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A Self-Assembled Small-Molecule-Based Hole-Transporting Material for Inverted Perovskite Solar Cells
Miriam Más-Montoya1, Paula Gómez1, David Curiel1
1Multifunctional Molecular Materials, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Campus of Espinardo, 30100, Murcia, Spain.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 6, 2020
Summary
Researchers developed anthradi-7-azaindole (ADAI) as a high-performance hole-transporting layer for perovskite solar cells. This advancement in interfacial engineering improves perovskite morphology and reduces charge recombination for better efficiency.
Area of Science:
- Materials Science
- Photovoltaics
- Organic Electronics
Background:
- Hybrid organic-inorganic perovskite solar cells are a promising low-cost photovoltaic technology.
- Advances in interfacial engineering and charge selective interlayers are crucial for perovskite solar cell progress.
Purpose of the Study:
- To synthesize and characterize a novel small molecule, anthradi-7-azaindole (ADAI).
- To evaluate ADAI as a hole-transporting layer in inverted perovskite solar cells.
Main Methods:
- Synthesis and characterization of the anthradi-7-azaindole (ADAI) molecule.
- Fabrication and testing of perovskite solar cells using ADAI as the hole-transporting layer.
- Analysis of perovskite morphology and charge recombination using photoluminescence and electroluminescence.
Main Results:
- ADAI demonstrated outstanding performance as a hole-transporting layer.
- Hydrogen-bond-directed self-assembly of ADAI promoted favorable perovskite layer morphology.
- Reduced charge recombination was observed, indicated by various spectroscopic studies.
Conclusions:
- Anthradi-7-azaindole is an effective material for interfacial engineering in perovskite solar cells.
- The molecular arrangement of ADAI enhances perovskite film quality and device performance.
- This work contributes to the development of efficient and stable perovskite photovoltaic devices.
