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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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Hybrid Organic-Inorganic Coordination Complexes as Tunable Optical Response Materials
Will Travis, Caroline E Knapp, Christopher N Savory
1Diamond Light Source Ltd. , Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom.
Inorganic Chemistry
|March 15, 2016
Summary
Novel lead and bismuth dipyrido complexes offer tunable electronic properties for photovoltaic devices. These hybrid materials provide a flexible alternative to rigid structures, enabling enhanced solar cell performance.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Organic Chemistry
Background:
- Organic/inorganic hybrid materials are promising for photovoltaic applications.
- Tuning electronic properties is key to improving solar cell efficiency.
- Current materials like methylammonium lead iodide have limitations in tunability.
Purpose of the Study:
- To synthesize and characterize novel lead and bismuth dipyrido complexes.
- To investigate the influence of organic and inorganic components on optical band gaps.
- To assess the suitability of these materials for photovoltaic device fabrication.
Main Methods:
- Single-crystal X-ray diffraction for structural characterization.
- UV-vis, photoluminescence, and X-ray photoemission spectroscopies for energy level determination.
- Density functional theory (DFT) calculations for understanding electronic properties.
Main Results:
- Novel lead and bismuth dipyrido complexes were successfully synthesized and structurally characterized.
- Highly oriented π-stacking of planar organic ligands directs complex structures.
- Optical band gaps are tunable by varying both metal and organic components.
- DFT calculations revealed exciton separation between inorganic and organic parts upon optical excitation.
- Frontier energy levels were determined, indicating suitability for photovoltaic applications with TiO2 and spiro-OMeTAD.
Conclusions:
- The synthesized organic/inorganic hybrid materials exhibit tunable electronic properties.
- These materials offer greater electronic tunability compared to methylammonium lead iodide.
- The developed complexes are suitable for photovoltaic device fabrication, showing promise for future solar cell technologies.
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