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Updated: May 9, 2025
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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Hole transport layer selection for stable and efficient carbon electrode-based perovskite solar cells
Kausar Ali Khawaja1, Wenjun Xiang1, Jacob Wall1
1Materials Science and Engineering Program, School for Engineering of Matter, Transport and Energy, Arizona State University Tempe AZ 85287 USA fengyan@asu.edu.
RSC Advances
|April 29, 2025
Summary
Choosing the right hole transport layer (HTL) is key for carbon-based perovskite solar cells (C-PSCs). Spiro-OMeTAD offers high efficiency, while CuSCN provides better long-term stability for C-PSCs.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) show high efficiency but suffer from poor long-term stability.
- Carbon-based PSCs (C-PSCs) offer a cost-effective and stable alternative, but performance lags behind noble metal-based devices.
- Optimizing the carbon/perovskite interface is critical for C-PSC performance, with hole transport material (HTM) selection being a key factor.
Purpose of the Study:
- To systematically investigate the impact of commonly used hole transport layers (HTLs) on the performance and stability of carbon-based perovskite solar cells (C-PSCs).
- To identify optimal HTLs that balance power conversion efficiency (PCE) and operational stability in C-PSCs.
Main Methods:
- Fabrication and characterization of C-PSCs using three different HTLs: Spiro-OMeTAD, CuSCN, and PTAA.
- Performance evaluation through power conversion efficiency (PCE) measurements.
- Stability testing under ambient conditions for 500 hours.
Main Results:
- Spiro-OMeTAD-based C-PSCs achieved the highest PCE of 19.29%.
- CuSCN-based C-PSCs demonstrated superior stability, retaining ~60% of initial performance after 500 hours, despite a lower PCE of 11.94%.
- PTAA-based C-PSCs showed moderate PCE (12.92%) but significant degradation (~35% remaining efficiency).
Conclusions:
- HTL selection critically influences both the efficiency and stability of C-PSCs.
- CuSCN presents a promising HTL for enhancing C-PSC stability, while Spiro-OMeTAD excels in achieving higher power conversion efficiencies.
- Further research is needed to optimize HTLs for commercially viable C-PSCs that combine high performance and long-term durability.
