salah, Mostafa M., Mousa, Mohamed, Shaker, Ahmed, Zekry, Abdelhalim, Abouelatta, Mohamed, Alshammari, Mohammad T., Al-Dhlan, Kawther A., Gontrand, Christian
Format: Article
Language:English
Subjects:
Absorbers
Charge carrier processes
Defects
Electron transport
Energy conversion efficiency
II-VI semiconductor materials
Interface defects
Interfaces
Lead
lead based perovskite solar cell
Lead free
lead free perovskite solar cell
Permittivity
Perovskites
Photovoltaic cells
SCAPS-1D
Solar cells
Tin
Zinc oxide
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Summary:Perovskite solar cells (PSCs) have drawn significant consideration as a competing solar cell technology because of the drastic advance in their power conversion efficiency (PCE) over the last two decades. The interfaces between the electron transport layer (ETL) and the absorber layer and between the absorber layer and the hole transport layer (HTL) have a major impact on the performance of the PSCs. In this paper, we have investigated the defect interfaces between ETL/absorber layer and absorber layer/HTL of calibrated experimental CH 3 NH 3 PbX 3 lead-based and FASnI 3 lead-free PSCs. The influence of the defect interfaces is studied in order to find the optimum value for the maximum possible PCE. While the PCE has not been enhanced considerably for the lead-based, it is boosted from 1.76% to 5.35% for lead-free PSCs. Also, bulk traps were found to have minor role in comparison with interface traps for the lead-free cell while they have a significant impact for the lead-based cell. The results presented in this work would shed some light on designing interface defects of various types of practical PSC structures and demonstrates the crucial impact of the interface defects on lead-free vs lead-based PSCs. All simulation studies are performed by using SCAPS-1D simulator.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3114383