The impact of ZnO nanotube on the performance of hybrid inorganic/organic light-emitting diode as a single-mode ring-core UV waveguide

In the last 10 years, carbon dots (CDs) synthesized from renewable organic resources have been gathered a considerable amount of attention in different fields for their peculiar photoluminescent properties. Moreover, the synthesis of CDs fully responds to the principles of the circular chemistry and the concept of safe-by-design. This review will focus on the different strategies for the incorporation of CDs in organic light-emitting devices (OLEDs) and on the study of the impact of CDs properties on the OLEDs performance. The main current research outcomes and highlights are summarized to guide users towards the fully exploitation of use these materials in optoelectronic applications.

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Carbon Dots as a Sustainable New Platform for Organic Light Emitting Diode

Coatings ◽

10.3390/coatings11010005 ◽

2020 ◽

Vol 11 (1) ◽

pp. 5

Author(s):

Paola Lagonegro ◽

Umberto Giovanella ◽

Mariacecilia Pasini

Keyword(s):

Carbon Dots ◽

Raw Materials ◽

Light Emitting Diode ◽

Renewable Raw Materials ◽

Light Emitting ◽

Light Emitting Devices ◽

Organic Light Emitting Diode ◽

Organic Light ◽

The Impact ◽

Safe By Design

Over the past 10 years, carbon dots (CDs) synthesized from renewable raw materials have received considerable attention in several fields for their unique photoluminescent properties. Moreover, the synthesis of CDs fully responds to the principles of circular chemistry and the concept of safe-by-design. This review will focus on the different strategies for incorporation of CDs in organic light-emitting devices (OLEDs) and on the study of the impact of CDs properties on OLED performance. The main current research outcomes and highlights are summarized to guide users towards full exploitation of these materials in optoelectronic applications.

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Top-Emission Organic Light Emitting Diode Fabrication Using High Dissipation Graphite Substrate

International Journal of Photoenergy ◽

10.1155/2014/319390 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6

Author(s):

Yu-Sheng Tsai ◽

Lin-Ann Hong ◽

Jian-Ji Huang ◽

Kuan-Hung Yeh ◽

Fuh-Shyang Juang

Keyword(s):

Heat Dissipation ◽

Light Emitting Diode ◽

Copper Substrate ◽

Graphite Substrate ◽

Graphite Fiber ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Organic Light ◽

Temperature Rate ◽

The Impact

This study uses a synthetic graphite fiber as the heat dissipation substrate for top-emission organic light emitting diode (TEOLED) to reduce the impact from joule heat. UV glue (YCD91) was spin coated onto the substrate as the insulation layer. The TEOLED structure is (glass; copper; graphite) substrate/YCD91 glue/Al/Au/EHI608/TAPC/Alq3/LiF/Al/Ag. The proposed graphite fiber substrate presents better luminous performance compared with glass and copper substrate devices with luminance of 3055 cd/m2and current efficiency of 6.11 cd/A at 50 mA/cm2. When lighting period of different substrates TEOLED, the substrate case back temperature was observed using different lighting periods. A glass substrate element operating from 5 to 25 seconds at 3000 cd/m2luminance produced a temperature rate of 1.207°C/sec. Under 4000 cd/m2luminance the copper and graphite substrate temperature rates were 0.125°C/sec and 0.088°C/sec. Graphite component lifetime was determined to be 1.875 times higher than the glass components and 1.125 times higher than that of copper.

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