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Laser-Scribing Optimization for Sprayed SnO2-Based Perovskite Solar Modules on Flexible Plastic Substrates
Babak Taheri1, Francesca De Rossi1, Giulia Lucarelli1
1CHOSE, Department of Electronic Engineering, Università degli Studi di Roma Tor Vergata, Via del Politecnico 1, Rome 00133, Italy.
ACS Applied Energy Materials
|July 23, 2021
Summary
Scalable manufacturing of flexible perovskite solar cells (FPSCs) is achieved through optimized laser scribing and automated spray-coating. This approach yields high-efficiency large-area modules, overcoming previous limitations for commercialization.
Area of Science:
- Materials Science
- Renewable Energy Technologies
- Photovoltaics
Background:
- Flexible perovskite solar cells (FPSCs) offer potential for efficient, lightweight, and foldable power sources.
- Commercialization of FPSCs is hindered by challenges in large-area manufacturing and scalable deposition techniques.
- Laser scribing for module interconnection on flexible substrates is particularly complex.
Purpose of the Study:
- To develop and optimize scalable manufacturing processes for flexible perovskite solar modules (FPSMs).
- To combine laser scribing optimization with automated spray-coating for SnO2 layer deposition.
- To evaluate the performance and scalability of the developed FPSCs and FPSMs.
Main Methods:
- Systematic optimization of laser scribing parameters through power variation and analysis of interconnections.
- Automatized spray-coating of uniform SnO2 films on large-area plastic substrates (>120 cm2).
- Fabrication and characterization of small-area FPSCs and large-area FPSMs.
Main Results:
- Optimal laser scribing parameters were identified based on morphological and electrical analysis.
- Spray-coated SnO2 layers achieved performance comparable to spin-coated cells, with up to 15.3% efficiency on small areas.
- Large-area FPSMs demonstrated 12% PCE on 16.8 cm2 and 11.7% PCE on 21.8 cm2, with negligible hysteresis.
Conclusions:
- The combined approach of optimized laser scribing and automated spray-coating is effective for large-area manufacturing of FPSCs.
- FPSCs maintained 78% of their initial efficiency when scaled from 0.1 cm2 to 16.8 cm2.
- This strategy addresses key scalability challenges, paving the way for commercialization of flexible perovskite solar technology.
