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Updated: Jul 25, 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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Crystallization and Orientation Modulation Enable Highly Efficient Doctor-Bladed Perovskite Solar Cells
Jianhui Chang1, Erming Feng1, Hengyue Li1
1Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, People's Republic of China.
Nano-Micro Letters
|June 29, 2023
Summary
Methylammonium chloride additive improves large-scale perovskite solar cell fabrication. This method enhances film quality and carrier transport, leading to higher power conversion efficiencies (PCEs) for scalable solar energy applications.
Area of Science:
- Materials Science
- Renewable Energy
- Solid-State Physics
Background:
- Perovskite solar cells (PSCs) show rapid performance gains, but scalable fabrication methods lag behind lab-scale techniques.
- Two-step sequential deposition is a promising scalable method, yet its power conversion efficiencies (PCEs) are lower than spin-coated PSCs.
Purpose of the Study:
- To develop a scalable fabrication technique for high-performance PSCs.
- To improve the quality and efficiency of perovskite films produced via two-step sequential deposition.
Main Methods:
- Introduction of methylammonium chloride (MACl) as an additive during the two-step sequential doctor-blading of perovskite films.
- Modulation of perovskite crystallization, grain size, crystallinity, and film orientation.
- Fabrication and characterization of PSCs, including PCE measurements and stability tests.
Main Results:
- MACl significantly enhances perovskite film quality, increasing grain size and crystallinity while reducing trap density and nonradiative recombination.
- MACl promotes a preferred (100) face-up orientation, improving carrier transport and fill factor.
- A champion PCE of 23.14% was achieved for small-area PSCs, with 21.20% for 1.03 cm2 PSCs and 17.54% for 10.93 cm2 mini-modules.
Conclusions:
- The addition of MACl is an effective strategy for improving the performance of large-scale PSCs fabricated using two-step sequential deposition.
- This approach represents significant progress towards the commercialization of high-efficiency perovskite solar technology.
