Light-emitting field-effect transistors with EQE over 20% enabled by a dielectric-quantum dots-dielectric sandwich structure

2021 ◽  
Author(s):  
Lingmei Kong ◽  
Jialong Wu ◽  
Yunguo Li ◽  
Fan Cao ◽  
Feijiu Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Field Effect ◽  
Sandwich Structure ◽  
Field Effect Transistors ◽  
Light Emitting

Quantum Dots - Properties and Applications

2021 ◽  
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Solar Cells ◽  
Field Effect ◽  
Light Emitting Diodes ◽  
Field Effect Transistors ◽  
Light Emitting ◽  
Synthesis Properties ◽  
Biomedical Diagnostics

The book provides a thorough survey of current research in quantum dots synthesis, properties, and applications. The unique properties of these new nanomaterials offer multifunctional applications in such fields as photovoltaics, light-emitting diodes, field-effect transistors, lasers, photodetectors, solar cells, biomedical diagnostics and quantum computing.

Organic-inorganic hybrid thin film light-emitting devices: interfacial engineering and device physics

2021 ◽  
Author(s):  
Chunxiu Zang ◽  
Mengxin Xu ◽  
Letian Zhang ◽  
Shihao Liu ◽  
Wenfa Xie
Keyword(s):  
Thin Film ◽  
Quantum Dots ◽  
Sandwich Structure ◽  
Device Physics ◽  
Hybrid Thin Film ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Interfacial Engineering ◽  
Organic Light

Thin film light-emitting devices (LEDs) with sandwich structure, such as organic light emitting devices (OLEDs), quantum dots LEDs (QLEDs) and perovskite LEDs (PeLEDs), have attracted wide attentions because of their...

scholarly journals Large Area Emission in p-Type Polymer-Based Light-Emitting Field-Effect Transistors by Incorporating Charge Injection Interlayers

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 901
Author(s):  
Gizem Acar ◽  
Muhammad Javaid Iqbal ◽  
Mujeeb Ullah Chaudhry
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Charge Injection ◽  
Limiting Factors ◽  
Hole Injection ◽  
Large Area ◽  
Device Structure ◽  
Light Emitting ◽  
Emission Area ◽  
P Type

Organic light-emitting field-effect transistors (LEFETs) provide the possibility of simplifying the display pixilation design as they integrate the drive-transistor and the light emission in a single architecture. However, in p-type LEFETs, simultaneously achieving higher external quantum efficiency (EQE) at higher brightness, larger and stable emission area, and high switching speed are the limiting factors for to realise their applications. Herein, we present a p-type polymer heterostructure-based LEFET architecture with electron and hole injection interlayers to improve the charge injection into the light-emitting layer, which leads to better recombination. This device structure provides access to hole mobility of ~2.1 cm2 V−1 s−1 and EQE of 1.6% at a luminance of 2600 cd m−2. Most importantly, we observed a large area emission under the entire drain electrode, which was spatially stable (emission area is not dependent on the gate voltage and current density). These results show an important advancement in polymer-based LEFET technology toward realizing new digital display applications.

scholarly journals Oligofuran–Benzothiadiazole Co-oligomers: Synthesis, Optoelectronic Properties and Reactivity

2021 ◽  
Vol 03 (02) ◽  
pp. 303-308
Author(s):  
Dror Ben Abba Amiel ◽  
Choongik Kim ◽  
Ori Gidron
Keyword(s):  
Organic Solar Cells ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Active Materials ◽  
Light Emitting ◽  
Organic Light ◽  
Donor Acceptor ◽  
Optical Bandgaps

Donor–acceptor–donor (DAD) triad systems are commonly applied as active materials in ambipolar organic field-effect transistors, organic solar cells, and NIR-emitting organic light-emitting diodes. Often, these triads utilize oligothiophenes as donors, whereas their oxygen-containing analogs, oligofurans, are far less studied in this setup. Here we introduce a family of DAD triads in which the donors are oligofurans and the acceptor is benzothiadiazole. In a combined computational and experimental study, we show that these triads display optical bandgaps similar to those of their thiophene analogs, and that a bifuran donor is sufficient to produce emission in the NIR spectral region. The presence of a central acceptor unit increases the photostability of oligofuran-based DAD systems compared with parent oligofurans of the similar length.

All Solution-Processed, Hybrid Light Emitting Field-Effect Transistors

2014 ◽  
Vol 26 (37) ◽  
pp. 6410-6415 ◽  
Author(s):  
Khalid Muhieddine ◽  
Mujeeb Ullah ◽  
Bhola N. Pal ◽  
Paul Burn ◽  
Ebinazar B. Namdas
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Solution Processed ◽  
Light Emitting

Highly Efficient Single-Layer Polymer Ambipolar Light-Emitting Field-Effect Transistors

2012 ◽  
Vol 24 (20) ◽  
pp. 2728-2734 ◽  
Author(s):  
Michael C. Gwinner ◽  
Dinesh Kabra ◽  
Matthew Roberts ◽  
Thomas J. K. Brenner ◽  
Bodo H. Wallikewitz ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Single Layer ◽  
Light Emitting ◽  
Highly Efficient
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