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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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Highly efficient and durable planar carbon-based perovskite solar cells enabled by polystyrene modified
Huiyin Zhang1, Yaoyao Song1, Yunzhao Sun1
1School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science & Technology University, Beijing 100192, PR China.
Journal of Colloid and Interface Science
|August 21, 2023
Summary
Researchers enhanced perovskite solar cell (PSC) stability and efficiency by incorporating hydrophobic polystyrene (PS) into Spiro-OMeTAD hole-transporting layers. This modification improved film quality and moisture resistance, leading to durable, high-performance carbon-based PSCs.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) efficiency and durability depend on functional layer properties.
- Spiro-OMeTAD is a common hole-transporting material but suffers from hygroscopic additives and poor film formation, limiting PSC performance and stability.
- These limitations manifest as reduced efficiency and long-term degradation in devices.
Purpose of the Study:
- To enhance the hydrophobicity and film-forming capability of Spiro-OMeTAD using polystyrene (PS).
- To improve the stability and efficiency of planar carbon-based PSCs by utilizing PS-modified Spiro-OMeTAD.
- To investigate the impact of PS incorporation on the morphology and carrier transport properties of the hole-transporting layer.
Main Methods:
- Incorporation of hydrophobic polymer polystyrene (PS) into additive-doped Spiro-OMeTAD.
- Fabrication of planar carbon-based PSCs using the PS-modified Spiro-OMeTAD.
- Evaluation of device stability through aging tests under ambient atmosphere without encapsulation.
- Characterization of film morphology and interfacial carrier transport.
Main Results:
- PS-modified Spiro-OMeTAD films exhibited improved hydrophobicity and reduced pinholes, enhancing film quality.
- The derived planar carbon-based PSCs maintained 92% of their initial efficiency after 2500 hours of aging under ambient conditions.
- Significantly enhanced interfacial carrier transport was observed due to the improved morphology.
- A champion power conversion efficiency of 21.06% was achieved, a notable result for planar carbon-based PSCs.
Conclusions:
- Polystyrene incorporation effectively addresses the limitations of Spiro-OMeTAD, improving both the material and device performance.
- The developed PS-modified Spiro-OMeTAD is a promising material for fabricating highly stable and efficient carbon-based PSCs.
- This approach offers a viable strategy for advancing the commercialization potential of perovskite solar technology.
