19‐4: Ultra‐Long‐Life Deep‐Blue OLED Device Achieved by Controlling the Carrier Recombination Site

2021 ◽  
Vol 52 (1) ◽  
pp. 236-239
Author(s):  
Takuya Ishimoto ◽  
Naoaki Hashimoto ◽  
Shiho Nomura ◽  
Takumu Okuyama ◽  
Hiromi Nowatari ◽  
...  
Keyword(s):  
Recombination Site ◽  
Oled Device ◽  
Deep Blue ◽  
Carrier Recombination ◽  
Long Life

21.3: A 13.5-in. Quad-FHD Flexible CAAC-OS AMOLED Display with Long-Life OLED Device Structure

2014 ◽  
Vol 45 (1) ◽  
pp. 271-274 ◽  
Author(s):  
Shogo Uesaka ◽  
Ryohei Yamaoka ◽  
Toshiki Sasaki ◽  
Akihiro Chida ◽  
Susumu Kawashima ◽  
...  
Keyword(s):  
Device Structure ◽  
Oled Device ◽  
Long Life

A 13.5-in. Quad-FHD flexible CAAC-OS AMOLED display with long-life OLED device structure

2014 ◽  
Vol 22 (12) ◽  
pp. 603-612 ◽  
Author(s):  
Shogo Uesaka ◽  
Ryohei Yamaoka ◽  
Toshiki Sasaki ◽  
Akihiro Chida ◽  
Susumu Kawashima ◽  
...  
Keyword(s):  
Device Structure ◽  
Oled Device ◽  
Long Life

scholarly journals Protecting benzylic C–H bonds by deuteration doubles the operational lifetime of deep blue Ir-phenylimidazole dopants in phosphorescent OLEDs

2020 ◽  
Author(s):  
Hyejin Bae ◽  
Jong Soo Kim ◽  
Alexander Yakubovich ◽  
Jinhoon Jeong ◽  
Sangho Park ◽  
...  
Keyword(s):  
Chemical Change ◽  
Industrial Applications ◽  
Organic Light Emitting Diodes ◽  
Oled Device ◽  
Light Emitting ◽  
Deep Blue ◽  
Kinetic Isotope ◽  
Operational Lifetime ◽  
Device Lifetime ◽  
Blue Phosphorescent

Abstract Much effort has been dedicated to increase the operational lifetime of blue phosphorescent materials in organic light-emitting diodes (OLEDs), but the reported device lifetimes are still too short for the industrial applications. An attractive method for increasing the lifetime of a given emitter without making any chemical change is exploiting the kinetic isotope effect, where key C–H bonds are deuterated. A computer model identified that the most vulnerable molecular site in an Ir-phenylimidazole dopant is the benzylic C–H bond and predicted that deuteration may lower the deactivation pathway involving C–H/D cleavage notably. Experiments showed that the device lifetime (T70) of a prototype phosphorescent OLED device could be doubled to 355 hours with a maximum external quantum efficiency of 25.1% at 1000 cd/m2. This is one of the best operational performances of blue phosphorescent OLEDs observed to date in a single stacked cell.

Luminescence from individual dislocations in II-VI and III-V semiconductors

1991 ◽  
Vol 49 ◽  
pp. 834-835
Author(s):  
J W Steeds
Keyword(s):  
Group Iv ◽  
Luminescence Properties ◽  
Carrier Recombination ◽  
Transmission Electron ◽  
Wide Range ◽  
Basic Physics ◽  
Semiconducting Compounds ◽  
Diamond Group ◽  
Non Destructive ◽  
Technological Significance

There is a wide range of experimental results related to dislocations in diamond, group IV, II-VI, III-V semiconducting compounds, but few of these come from isolated, well-characterized individual dislocations. We are here concerned with only those results obtained in a transmission electron microscope so that the dislocations responsible were individually imaged. The luminescence properties of the dislocations were studied by cathodoluminescence performed at low temperatures (~30K) achieved by liquid helium cooling. Both spectra and monochromatic cathodoluminescence images have been obtained, in some cases as a function of temperature.There are two aspects of this work. One is mainly of technological significance. By understanding the luminescence properties of dislocations in epitaxial structures, future non-destructive evaluation will be enhanced. The second aim is to arrive at a good detailed understanding of the basic physics associated with carrier recombination near dislocations as revealed by local luminescence properties.

Recollections of a Long Life

2009 ◽  
Author(s):  
John Cam Hobhouse
Keyword(s):  
Long Life

Dying for a long life

Nature ◽  
2011 ◽  
Author(s):  
Ewen Callaway
Keyword(s):  
Long Life

Capaian pembangunan manusia: analisis komparatif Provinsi Banten, Jawa Barat dan DKI Jakarta

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Adriwati Adriwati
Keyword(s):  
Human Development ◽  
Human Development Index ◽  
Human Population ◽  
Provincial Government ◽  
Healthy Life ◽  
Development Index ◽  
Long Life ◽  
The Difference ◽  
The Government ◽  
Development Paradigm

Human development is a development paradigm that puts human (population) as the focus and final target of all development activities, namely the achievement of control over resources (income to achieve decent living), improvement of health status (long life and healthy life) and improve education. To see the success rate of human development, UNDP publishes an indicator of Human Development Index (HDI). This study discusses the achievements of human development that have been pursued by the government. The problem analyzed in this research is the difference of human development achievement in some provincial government in Indonesia. This paper aims to compare the achievements of human development in some provincial governments seen from the achievement of human development index of each province. Research location in Banten Province, West Java and DKI Jakarta.Keywords:Human Development Index, Human Development Achievement

A Comparative Overview of the Fair Wear and Tear Exception: the Duty of Holders of Temporary Interests to Preserve Property

2002 ◽  
Vol 6 (1) ◽  
pp. 85-100
Author(s):  
Raffaele Caterina
Keyword(s):  
Common Core ◽  
Complete Solution ◽  
Roman Law ◽  
Private Ownership ◽  
Legal Systems ◽  
Personal Rights ◽  
Wear And Tear ◽  
Long Life ◽  
The Law ◽  
The Relationship

“A system of private ownership must provide for something more sophisticated than absolute ownership of the property by one person. A property owner needs to be able to do more than own it during his lifetime and pass it on to someone else on his death.”1 Those who own things with a long life quite naturally feel the urge to deal in segments of time. Most of the owner's ambitions in respect of time can be met by the law of contract. But contract does not offer a complete solution, since contracts create only personal rights. Certain of the owner's legitimate wishes can be achieved only if the law allows them to be given effect in rem—that is, as proprietary rights. Legal systems have responded differently to the need for proprietary rights limited in time. Roman law created usufruct and other iura in re aliena; English law created different legal estates. Every system has faced similar problems. One issue has been the extent to which the holder of a limited interest should be restricted in his or her use and enjoyment in order to protect the holders of other interests in the same thing. A common core of principles regulates the relationship between those who hold temporary interests and the reversioners. For instance, every system forbids holder of the possessory interest to damage the thing arbitrarily. But other rules are more controversial. This study focuses upon the rules which do not forbid, but compel, certain courses of action.

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