Author: Eric Léon Anne Courtens
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages : 195
Book Description
The static distribution of the electric field in thin insulating crystals of DcS provided with various electrodes was investigated. It was found that, when non-injecting electrodes were used, contact barriers were formed which have the nature of the usual Schottky barriers known to exist on high-conductivity CdS. The square of the barrier thickness is linear in the applied voltage, and the barrier potential is related to the metal work-function, the electron affinity of CdS, and the Fermi level depth, as predicted by the simplest contact theory, without having to resort to surface states. The barrier thickness, which for insulators cannot be measured by any of the standard semiconductor procedures, was derived from the measurement of a fast-pulse photoeffect. A pulse photoeffect model was developed that successfully explains the results in terms of contact barriers. The barrier space-charge density can be related to the bulk density of centers. The barrier photoeffect model in CdS is dependent on the presence of native defects of relatively high density and electron cross-section. The properties of these centers are in agreement with previous reports. Slow sensitizing centers were also investigated, and their cross-section is in good agreement with previously-reported values. The results indicate how to prepare contacts that approach the flat band condition. This is shown to be important for accurate resistivity measurements on thin crystals. (Author).
Contact Properties and Related Conduction Phenomena in Insulating Cadmium Sulfide
Author: Eric Léon Anne Courtens
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages : 195
Book Description
The static distribution of the electric field in thin insulating crystals of DcS provided with various electrodes was investigated. It was found that, when non-injecting electrodes were used, contact barriers were formed which have the nature of the usual Schottky barriers known to exist on high-conductivity CdS. The square of the barrier thickness is linear in the applied voltage, and the barrier potential is related to the metal work-function, the electron affinity of CdS, and the Fermi level depth, as predicted by the simplest contact theory, without having to resort to surface states. The barrier thickness, which for insulators cannot be measured by any of the standard semiconductor procedures, was derived from the measurement of a fast-pulse photoeffect. A pulse photoeffect model was developed that successfully explains the results in terms of contact barriers. The barrier space-charge density can be related to the bulk density of centers. The barrier photoeffect model in CdS is dependent on the presence of native defects of relatively high density and electron cross-section. The properties of these centers are in agreement with previous reports. Slow sensitizing centers were also investigated, and their cross-section is in good agreement with previously-reported values. The results indicate how to prepare contacts that approach the flat band condition. This is shown to be important for accurate resistivity measurements on thin crystals. (Author).
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages : 195
Book Description
The static distribution of the electric field in thin insulating crystals of DcS provided with various electrodes was investigated. It was found that, when non-injecting electrodes were used, contact barriers were formed which have the nature of the usual Schottky barriers known to exist on high-conductivity CdS. The square of the barrier thickness is linear in the applied voltage, and the barrier potential is related to the metal work-function, the electron affinity of CdS, and the Fermi level depth, as predicted by the simplest contact theory, without having to resort to surface states. The barrier thickness, which for insulators cannot be measured by any of the standard semiconductor procedures, was derived from the measurement of a fast-pulse photoeffect. A pulse photoeffect model was developed that successfully explains the results in terms of contact barriers. The barrier space-charge density can be related to the bulk density of centers. The barrier photoeffect model in CdS is dependent on the presence of native defects of relatively high density and electron cross-section. The properties of these centers are in agreement with previous reports. Slow sensitizing centers were also investigated, and their cross-section is in good agreement with previously-reported values. The results indicate how to prepare contacts that approach the flat band condition. This is shown to be important for accurate resistivity measurements on thin crystals. (Author).
Technical Abstract Bulletin
Author: Defense Documentation Center (U.S.)
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 784
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 784
Book Description
Electrical Properties of Solids
Author: T. F. Connolly
Publisher: Springer Science & Business Media
ISBN: 1468462075
Category : Science
Languages : en
Pages : 115
Book Description
Since 1963 the Research Materials Information Center has been answering inquiries on the availability, preparation, and properties of ultrapure inorganic research specimens. It has been possible to do this with reasonable efficiency by searching an automated coded microfilm collection of the report and open literature and of data sheets and question naires provided by commercial and research producers of pure materials. With the growth of the collection to over 70,000 documents and the increase in the demand for more general background information, it has been necessary to compile bibliographies on an increasing variety of subjects. These have been used as indexes to the microfilmed documents for more efficient searching, and in the past distributed in response to individual requests. However, their size and number no longer permit so casual and uneconomic a method of distribution. The "ORNL Solid State Physics Literature Guides" is a practical alternative. Organization The subject organization of the bibliography is given by the Table of Contents. Each section is preceded by a collection of reviews, bibliographies, and "general" papers (i.e., those dealing with methods or equipment rather than single materials, or with such a wide variety of materials that no subsection was appropriate). Coverage is generally from 1960 to mid-1970. Emphasis is on inorganic materials.
Publisher: Springer Science & Business Media
ISBN: 1468462075
Category : Science
Languages : en
Pages : 115
Book Description
Since 1963 the Research Materials Information Center has been answering inquiries on the availability, preparation, and properties of ultrapure inorganic research specimens. It has been possible to do this with reasonable efficiency by searching an automated coded microfilm collection of the report and open literature and of data sheets and question naires provided by commercial and research producers of pure materials. With the growth of the collection to over 70,000 documents and the increase in the demand for more general background information, it has been necessary to compile bibliographies on an increasing variety of subjects. These have been used as indexes to the microfilmed documents for more efficient searching, and in the past distributed in response to individual requests. However, their size and number no longer permit so casual and uneconomic a method of distribution. The "ORNL Solid State Physics Literature Guides" is a practical alternative. Organization The subject organization of the bibliography is given by the Table of Contents. Each section is preceded by a collection of reviews, bibliographies, and "general" papers (i.e., those dealing with methods or equipment rather than single materials, or with such a wide variety of materials that no subsection was appropriate). Coverage is generally from 1960 to mid-1970. Emphasis is on inorganic materials.
Abstracts of AF Materials Laboratory Reports
Author: Air Force Materials Laboratory (U.S.)
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 270
Book Description
Technical reports published by the Air Force Materials Laboratory during the period 1 January 1967-31 December 1967 are abstracted herein and indexed by branches of the laboratory, technical subject matter, investigator, project monitor and contractor. Reports on research conducted by the Air Force Materials Laboratory personnel as well as that conducted on contract are included.
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 270
Book Description
Technical reports published by the Air Force Materials Laboratory during the period 1 January 1967-31 December 1967 are abstracted herein and indexed by branches of the laboratory, technical subject matter, investigator, project monitor and contractor. Reports on research conducted by the Air Force Materials Laboratory personnel as well as that conducted on contract are included.
Comprehensive Dissertation Index
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 892
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 892
Book Description
Publications and Theses for the Year Ending June 30 ...
Author: Massachusetts Institute of Technology
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 380
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 380
Book Description
NBS Technical Note
Author:
Publisher:
ISBN:
Category : Physical instruments
Languages : en
Pages : 204
Book Description
Publisher:
ISBN:
Category : Physical instruments
Languages : en
Pages : 204
Book Description
Cadmium Sulfide
Author: M. Neuberger
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages :
Book Description
National Union Catalog
Author:
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 648
Book Description
Includes entries for maps and atlases.
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 648
Book Description
Includes entries for maps and atlases.
Measurement and Interpretation of Transient Electronic Phenomena in Cadmium Sulfide
Author: Richard Anton Greiner
Publisher:
ISBN:
Category : Cadmium sulfide photoconductive cells
Languages : en
Pages : 214
Book Description
Publisher:
ISBN:
Category : Cadmium sulfide photoconductive cells
Languages : en
Pages : 214
Book Description