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Hybrid Organic–Inorganic Coordination Complexes as Tunable Optical Response Materials

DOI: 10.1021/acs.inorgchem.5b02749 DOI Help

Authors: Will Travis (University College London) , Caroline E. Knapp (University College London) , Christopher N. Savory (University College London) , Alex M. Ganose (University College London, Diamond Light Source) , Panagiota Kafourou (University College London) , Xingchi Song (University College London) , Zainab Sharif (University College London) , Jeremy K. Cockcroft (University College London) , David O. Scanlon (University College London; Diamond Light Source) , Hugo Bronstein (University College London) , Robert G. Palgrave (University College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Inorganic Chemistry

State: Published (Approved)
Published: March 2016

Abstract: Novel lead and bismuth dipyrido complexes have been synthesized and characterized by single-crystal X-ray diffraction, which shows their structures to be directed by highly oriented π-stacking of planar fully conjugated organic ligands. Optical band gaps are influenced by the identity of both the organic and inorganic component. Density functional theory calculations show optical excitation leads to exciton separation between inorganic and organic components. Using UV−vis, photoluminescence, and Xray photoemission spectroscopies, we have determined the materials’ frontier energy levels and show their suitability for photovoltaic device fabrication by use of electron- and hole-transport materials such as TiO2 and spiro-OMeTAD respectively. Such organic/ inorganic hybrid materials promise greater electronic tunability than the inflexible methylammonium lead iodide structure through variation of both the metal and organic components.

Subject Areas: Chemistry


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