scholarly journals Thermomechanically Controlled Fluorescence Anisotropy in Thin Films of InP/ZnS Quantum Dots

2021 ◽  
Author(s):  
Sylwia Parzyszek ◽  
Damian Pociecha ◽  
Joanna Maria Wolska ◽  
Wiktor Lewandowski
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Fluorescence Anisotropy ◽  
Polarized Light ◽  
Macroscopic Scale ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Macro Scale

Macroscopic scale sources of polarized light play a fundamental role in designing light-emitting devices. In this communication we report the formation of nano- and macro-scale ordered, layered assemblies of InP/ZnS...

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...

Blue and green double band luminescent carbon quantum dots: Synthesis, origin of photoluminescence, and application in white light-emitting devices

2021 ◽  
Vol 118 (15) ◽  
pp. 153102
Author(s):  
Xifang Chen ◽  
Wenhui Wu ◽  
Wenxia Zhang ◽  
Ziye Wang ◽  
Zhenjin Fu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
Light Emitting Devices

Light emitting devices from organic charge transfer adduct thin films

1999 ◽  
Vol 40 (6) ◽  
pp. 285-293 ◽  
Author(s):  
Poopathy Kathirgamanathan ◽  
Vijendra Kandappu ◽  
Susumu Hara ◽  
Kanagarajah Chandrakumar ◽  
S.Leo Marianesan ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Transfer ◽  
Light Emitting ◽  
Light Emitting Devices

High-efficiency, deep blue ZnCdS/CdxZn1−xS/ZnS quantum-dot-light-emitting devices with an EQE exceeding 18%

Nanoscale ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 5650-5657 ◽  
Author(s):  
Ouyang Wang ◽  
Lei Wang ◽  
Zhaohan Li ◽  
Qiulei Xu ◽  
Qingli Lin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Deep Blue

18% peak external quantum efficiency (EQE) for deep blue QLEDs by using ZnCdS/CdxZn1−xS/ZnS quantum dots.

scholarly journals Bright Alloy CdZnSe/ZnSe QDs with Nonquenching Photoluminescence at High Temperature and Their Application to Light-Emitting Diodes

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Tingting Zhang ◽  
Xugu Zhang ◽  
Peizhi Yang ◽  
Jinke Bai ◽  
Chun Chang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Temperature ◽  
Quantum Yields ◽  
Excellent Performance ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Maximum Current Density ◽  
Luminescence Efficiency ◽  
Maximum Current ◽  
Pl Quenching

Stable luminance properties are essential for light-emitting devices with excellent performance. Thermal photoluminescence (PL) quenching of quantum dots (QDs) under a high temperature resulting from a surface hole or electron traps will lead to unstable and dim brightness. After treating CdZnSe/ZnSe QDs with TBP, which is a well-known passivation reagent of the anions, the excess Se sites on the surface of the QDs were removed and their PL quantum yields (QYs) was improved remarkable. Furthermore, after TBP treatment, the CdZnSe/ZnSe QDs exhibit no quenching phenomena even at a high temperature of 310°C. The electroluminescent light-mitting diodes based on the QDs with TBP treatment also demonstrated satisfied performance with a maximum current density of 1679.6 mA/cm2, a peak luminance of 89500 cd/m2, and the maximum values of EQE and luminescence efficiency are 15% and 14.9 cd/A, respectively. The performance of the fabricated devices can be further improved providing much more in-depth studies on the CdZnSe/ZnSe QDs.

Sign in / Sign up

Export Citation Format

Share Document