All-inorganic perovskite quantum dots-based electrospun polyacrylonitrile fiber for ultra-sensitive trace-recording

2021 ◽  
Author(s):  
Yanyan Li ◽  
Lifan Shen ◽  
E.Y.B. Pun ◽  
Hai Lin
Keyword(s):  
Quantum Dots ◽  
Laser Excitation ◽  
Green Emission ◽  
Polyacrylonitrile Fiber ◽  
Enhanced Fluorescence ◽  
Electrospinning Technique ◽  
Band Emission ◽  
Pan Fiber ◽  
Perovskite Quantum Dots ◽  
Biological Protection

Abstract All-inorganic dual-phase CsPbBr3-Cs4PbBr6 quantum dots (CPB QDs)-based polyacrylonitrile (PAN) fiber synthesized by supersaturated recrystallization and electrospinning technique possesses characteristics of homogeneous morphology, high crystallinity and solution sensitivity. Under 365 nm laser excitation, CPB@PAN fiber exhibits surprising trace-recording capability attributing to the splash-enhanced fluorescence (FL) performance with a narrow-band emission at 477-515 nm. In the process of ethanol-anhydrous (EA) and water splashing, the CPB@PAN fiber presents conspicuous blue and green emission when contacting with EA and water, and maintains intense blue and green FL for more than 4 months. These experimental and theoretical findings provide a facile technology for the development of biological protection display, biotic detection and moisture-proof forewarning based on the trace-recording performance of CPB@PAN fiber.

Ni2+ and Pr3+ co-doped CsPbCl3 Perovskite Quantum Dots with Efficient Infrared Emission at 1300 nm

Nanoscale ◽  
2021 ◽  
Author(s):  
Jiekai Lv ◽  
Biao Dong ◽  
Gencai Pan ◽  
Liheng Sun ◽  
Xue Bai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Narrow Band ◽  
Infrared Emission ◽  
Band Emission ◽  
Light Region ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Co Doped

Lead halide perovskite quantum dots (PQDs) show great prospects in the field of optoelectronic applications. Although it has high efficiency and narrow-band emission performance in the visible light region, the...

Perovskite Quantum Dots: Opportunities and Challenges

2020 ◽  
Vol 41 (8) ◽  
pp. 940-944
Author(s):  
ZENG Hai-bo ◽  
◽  
DONG Yu-hui ◽  
Keyword(s):  
Quantum Dots ◽  
Perovskite Quantum Dots

scholarly journals Achieving Optical Gain of the CsPbBr3 Perovskite Quantum Dots and Influence of the Variable Stripe Length Method

ACS Omega ◽  
2021 ◽  
Author(s):  
Saif M. H. Qaid ◽  
Hamid M. Ghaithan ◽  
Bandar Ali Al-Asbahi ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Quantum Dots ◽  
Optical Gain ◽  
Perovskite Quantum Dots ◽  
Stripe Length

Armor-Like Passivated CsPbBr3 Quantum Dots: Boosted Stability with Hand-in-Hand Ligands and Enhanced Performance of Nuclear Battery

2021 ◽  
Author(s):  
Haibo Zeng ◽  
Dandan Yang ◽  
Zhiheng Xu ◽  
Chunhui Gong ◽  
Xiaoming Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Inorganic Perovskite ◽  
Surface Ligands ◽  
Perovskite Quantum Dots ◽  
Stability Issue ◽  
The Stability ◽  
Nuclear Battery ◽  
Cspbbr3 Quantum Dots

One of the main reasons for the stability issue of inorganic perovskite quantum dots (PQDs) is the fragile protection of surface ligands. Here, an armor-like passivation strategy is proposed to...

Ultra-stable water-dispersive perovskite QDs encapsulated by triple siloxane coupling agent system with different hydrophilic/ hydrophobic properties

2021 ◽  
Author(s):  
Bingfeng Shi ◽  
Jianhua Lv ◽  
Ying Liu ◽  
Yang Xiao ◽  
Changli Lü
Keyword(s):  
Quantum Dots ◽  
Coupling Agent ◽  
Polar Solvent ◽  
Hydrophobic Properties ◽  
Agent System ◽  
Environmental Tolerance ◽  
Perovskite Quantum Dots ◽  
Improve Stability

Driven by the instability of perovskite quantum dots (PQDs), different encapsulation techniques are used to improve stability of PQDs. However, further improvements in the extreme environmental tolerance and polar solvent...

Investigation of the Surface Passivation Effect on the Optical Properties of CsPbBr3 Perovskite Quantum Dots

2021 ◽  
Vol 23 ◽  
pp. 100948
Author(s):  
Saif M.H. Qaid ◽  
Hamid M. Ghaithan ◽  
Bandar Ali Al-Asbahi ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Passivation ◽  
Perovskite Quantum Dots
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