Title Molecular Orientation and Emission Characteristics of Ir Complexes and Exciplex in Organic Thin Films Author(s) Moon, Chang-Ki Publication Singapore, Springer Singapore, 2019. Description XXIX, 76 p. 37 illus., 32 illus. in color : online resource Abstract Note This thesis considers molecular orientation in thin films and introduces an optical model describing this orientation as applied to organic light-emitting diodes (OLEDs). It also describes the electronic structure of intermolecular charge transfer excitons correlated to molecular orientation in solids. It has long been known that molecular orientation influences the electrical and optical properties of molecular films. One notable example is in liquid crystals where rigid rod or disk shaped molecules are commonly used. Understanding the origin of the molecular orientation and its control by surface treatment and electric field resulted in the development of liquid crystal displays. The same thing has happened in organic electronics, and considerable effort has been devoted to understanding and controlling molecular orientation in solid films to improve charge carrier mobility and light absorption, ultimately to improve the performance of organic solar cells and thin film transistors. In contrast, less attention has been paid to molecular orientation and its influence on the characteristics of OLEDs, probably because of the use of amorphous films rather than micro-crystalline films, and it is only in recent years that some molecular films are known to have preferred orientation. This thesis addresses this topic, focusing on OLEDs, describing the origin and control of the orientation of phosphorescent Ir complexes possessing spherical shape rather than rod or disk shape, the simulation of the optical characteristics of OLEDs influenced by preferred molecular orientation, and finally the orientation of intermolecular charge transfer excitons and its correlation to electronic structures in thin films ISBN,Price 9789811360558 Keyword(s) 1. CLASSICAL ELECTRODYNAMICS 2. EBOOK 3. EBOOK - SPRINGER 4. ELECTRODYNAMICS 5. Electronic materials 6. ELECTRONICS 7. Electronics and Microelectronics, Instrumentation 8. Interfaces (Physical sciences) 9. Materials???Surfaces 10. MICROELECTRONICS 11. Optical and Electronic Materials 12. OPTICAL MATERIALS 13. OPTICS 14. Surface and Interface Science, Thin Films 15. Surfaces (Physics) 16. Surfaces and Interfaces, Thin Films 17. THIN FILMS Item Type eBook Multi-Media Links Please Click here for eBook Circulation Data Accession#   Call# Status Issued To Return Due On Physical Location I08884     On Shelf