Novel perovskite quantum dots and hydroxyapatite nanocomposites: Enhanced thermal stability, improved emission intensity, and color-tunable luminescence

2020 ◽  
pp. 157989
Author(s):  
Yaxian Lu ◽  
Guang Jia ◽  
Guojing Wang ◽  
Jianru Wang ◽  
Xiao Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Emission Intensity ◽  
Color Tunable ◽  
Perovskite Quantum Dots

scholarly journals Light Down-Converter Based on Luminescent Nanofibers from the Blending of Conjugated Rod-Coil Block Copolymers and Perovskite through Electrospinning

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 84 ◽  
Author(s):  
Dai-Hua Jiang ◽  
Saburo Kobayashi ◽  
Chih-Chun Jao ◽  
Yoshinobu Mato ◽  
Takuya Isono ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Butyl Acrylate ◽  
Click Reaction ◽  
Soft Segment ◽  
Composite Fibers ◽  
Color Tunable ◽  
Perovskite Quantum Dots ◽  
Novel Strategy

We demonstrated a novel strategy for the preparation of light down-converter by combining rod-coil block copolymers with perovskite quantum dots (QDs) through electrospinning. Reports have shown that polymer deformability can be enhanced by incorporating a soft segment and controlled by varying the rod/coil ratio. Therefore, we first synthesized the rod-coil block copolymer through the click reaction of polyfluorene (PF) and poly(n-butyl acrylate) (PBA). Next, the CsPbBr3@PF8k-b-PBA12k composite fibers were fabricated by blending perovskite through electrospinning. Optical spectral evidence demonstrated the success of the strategy, as light down-converters were prepared through the controlled variance of QD/polymer ratios to achieve tunable color and stretchability. This result reveals the potential of using rod-coil block copolymers to fabricate color-tunable perovskite light down-converters.

Strong upconversion emission in CsPbBr3 perovskite quantum dots through efficient BaYF5:Yb,Ln sensitization

2019 ◽  
Vol 7 (7) ◽  
pp. 2014-2021 ◽  
Author(s):  
Min Zeng ◽  
Shalini Singh ◽  
Zeger Hens ◽  
Jing Liu ◽  
Flavia Artizzu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Emission Intensity ◽  
Upconversion Emission ◽  
Upconversion Nanoparticles ◽  
Perovskite Quantum Dots ◽  
Growth Method ◽  
Intense Emission ◽  
Sensitization Efficiency

An in situ growth method was proved to realize full sensitization efficiency of all-inorganic CsPbBr3 perovskite quantum dots from lanthanide-based upconversion nanoparticles, leading to intense emission intensity.

Enhanced thermal stability and emission intensity of InAs quantum dots covered by an InGaAsSb strain-reducing layer

2006 ◽  
Vol 89 (24) ◽  
pp. 243103 ◽  
Author(s):  
Wei-Sheng Liu ◽  
David M. T. Kuo ◽  
Jen-Inn Chyi ◽  
Wen-Yen Chen ◽  
Hsing-Szu Chang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Emission Intensity ◽  
Inas Quantum Dots

scholarly journals Thermal Stability of CsPbBr3 Perovskite Quantum Dots Assembled with SBA-15

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 953
Author(s):  
Hongyu Chen ◽  
Yunfei Wang ◽  
Jianing Wang ◽  
Wenyan Liu
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Red Shift ◽  
Heating And Cooling ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Pl Intensity ◽  
The Stability ◽  
Increasing Temperature ◽  
Thermal Stability Of

Nowadays, the excellent performance of metal halide perovskite quantum dots (PQDs) has been demonstrated, but the stability is still a perplexing issue. In this paper, the CsPbBr3 QDs were assembled into SBA-15 for the first time. The thermal stability and photoluminescence (PL) intensity of SBA-15@CsPbBr3 QDs were improved. The PL spectra of pure CsPbBr3 QDs have red-shift (~6 nm) with the increasing temperature. However, that of SBA-15@CsPbBr3 QDs have almost no red-shift. The PL intensity of SBA-15@CsPbBr3 QDs decreased slightly after heating and cooling for several times. By comparison, the PL intensity of pure CsPbBr3 QDs decreased more significantly. The experimental results showed that SBA-15 played a significant role in improving the thermal stability of PQDs, which will have an excellent potential for the application of PQDs in the future.

Surface Treatment of Mixed-Halide CsPb(BrxI1-x)3 Perovskite Quantum Dots for Thermal Stability Enhancement

2021 ◽  
pp. 111622
Author(s):  
Kim Anh Huynh ◽  
Tuan Van Nguyen ◽  
Sa-Rang Bae ◽  
Huu Ha Do ◽  
Do Yeon Heo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Surface Treatment ◽  
Perovskite Quantum Dots ◽  
Stability Enhancement

Ultralow-Threshold and Color-Tunable Continuous-Wave Lasing at Room-Temperature from In Situ Fabricated Perovskite Quantum Dots

2019 ◽  
Vol 10 (12) ◽  
pp. 3248-3253 ◽  
Author(s):  
Lei Wang ◽  
Linghai Meng ◽  
Lan Chen ◽  
Sheng Huang ◽  
Xiangang Wu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Continuous Wave ◽  
Color Tunable ◽  
Perovskite Quantum Dots

Formation of highly luminescent cesium bismuth halide perovskite quantum dots tuned by anion exchange

2018 ◽  
Vol 54 (30) ◽  
pp. 3779-3782 ◽  
Author(s):  
Yongbing Lou ◽  
Mengying Fang ◽  
Jinxi Chen ◽  
Yixin Zhao
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Wavelength Range ◽  
Quantum Yields ◽  
Excellent Thermal Stability ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Anion Exchange Reaction

Cs3Bi2Br9 quantum dots, with excellent thermal stability and photoluminescence quantum yields of up to 22%, have been prepared. A PL wavelength range from 380 to 526 nm could be achieved through a fast reversible anion exchange reaction.

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