Understanding Process-Structure Relationships during Lamination of Halide Perovskite Interfaces.

Area of Science:

• Materials Science
• Renewable Energy
• Solid-State Physics

Background:

• Sequential deposition in halide perovskite (HP) solar cells faces material and processing limitations.
• Lamination offers a solution by independently processing and bonding device layers, enabling new designs and methods.

Purpose of the Study:

• To investigate how lamination parameters (temperature, pressure, time) influence diffusion bond quality and HP layer properties.
• To establish quantitative process-structure-property relationships for laminated HP solar cells.

Main Methods:

• Systematic variation of lamination temperature, pressure, and time.
• Design of experiments and statistical analysis to evaluate process-structure-property relationships.
• Quantification of bonded area, grain domain size, and photoluminescence.

Main Results:

• Lamination temperature is the critical parameter affecting bond quality and HP layer properties.
• A lamination temperature of 150 °C achieved over 95% bonded area.
• Increased grain domain size and photoluminescence intensity were observed at 150 °C.

Conclusions:

• Optimizing lamination temperature is crucial for enhancing the performance of perovskite solar cells.
• The study provides quantitative insights into process-structure-property relationships for laminated solar cells.
• Successful bonding directly correlates with improved device performance metrics.