scholarly journals Colloidal quantum dot light-emitting diode architectures for high performance

2016 ◽  
Author(s):  
Kheng Swee Leck
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Colloidal Quantum Dot

scholarly journals Silicon Quantum Dot Light Emitting Diode at 620 nm

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 318 ◽  
Author(s):  
Hiroyuki Yamada ◽  
Naoto Shirahata
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diode ◽  
Optically Active ◽  
Driving Voltage ◽  
Device Structure ◽  
Light Emitting ◽  
Naked Eye ◽  
Turn On ◽  
Silicon Quantum Dot

Here we report a quantum dot light emitting diode (QLED), in which a layer of colloidal silicon quantum dots (SiQDs) works as the optically active component, exhibiting a strong electroluminescence (EL) spectrum peaking at 620 nm. We could not see any fluctuation of the EL spectral peak, even in air, when the operation voltage varied in the range from 4 to 5 V because of the possible advantage of the inverted device structure. The pale-orange EL spectrum was as narrow as 95 nm. Interestingly, the EL spectrum was narrower than the corresponding photoluminescence (PL) spectrum. The EL emission was strong enough to be seen by the naked eye. The currently obtained brightness (∼4200 cd/m2), the 0.033% external quantum efficiency (EQE), and a turn-on voltage as low as 2.8 V show a sufficiently high performance when compared to other orange-light-emitting Si-QLEDs in the literature. We also observed a parasitic emission from the neighboring compositional layer (i.e., the zinc oxide layer), and its intensity increased with the driving voltage of the device.

Enhanced electroluminescence of all‐inorganic colloidal quantum dot light‐emitting diode by optimising the MoO 3 intermediate layer

2014 ◽  
Vol 9 (6) ◽  
pp. 421-424 ◽  
Author(s):  
Liyuan Tang ◽  
Junliang Zhao ◽  
Xiaoli Zhang ◽  
Haitao Dai ◽  
Xiaowei Sun
Keyword(s):  
Quantum Dot ◽  
Intermediate Layer ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Colloidal Quantum Dot

Colloidal quantum dot ligand engineering for high performance solar cells

2016 ◽  
Vol 9 (4) ◽  
pp. 1130-1143 ◽  
Author(s):  
Ruili Wang ◽  
Yuequn Shang ◽  
Pongsakorn Kanjanaboos ◽  
Wenjia Zhou ◽  
Zhijun Ning ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Optoelectronic Devices ◽  
Colloidal Quantum Dots ◽  
Solution Processed ◽  
Light Emitting ◽  
Colloidal Quantum Dot

Colloidal quantum dots (CQDs) are fast-improving materials for next-generation solution-processed optoelectronic devices such as solar cells, photocatalysis, light emitting diodes, and photodetectors.

High-Performance Transparent Quantum Dot Light-Emitting Diode with Patchable Transparent Electrodes

2019 ◽  
Vol 11 (29) ◽  
pp. 26333-26338 ◽  
Author(s):  
Sunho Kim ◽  
Jungwoo Kim ◽  
Daekyoung Kim ◽  
Bongsung Kim ◽  
Heeyeop Chae ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diode ◽  
Transparent Electrodes ◽  
Light Emitting

scholarly journals Emergence of Impurity-Doped Nanocrystal Light-Emitting Diodes

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1226
Author(s):  
Dongxiang Luo ◽  
Lin Wang ◽  
Ying Qiu ◽  
Runda Huang ◽  
Baiquan Liu
Keyword(s):  
Quantum Dot ◽  
Quantum Well ◽  
High Performance ◽  
Light Emitting Diodes ◽  
State Of The Art ◽  
Material Design ◽  
Light Emitting ◽  
Impurity Doped ◽  
Colloidal Quantum Dot ◽  
Increasing Demand

In recent years, impurity-doped nanocrystal light-emitting diodes (LEDs) have aroused both academic and industrial interest since they are highly promising to satisfy the increasing demand of display, lighting, and signaling technologies. Compared with undoped counterparts, impurity-doped nanocrystal LEDs have been demonstrated to possess many extraordinary characteristics including enhanced efficiency, increased luminance, reduced voltage, and prolonged stability. In this review, recent state-of-the-art concepts to achieve high-performance impurity-doped nanocrystal LEDs are summarized. Firstly, the fundamental concepts of impurity-doped nanocrystal LEDs are presented. Then, the strategies to enhance the performance of impurity-doped nanocrystal LEDs via both material design and device engineering are introduced. In particular, the emergence of three types of impurity-doped nanocrystal LEDs is comprehensively highlighted, namely impurity-doped colloidal quantum dot LEDs, impurity-doped perovskite LEDs, and impurity-doped colloidal quantum well LEDs. At last, the challenges and the opportunities to further improve the performance of impurity-doped nanocrystal LEDs are described.

High-performance crosslinked colloidal quantum-dot light-emitting diodes

2009 ◽  
Vol 3 (6) ◽  
pp. 341-345 ◽  
Author(s):  
Kyung-Sang Cho ◽  
Eun Kyung Lee ◽  
Won-Jae Joo ◽  
Eunjoo Jang ◽  
Tae-Ho Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Colloidal Quantum Dot

Magnetron-Sputtered Amorphous V2O5 Hole Injection Layer for High Performance Quantum Dot Light-Emitting Diode

2021 ◽  
pp. 160303
Author(s):  
Seung-Gyun Choi ◽  
Hae-Jun Seok ◽  
Seunghyun Rhee ◽  
Donghyo Hahm ◽  
Wan Ki Bae ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diode ◽  
Hole Injection ◽  
Light Emitting ◽  
Hole Injection Layer

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

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