One-Step Preparation of Long-Term Stable and Flexible CsPbBr3 Perovskite Quantum Dots/Ethylene Vinyl Acetate Copolymer Composite Films for White Light-Emitting Diodes

2018 ◽  
Vol 10 (18) ◽  
pp. 15888-15894 ◽  
Author(s):  
Yang Li ◽  
Ying Lv ◽  
Ziquan Guo ◽  
Liubing Dong ◽  
Jianghui Zheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Composite Films ◽  
Ethylene Vinyl Acetate ◽  
Light Emitting ◽  
Perovskite Quantum Dots ◽  
One Step ◽  
White Light Emitting Diodes ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

scholarly journals Encapsulated Passivation of Perovskite Quantum Dot (CsPbBr3) Using a Hot-Melt Adhesive (EVA-TPR) for Enhanced Optical Stability and Efficiency

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 419
Author(s):  
Saradh Prasad ◽  
Mamduh J. Aljaafreh ◽  
Mohamad S. AlSalhi ◽  
Abeer Alshammari
Keyword(s):  
Quantum Dots ◽  
Band Gap ◽  
Surface Defects ◽  
Optoelectronic Devices ◽  
Ethylene Vinyl Acetate ◽  
Light Emitting ◽  
Optical Stability ◽  
Perovskite Quantum Dots ◽  
Polymer Light Emitting Diodes ◽  
Hot Melt

The notable photophysical characteristics of perovskite quantum dots (PQDs) (CsPbBr3) are suitable for optoelectronic devices. However, the performance of PQDs is unstable because of their surface defects. One way to address the instability is to passivate PQDs using different organic (polymers, oligomers, and dendrimers) or inorganic (ZnS, PbS) materials. In this study, we performed steady-state spectroscopic investigations to measure the photoluminescence (PL), absorption (A), transmission (T), and reflectance (R) of perovskite quantum dots (CsPbBr3) and ethylene vinyl acetate/terpene phenol (1%) (EVA-TPR (1%), or EVA) copolymer/perovskite composites in thin films with a thickness of 352 ± 5 nm. EVA is highly transparent because of its large band gap; furthermore, it is inexpensive and easy to process. However, the compatibility between PQDs and EVA should be established; therefore, a series of analyses was performed to compute parameters, such as the band gap, the coefficients of absorbance and extinction, the index of refractivity, and the dielectric constant (real and imaginary parts), from the data obtained from the above investigation. Finally, the optical conductivities of the films were studied. All these analyses showed that the EVA/PQDs were more efficient and stable both physically and optically. Hence, EVA/PQDs could become copolymer/perovskite active materials suitable for optoelectronic devices, such as solar cells and perovskite/polymer light-emitting diodes (PPLEDs).

scholarly journals Strongly-ligated perovskite quantum dots with precisely controlled dimensions and architectures for white light-emitting diodes

Nano Energy ◽  
2020 ◽  
Vol 77 ◽  
pp. 105043 ◽  
Author(s):  
Shuang Pan ◽  
Yihuang Chen ◽  
Zewei Wang ◽  
Yeu-Wei Harn ◽  
Jiwoo Yu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Quantum Dots ◽  
White Light Emitting Diodes

Ultrathin, Core–Shell Structured SiO 2 Coated Mn 2+ ‐Doped Perovskite Quantum Dots for Bright White Light‐Emitting Diodes

Small ◽  
2019 ◽  
Vol 15 (19) ◽  
pp. 1900484 ◽  
Author(s):  
Xiaosheng Tang ◽  
Weiwei Chen ◽  
Zhengzheng Liu ◽  
Juan Du ◽  
Zhiqiang Yao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Core Shell ◽  
Light Emitting ◽  
Perovskite Quantum Dots ◽  
Bright White Light ◽  
White Light Emitting Diodes

scholarly journals Novel ultra-stable and highly luminescent white light-emitting diodes from perovskite quantum dots—Polymer nanofibers through biaxial electrospinning

APL Materials ◽  
2019 ◽  
Vol 7 (11) ◽  
pp. 111105 ◽  
Author(s):  
Dai-Hua Jiang ◽  
Yi-Hsuan Tsai ◽  
Loganathan Veeramuthu ◽  
Fang-Cheng Liang ◽  
Lung-Chin Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Polymer Nanofibers ◽  
Light Emitting ◽  
Perovskite Quantum Dots ◽  
White Light Emitting Diodes
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