Crystalline inorganic–organic hybrid materials have been explored for decades. They are both fundamentally and technologically important due to the fact that they integrate the functionality of inorganic compounds (e.g., electronic, magnetic, optical, thermal, and mechanical properties) and the advantages of organic species (e.g., structural flexibility, ease processability, light weight, and low cost) into a single-crystal lattice. A number of structure types have been reported to date, all of which show great promise for energy-related applications. Inorganic-organic hybrid materials based on I-VII binary semiconductors have been studied intensively because of their unique photo-physical and photochemical properties, as well as their applications for light emitting devices, sensing devices, solar cells, and artificial photosynthesis. Therefore, my research has been focused on hybrid materials based on I-VII semiconductors, particularly for the purpose of developing better-performing rare-earth-elements (REEs) free lighting phosphors. The parent I-VII binary compounds are well-known for their optical properties. One of the well-studied members, copper iodide (CuI), exists in γ phase at room temperature, with a weak violet emission (λem = 420 nm). Though the luminescence of the parent structure is relatively poor, its hybrid materials, generally constructed though Cu-N/P/S covalent bond by reacting copper iodide with either aromatic or aliphatic organic ligands, generally exhibit interesting optical properties and enhanced photoluminescence. To meet the requirements as highly efficient phosphors for solid-state-lighting (SSL) technology, the materials should have a number of characteristics, such as high internal quantum yields (IQYs), high photo-/thermal stability and optical tunability, etc. The main strategy applied to develop CuI-based phosphors has been centered on fulfilling these requirements. In this thesis I describe the design, synthesis, structure characterization and modification, as well as comprehensive optical property study of various structure types with an emphasis on improving their photoluminescence performances, including the recently developed AIO type of structures as the most promising and best-performing CuI-based phosphors to date. Such new designing strategies and developing approaches may not only be applicable to the copper halide based inorganic-organic hybrid structures, but also be innovative and useful for the construction of many other material classes.
Subject (authority = RUETD)
Topic
Chemistry and Chemical Biology
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_8392
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xiv, 134 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Cuprous iodide
Note (type = statement of responsibility)
by Wei Liu
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.