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Efficient Compact-Layer-Free, Hole-Conductor-Free, Fully Printable Mesoscopic Perovskite Solar Cell
Xixi Jiang1,2, Yuli Xiong1, Anyi Mei1
1Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology , Wuhan, Hubei 430074, P. R. China.
A novel printable perovskite solar cell achieved over 13% power conversion efficiency without compact or hole-transport layers. Surface wettability significantly impacts mesoscopic perovskite solar cell performance, enabling simpler, cheaper solar technology.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) offer high efficiency but often require complex fabrication steps.
- Developing printable, low-cost solar technologies is crucial for widespread adoption.
- Mesoscopic PSC architectures are promising but can be challenging to optimize.
Purpose of the Study:
- To develop a fully printable, layer-free mesoscopic perovskite solar cell.
- To investigate the impact of surface wettability on device performance.
- To achieve high power conversion efficiency (PCE) comparable to conventional devices.
Main Methods:
- Fabrication of a compact-layer-free and hole-conductor-free mesoscopic PSC.
- Utilizing FTO and TiO2 substrates with varying perovskite precursor solution wettability.
- Characterization of device performance, including power conversion efficiency.
Main Results:
- A fully printable mesoscopic PSC achieved a PCE exceeding 13%.
- This efficiency is comparable to devices with a TiO2 compact layer.
- Surface wettability of the perovskite precursor solution on FTO and TiO2 significantly influences mesoscopic PSC performance.
Conclusions:
- Printable, layer-free mesoscopic PSCs are a viable alternative to conventional devices.
- Controlling surface wettability is key to optimizing printable PSC fabrication.
- This approach simplifies manufacturing and reduces costs for perovskite solar cells.
