Highly Efficient Red Organic Light-Emitting Transistors (OLETs) on High-k Dielectric

ACS Photonics ◽  
2017 ◽  
Vol 4 (4) ◽  
pp. 800-805 ◽  
Author(s):  
Caterina Soldano ◽  
Riccardo D’Alpaos ◽  
Gianluca Generali
Keyword(s):  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
High K ◽  
Light Emitting Transistors ◽  
High K Dielectric

scholarly journals Efficient and Stable Solution-Processed Organic Light-Emitting Transistors Using a High-k Dielectric

ACS Photonics ◽  
2019 ◽  
Vol 6 (12) ◽  
pp. 3159-3165 ◽  
Author(s):  
Sungho Nam ◽  
Mujeeb Ullah Chaudhry ◽  
Kornelius Tetzner ◽  
Christopher Pearson ◽  
Chris Groves ◽  
...  
Keyword(s):  
Stable Solution ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
High K ◽  
Light Emitting Transistors ◽  
High K Dielectric

scholarly journals High-k Fluoropolymers Dielectrics for Low-Bias Ambipolar Organic Light Emitting Transistors (OLETs)

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7635
Author(s):  
Ahmed Albeltagi ◽  
Katherine Gallegos-Rosas ◽  
Caterina Soldano
Keyword(s):  
Polyvinylidene Fluoride ◽  
Light Output ◽  
Dielectric Films ◽  
Plastic Substrate ◽  
Light Emitting ◽  
Organic Light ◽  
Threshold Voltages ◽  
High K ◽  
Light Emitting Transistors ◽  
High K Dielectric

Organic light emitting transistors (OLETs) combine, in the same device, the function of an electrical switch with the capability of generating light under appropriate bias conditions. In this work, we demonstrate how engineering the dielectric layer based on high-k polyvinylidene fluoride (PVDF)-based polymers can lead to a drastic reduction of device driving voltages and the improvement of its optoelectronic properties. We first investigated the morphology and the dielectric response of these polymer dielectrics in terms of polymer (P(VDF-TrFE) and P(VDF-TrFE-CFE)) and solvent content (cyclopentanone, methylethylketone). Implementing these high-k PVDF-based dielectrics enabled low-bias ambipolar organic light emitting transistors, with reduced threshold voltages (<20 V) and enhanced light output (compared to conventional polymer reference), along with an overall improvement of the device efficiency. Further, we preliminary transferred these fluorinated high-k dielectric films onto a plastic substrate to enable flexible light emitting transistors. These findings hold potential for broader exploitation of the OLET platform, where the device can now be driven by commercially available electronics, thus enabling flexible low-bias organic electronic devices.

Highly Efficient Flexible Organic Light Emitting Transistor Based on High‐ k Polymer Gate Dielectric

2020 ◽  
Vol 8 (6) ◽  
pp. 1901651 ◽  
Author(s):  
Hongming Chen ◽  
Xing Xing ◽  
Jingsheng Miao ◽  
Changbin Zhao ◽  
Miao Zhu ◽  
...  
Keyword(s):  
Gate Dielectric ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
High K

Novel Carbazole-based Multifunctional Materials with Hybridized Local and Charge-Transfer Excited State Acting as Deep Blue Emitters and Phosphorescent Hosts for Highly Efficient Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Haitao Zhou ◽  
Mengna Yin ◽  
Zhenhong Zhao ◽  
Yanqin Miao ◽  
Xin Jin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Multifunctional Materials ◽  
Light Emitting ◽  
Highly Efficient ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

In this work, two carbazole- and benzo[d]oxazole-based novel multifunctional materials with hybridized local and charge-transfer (HLCT) characteristic, namely OCI and OCT, which could act as deep-blue fluorophors and phosphorescent hosts,...

Organic Light‐Emitting Transistors Entering a New Development Stage

2021 ◽  
pp. 2007149
Author(s):  
Zhengsheng Qin ◽  
Haikuo Gao ◽  
Huanli Dong ◽  
Wenping Hu
Keyword(s):  
Development Stage ◽  
Light Emitting ◽  
Organic Light ◽  
New Development ◽  
Light Emitting Transistors

Efficient organic light-emitting diodes based on iridium(III) complexes containing indolo[3,2,1-jk]carbazole derivatives with narrow emission bandwidths and low efficiency roll offs

2021 ◽  
Author(s):  
Xiang-Ji Liao ◽  
Jin-Jun Zhu ◽  
Li Yuan ◽  
Zhi-Ping Yan ◽  
Xu-Feng Luo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Carbazole Derivatives ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency ◽  
Narrow Emission

In this work, two cyclometalated ligands 2-(pyridin-2-yl)indolo[3,2,1-jk]carbazole (pyidcz) and 2-(4-(trifluoromethyl)pyridin-2-yl)indolo[3,2,1-jk]carbazole (tfpyidcz) using indolo[3,2,1-jk]carbazole unit were synthesized for highly efficient iridium(III) complexes (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) (tmd = 2,2,6,6-tetramethyl-3,5-heptanedione). The two Ir(III)...

scholarly journals Synaptic Plasticity Powering Long‐Afterglow Organic Light‐Emitting Transistors

2021 ◽  
pp. 2103369
Author(s):  
Yusheng Chen ◽  
Hanlin Wang ◽  
Yifan Yao ◽  
Ye Wang ◽  
Chun Ma ◽  
...  
Keyword(s):  
Synaptic Plasticity ◽  
Light Emitting ◽  
Long Afterglow ◽  
Organic Light ◽  
Light Emitting Transistors

Dendritic Luminescent Gold(III) Complexes for Highly Efficient Solution-Processable Organic Light-Emitting Devices

2012 ◽  
Vol 52 (1) ◽  
pp. 446-449 ◽  
Author(s):  
Man-Chung Tang ◽  
Daniel Ping-Kuen Tsang ◽  
Maggie Mei-Yee Chan ◽  
Keith Man-Chung Wong ◽  
Vivian Wing-Wah Yam
Keyword(s):  
Efficient Solution ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Solution Processable ◽  
Organic Light Emitting Devices
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