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Updated: Oct 3, 2025
11:38
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
18.6K
Comparative Thermal Research on Energetic Molecular Perovskite Structures.
Jing Zhou1,2, Junlin Zhang1, Shaoli Chen1
1Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
Molecules (Basel, Switzerland)
|February 15, 2022
Summary
Energetic molecular perovskites were studied for thermal stability. Larger organic components and alkali cations reduced decomposition temperatures, impacting material performance.
Area of Science:
- Materials Science
- Chemistry
Background:
- Molecular perovskites are recognized as accessible and high-performing energetic materials.
- Understanding their thermal decomposition is crucial for safe handling and application.
Purpose of the Study:
- To conduct a comparative thermal analysis of three energetic molecular perovskite structures.
- To investigate the influence of organic component size and cation type on thermal stability.
- To explore the decomposition mechanisms of these materials.
Main Methods:
- Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) at various heating rates (2-20 °C/min).
- Computational methods for thermal research.
- Condensed-phase thermolysis coupled with Fourier-transform infrared spectroscopy (FTIR) and Mass Spectrometry (MS).
Main Results:
- The peak decomposition temperatures varied, with (C6H14ON2)[NH4(ClO4)3] and (C6H14N2)[Na(ClO4)3] decomposing at lower temperatures (384 °C and 354 °C, respectively) compared to (C6H14N2)[NH4(ClO4)3] (401 °C) at 10 °C/min.
- Increased molecular volume of the organic component and replacement of ammonium with alkali cations weakened the crystal structures.
- Kinetic parameters were calculated, and synergistic catalytic decomposition mechanisms were elucidated.
Conclusions:
- Structural modifications, specifically larger organic components and alkali cations, significantly affect the thermal stability of energetic molecular perovskites.
- These findings provide insights into tailoring perovskite structures for controlled energetic performance and safety.
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