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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.
461

The characteristic of 1,3,5-Tri(1-pyrenyl)benzene(TPB3) and the performance of organic light-emitting device

Cheng, Yu-sung 21 August 2009 (has links)
It has been found that the results of 1,3,5-Tri(1-pyrenyl)benzene (TPB3) on the processing conditions of different depositon rates affect the morphology of thin films and the electroluminescent performance of the devices. At TPB3 deposition low rate, the average roughness of TPB3 thin film was much smoother comparing to high rate, the surface approached morphology and the wavelength peak was around 508nm. At TPB3 deposition high rate, the surface approached amorphous and the wavelength peak was around 476nm. Take advantage of varing deposition rates with different spectra to apply for colorful OLEDs. This research includes three parts as mentioned: (1) red organic light-emitting devices and (2) green organic light-emitting devices and (3) white organic light-emitting devices. In order to overlap perfectly between the host and dopant materials, we fabricated the red organic electroluminescent devices incorporating TPB3 at deposition low rate as the host material and 4-(dicyanomethylene )-2-tert-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) as red light-emitting dye and the green organic electroluminescent devices incorporating TPB3 at deposition high rate as the host material and 2,3,6,7-tetrahydro-1,1,7,7,-tetramethyl-1H,5H,11H-10(2- benzothiazolyl)quinolizine-[9,9a,1gh]coumarin (C545T) as green light-emitting dye, respectively. First, we deposited TPB3 at the lower rate of 0.1 Å/sec as the host material doped the red dopant, DCJTB, for making red OLEDs. The device: ITO(130nm)/NPB(65nm)/TPB3: 2% DCJTB(40nm)/Alq3(30nm) /LiF(0.8nm)/Al(200nm) exhibited a maximum luminance at 13.5V of 70600 cd/m2, ca. four times higher than that of the device using Alq3 as the host material at the same potential. The maximum current and power efficiencies were 4.83 cd/A and 3.7 lm/W, respectively. The current and power efficiencies were greater than 4 cd/A and 1 lm/W, respectively, over the large range of potentials (3.5~13.5V) with good Commission Internationale de l¡¦Eclairage (CIE) coordinates of (0.63,0.37). These results indicate that searching for a suitable host material is a promising approach toward achieving high-efficiency red OLEDs. The second, we deposited TPB3 at the higher rate of 3.0 Å/sec as the host material doped the green dopant C545T in order to overlap perfectly between them for spectra in green OLEDs. The device: ITO(130nm) /NPB(65nm) /TPB3: 1%C545T(40nm) /Alq3(30nm) /LiF(0.8nm) /Al(200nm) exhibited a maximum luminance at 11.5V of 166000 cd/m2, it¡¦s higher than that of the device using Alq3 as the host material at the same potential. The maximum current and power efficiencies were 10.0 cd/A and 6.67 lm/W, respectively. The current and power efficiencies were greater than 7.98 cd/A and 2.28 lm/W, respectively, over the large range of potentials (4.0~11.0V) with good Commission Internationale de l¡¦Eclairage (CIE) coordinates of (0.31, 0.61). These results indicate that TPB3 OLEDs are good than Alq3 OLEDs.. For TPB3 white OLEDs, we deposited TPB3 at the higher rate of 3.0 Å/sec as the host material doped the red dopant DCJTB in order to make high color purity white OLEDs. The device: ITO(130nm) /NPB(65nm) /TPB3: 0.05%DCJTB(40nm) /Alq3(30nm) /LiF(0.8nm) /Al(200nm) exhibited a maximum luminance at 11.5V of 55690 cd/m2, the maximum current and power efficiencies were 4.57 cd/A and 3.01 lm/W, respectively. The current and power efficiencies were greater than 3 cd/A and 0.91 lm/W, respectively, over the large range of potentials (3.5~11.5V) with good Commission Internationale de l¡¦Eclairage (CIE) coordinates of (0.34 , 0.34)~(0.33 , 0.33). These results indicate that TPB3 white OLEDs have good luminance and color purity.
462

Research on the Development of Green and Eco-port in Kaohsiung

Chen, Yu-Wen 10 September 2009 (has links)
The sea transport is a foundation of world¡¦s development that has driven the development of industrialization at the surrounding area of the port. However, the excessive use and development have caused the port environments of a lot of countries to face the awkward situation of great pollution. The harbor of Kaohsiung is one of Taiwan¡¦s large international commercial ports, while becoming Asian-Pacific Operation Centre, but it is facing the challenge for being a port in achieving the sustainable industrialization as well as a clean environmental harbor city. The present research is initiated to collect the data information of international major ports on their organization related to environmental protection measures in achieving their targets to develop the Green port and Eco-port. These consists of the methodology development and strategy on fulfilling the green policy of the environmental obligation and building the goal of sustainable environment to reduce the impact of environment, life and ecology owning to the development of port. The case studies include long beach and Los Angeles of USA, Hong Kong, Amsterdam and Rotterdam of Holland, Yokohama and Osaka of Japan, Tianjin of China. Our objective is to summing up and analyzing these case studies for suggestions that can provide the direction to Kaohsiung plan to become a Green port and Eco-port. Comparing to Marine Environmental Protection Committee (MEPC) guidelines on demanding the continuously decrease of the sulfurous content of fuels to prevent port environment from more pollution, Taiwan government is lack of stipulating policies about the environmental measures for the port, but blindly pursuing economic growth and unlimitedly to enlarge the ships. These cause the deterioration of environment to an irreversible situation. For the long-term development of the harbor, Taiwan government should take advantage of IT to improve the service-quality, integrate the harbor and regenerate the river bank for achieving the goal of coexistence between development and conservation in order to reform the port of Kaohsiung to be the first Green Harbor in Taiwan.
463

Phénomène de concentration pour des équations avec nonlinéarités surcritiques

Jing, Ruihua Pacard, Franck. Zhou, Feng. January 2007 (has links) (PDF)
Thèse de doctorat : Mathématiques appliquées : Paris 12 : 2005. Thèse de doctorat : Applied mathematics : East China Normal University : 2005. / Version électronique uniquement consultable au sein de l'Université Paris 12 (Intranet). Thèse soutenue en co-tutelle. Titre provenant de l'écran-titre. Bibliogr. : 62 réf.
464

Analyse des fissures elliptiques en statique et en fatigue par hybridation de fonctions de Green

Hachi, Brahim El Khalil Taghite, M'Barek. January 2007 (has links) (PDF)
Thèse de doctorat : Mécanique et énergétique : INPL : 2007. / Titre provenant de l'écran-titre. Bibliogr.
465

Effects of green tea on bone loss in mature ovariectomized rat

Yung, Koon-yu, Samuel. January 2001 (has links)
Thesis (M. Med. Sc.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 44-57).
466

Sequencing and characterization of the potentially pathogenic genes of green turtle herpesvirus /

Nigro, Olivia. January 2003 (has links)
Thesis (M.S.)--University of Hawaii at Manoa, 2003. / Includes bibliographical references (leaves 80-85). Also available via World Wide Web.
467

Green tea antioxidants inhibition of oxidation and mutation

McConnell, Paul S. January 2001 (has links)
Thesis (M.S.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains ix, 38 p. : ill. Includes abstract. Includes bibliographical references.
468

A new method of making particleboard with a formaldehyde-free soy-based adhesive /

Prasittisopin, Lapyote. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 57-61). Also available on the World Wide Web.
469

The relationship between green sea urchin spawning, Spring phytoplankton blooms, and the Winter-Spring hydrography at selected sited in Maine /

Seward, Lindsay C. N., January 2002 (has links)
Thesis (M.S.) in Zoology--University of Maine, 2002. / Includes vita. Includes bibliographical references (leaves 97-110).
470

Induction and regulation of dissolved inorganic carbon transport in green algae /

Bozzo, Gale Giancarlo. January 2000 (has links)
Thesis (M.Sc.)--York University, 2000. Graduate Programme in Biology. / Typescript. Includes bibliographical references (leaves 65-72). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ56165

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