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Optimizing Geometry and ETL Materials for High-Performance Inverted Perovskite Solar Cells by TCAD Simulation
Irodakhon Gulomova1, Oussama Accouche2, Rayimjon Aliev1
1Renewable Energy Sources Laboratory, Andijan State University, Andijan 170100, Uzbekistan.
Nanomaterials (Basel, Switzerland)
|August 9, 2024
Summary
Optimizing layer thicknesses in inverted perovskite solar cells significantly boosts efficiency. This study demonstrates higher performance compared to traditional cells by fine-tuning electron transport layers (ETLs) and hole transport layers (HTLs).
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Inverted perovskite solar cells offer potential advantages over traditional designs due to optimized charge transport layers.
- Understanding the impact of layer thickness on device performance is crucial for maximizing solar cell efficiency.
Purpose of the Study:
- To investigate the effect of varying electron transport layer (ETL) and perovskite layer thicknesses on the performance of inverted perovskite solar cells.
- To compare the efficiencies of inverted perovskite solar cells with different ETL materials (ZnO, MoO3, TiO2) against traditional structures.
Main Methods:
- Fabrication of inverted perovskite solar cells with NiOx/CH3NH3PbI3/ETL structures, varying NiOx, perovskite, and ETL thicknesses.
- Systematic characterization of device performance based on layer thickness optimization for ZnO, MoO3, and TiO2 ETLs.
Main Results:
- Optimal NiOx thickness was found to be 80 nm across all structures.
- Optimal perovskite thicknesses were 600 nm (ZnO, MoO3) and 800 nm (TiO2).
- Optimal ETL thicknesses were 100 nm (ZnO), 80 nm (MoO3), and 60 nm (TiO2), yielding efficiencies of 30.16%, 18.69%, and 35.21%, respectively.
Conclusions:
- Optimized layer thicknesses in inverted perovskite solar cells lead to significant efficiency gains.
- Inverted perovskite solar cells with optimized ZnO, MoO3, and TiO2 ETLs demonstrated higher efficiencies (up to 35.21%) compared to traditional designs.
- Fine-tuning layer thicknesses is a key strategy for enhancing the performance of perovskite solar cells.
