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Updated: Jan 18, 2026
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
19.0K
Interface Engineering Based on Naphthyl Isomerization for High-Efficiency and Stable Perovskite Solar Cells:
Xin Jiang1, Hang Deng1, Xin Chen1
1Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|September 9, 2025
Summary
Using positional isomers of naphthylamine salts, researchers improved perovskite solar cell (PSC) efficiency and stability. The 2-naphthylmethylammonium iodide (NYAI) passivator enhanced charge transfer and film quality, achieving 24.39% power conversion efficiency.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) suffer from efficiency losses due to intrinsic and interface defects causing non-radiative recombination.
- Defect passivation between perovskite and transport layers is critical for enhancing PSC performance.
Purpose of the Study:
- To investigate the impact of isomeric passivators on PSC efficiency and stability.
- To explore the use of positional isomers of naphthylamine salts for defect modification in PSCs.
Main Methods:
- Design and synthesis of two positional isomers: 1-naphthylmethylammonium iodide (NMAI) and 2-naphthylmethylammonium iodide (NYAI).
- Theoretical calculations to analyze the electronic structure and dipole moment modulation.
- Fabrication and characterization of PSC devices incorporating the designed passivators.
Main Results:
- NYAI demonstrated a higher molecular dipole moment, facilitating improved charge separation and extraction.
- NYAI treatment enhanced perovskite film quality and deep passivation effects.
- The PSC device modified with NYAI achieved a power conversion efficiency (PCE) of 24.39% and maintained 95.81% stability over 3000 hours.
Conclusions:
- The isomeric strategy using naphthylamine salts effectively improves PSC efficiency and long-term stability.
- NYAI shows significant potential as a passivator for high-performance perovskite solar cells.
