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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Photofluorescence decay times of organic phosphors

Hamilton, T D S January 1957 (has links)
The absorption and emission of energy is a fundamental property of any atomic system.When the emission occurs in the visible or near visible region the phenomenon is usually referred to as luminescence or fluorescence. This must be distinguished from thermal radiation as it does not follow Kirchoff's law.
12

Room temperature phosphorescence and the dynamic aspects of protein structure

Saviotti, Maria Laura January 1975 (has links)
No description available.
13

High-Performance Organic Light Emitting Diodes

January 2019 (has links)
abstract: Organic electronics have remained a research topic of great interest over the past few decades, with organic light emitting diodes (OLEDs) emerging as a disruptive technology for lighting and display applications. While OLED performance has improved significantly over the past decade, key issues remain unsolved such as the development of stable and efficient blue devices. In order to further the development of OLEDs and increase their commercial potential, innovative device architectures, novel emissive materials and high-energy hosts are designed and reported. OLEDs employing step-wide graded-doped emissive layers were designed to improve charge balance and center the exciton formation zone leading to improved device performance. A red OLED with a peak efficiency of 16.9% and an estimated LT97 over 2,000 hours at 1,000 cd/m2 was achieved. Employing a similar structure, a sky-blue OLED was demonstrated with a peak efficiency of 17.4% and estimated LT70 over 1,300 hours at 1,000 cd/m2. Furthermore, the sky-blue OLEDs color was improved to CIE coordinates of (0.15, 0.25) while maintaining an efficiency of 16.9% and estimated LT70 over 600 hours by incorporating a fluorescent sensitizer. These devices represent literature records at the time of publication for efficient and stable platinum phosphorescent OLEDs. A newly developed class of emitters, metal-assisted delayed-fluorescence (MADF), are demonstrated to achieve higher-energy emission from a relatively low triplet energy. A green MADF device reaches a peak efficiency of 22% with an estimated LT95 over 350 hours at 1,000 cd/m2. Additionally, a blue charge confined OLED of PtON1a-tBu demonstrated a peak efficiency above 20%, CIE coordinated of (0.16, 0.27), and emission onset at 425 nm. High triplet energy hosts are required for the realization of stable and efficient deep blue emission. A rigid “M”-type carbazole/fluorene hybrid called mDCzPF and a carbazole/9-silafluorene hybrid called mDCzPSiF are demonstrated to have high triplet energies ET=2.88 eV and 3.03 eV respectively. Both hosts are demonstrated to have reasonable stability and can serve as a template for future material design. The techniques presented here demonstrate alternative approaches for improving the performance of OLED devices and help to bring this technology closer to widespread commercialization. / Dissertation/Thesis / Doctoral Dissertation Materials Science and Engineering 2019
14

The potential of phosphorescence spectroscopy as a method for studying protein conformation.

Larkindale, Philippa January 1971 (has links)
No description available.
15

Phosphorescence anisotropy studies of the protein moiety in human serum lipoproteins

Kim, Heiryun January 1977 (has links)
No description available.
16

The design, synthesis, characterization, and application of phosphorescent metal complexes /

Carlson, William Brenden, January 2003 (has links)
Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 159-164).
17

Radiation damage studies on radioluminous light sources

Kianjah, Mohammad January 1980 (has links)
No description available.
18

Relative luminescence quantum yields of biacetyl solutions

Greenberg, Stanley Arthur, 1935- January 1958 (has links)
No description available.
19

The potential of phosphorescence spectroscopy as a method for studying protein conformation.

Larkindale, Philippa January 1971 (has links)
No description available.
20

Phosphorescence anisotropy studies of the protein moiety in human serum lipoproteins

Kim, Heiryun January 1977 (has links)
No description available.

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