LD2668 .T4 1941 S55 / Master of Science

Thesis (Ph. D.)--Ohio state University, 1921. / Autobiography.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1929. / Typescript with manuscript equations. With this is bound: A two dimensional boundary value problem for the transmission of alternating currents through a semi-infinite heterogenous conducting medium / by Herbert Pu. Evans. Reprinted from Physical review, vol. 36, no. 10 (15 Nov. 1929), p. 1579-1588. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin. / Bound with v. 3, no. 2-v. 3, no. 6 subsequent to publication. Bibliography: p. 153-162.

The goal of this thesis is to identify and to explore novel ACTFEL phosphor materials. Several important materials properties relevant to ACTFEL phosphor development are identified. All of these properties cannot be obtained simultaneously. Therefore, several key phosphor materials properties are identified as critical to the development of an ACTFEL phosphor. Then, using basic chemical trends, several classes of potential ACTFEL phosphors are identified. These materials systems include halides, nitrides, oxynitrides, oxides, sulfides, and inhibited concentration quenching systems. Representative materials from some of these proposed novel ACTFEL phosphor materials system are developed and evaluated as electroluminescence phosphors. Most of the ACTFEL devices made using these materials do not show any significant charge transfer. Detailed analysis indicates that the most probable cause of the lack of charge injection is that the phosphor threshold field is too large. This excessively large threshold field may be associated with the energy depth of the interface states, the low density of the interface states, or the large effective mass of the phosphor material explored. Several possible alternative solutions are presented to reduce the threshold field of the phosphor. These includes the use of thick-film insulator, the use of a charge injection layer, the use of a ceramic substrate coupled with a high temperature interface reaction, and the use of bulk doping of the phosphor. / Graduation date: 1997

No description available.

Thesis (Ph. D.)--University of Chicago, 1941. / Lithoprinted. Includes bibliographical references.

Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xv, 129 p.; also includes graphics. Includes bibliographical references. Available online via OhioLINK's ETD Center.

Thesis (M. Phil.)--University of Hong Kong, 2010. / Includes bibliographical references (leaves 64-67). Also available in print.

Thesis (M. Phil.)--University of Hong Kong, 2010. / Includes bibliographical references (leaves 64-67). Also available online.