Poly(Vinylidene Fluoride)-Passivated CsPbBr3 Perovskite Quantum Dots with Near-Unity Photoluminescence Quantum Yield and Superior Stability

2021 ◽  
Author(s):  
Lin Yang ◽  
Bowen Fu ◽  
Xu Li ◽  
Hao Chen ◽  
Lili Li
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Vinylidene Fluoride ◽  
Excellent Performance ◽  
Inorganic Perovskite ◽  
Photoluminescence Quantum Yield ◽  
Poly Vinylidene Fluoride ◽  
Perovskite Quantum Dots ◽  
Optoelectronic Applications ◽  
Pl Quenching

All inorganic perovskite quantum dots (QDs) have received great attention owing to their excellent performance in optoelectronic applications. However, they often suffer from the defect-related photoluminescence (PL) quenching and phase...

scholarly journals Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr3 Perovskite Quantum Dots by Trivalent Doping

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 710 ◽  
Author(s):  
Sujeong Jung ◽  
Jae Ho Kim ◽  
Jin Woo Choi ◽  
Jae-Wook Kang ◽  
Sung-Ho Jin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Emission Peak ◽  
Trivalent Metal ◽  
Photoluminescence Quantum Yield ◽  
Theoretical Investigations ◽  
Perovskite Quantum Dots ◽  
Substitutional Defects ◽  
Pl Emission ◽  
Metal Doped

We determine the influence of substitutional defects on perovskite quantum dots through experimental and theoretical investigations. Substitutional defects were introduced by trivalent dopants (In, Sb, and Bi) in CsPbBr3 by ligand-assisted reprecipitation. We show that the photoluminescence (PL) emission peak shifts toward shorter wavelengths when doping concentrations are increased. Trivalent metal-doped CsPbBr3 enhanced the PL quantum yield (~10%) and air stability (over 10 days). Our findings provide new insights into the influence of substitutional defects on substituted CsPbBr3 that underpin their physical properties.

Effective blue-violet photoluminescence through lanthanum and fluorine ions co-doping for CsPbCl3 perovskite quantum dots

Nanoscale ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 2484-2491 ◽  
Author(s):  
Yue Zhai ◽  
Xue Bai ◽  
Gencai Pan ◽  
Jinyang Zhu ◽  
He Shao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Quantum Yield ◽  
Feasible Method ◽  
Co Doping ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots ◽  
Fluorine Ions

Co-doping of cation (La3+) and anion (F−) ions is a feasible method to improve the optical properties of CsPbCl3 QDs, and high photoluminescence quantum yield of 36.5% is achieved in CsPb(Cl0.7F0.3)3:La3+ QDs.

scholarly journals Lead-free, stable, high-efficiency (52%) blue luminescent FA3Bi2Br9 perovskite quantum dots

2020 ◽  
Vol 5 (3) ◽  
pp. 580-585 ◽  
Author(s):  
Yalong Shen ◽  
Jun Yin ◽  
Bo Cai ◽  
Ziming Wang ◽  
Yuhang Dong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Room Temperature ◽  
High Efficiency ◽  
Blue Emission ◽  
Lead Free ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots ◽  
First Time

Lead-free Bi-based perovskite FA3Bi2X9 (X = Cl, Br, and I) quantum dots (QDs) are synthesized for the first time at room temperature. The ligand-passivated FA3Bi2Br9 QDs exhibit blue emission at 437 nm with photoluminescence quantum yield (PLQY) up to 52%.

Polysalt ligands achieve higher quantum yield and improved colloidal stability for CsPbBr3 quantum dots

Nanoscale ◽  
2021 ◽  
Author(s):  
Sisi Wang ◽  
Liang Du ◽  
Selin Donmez ◽  
Yan Xin ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Colloidal Stability ◽  
Semiconductor Nanocrystals ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Colloidal Lead ◽  
Optoelectronic Applications ◽  
Cspbbr3 Quantum Dots ◽  
Lead Halide

Colloidal lead halide perovskite quantum dots (PQDs) are relatively new semiconductor nanocrystals with great potential for use in optoelectronic applications.

Highly Luminescent Phase-Stable CsPbI3 Perovskite Quantum Dots Achieving Near 100% Absolute Photoluminescence Quantum Yield

ACS Nano ◽  
2017 ◽  
Vol 11 (10) ◽  
pp. 10373-10383 ◽  
Author(s):  
Feng Liu ◽  
Yaohong Zhang ◽  
Chao Ding ◽  
Syuusuke Kobayashi ◽  
Takuya Izuishi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots

Room-Temperature Construction of Mixed-Halide Perovskite Quantum Dots with High Photoluminescence Quantum Yield

2018 ◽  
Vol 122 (9) ◽  
pp. 5151-5160 ◽  
Author(s):  
Chenghao Bi ◽  
Shixun Wang ◽  
Wen Wen ◽  
Jifeng Yuan ◽  
Guozhong Cao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Room Temperature ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite

Considerably enhanced exciton emission of CsPbCl3 perovskite quantum dots by the introduction of potassium and lanthanide ions

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14067-14072 ◽  
Author(s):  
Yanan Liu ◽  
Gencai Pan ◽  
Rong Wang ◽  
He Shao ◽  
He Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Lanthanide Ions ◽  
Violet Emission ◽  
Exciton Emission ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots

The photoluminescence quantum yield (PLQY) of blue-violet emission for CsPbCl3 quantum dots (QDs) is still low, which has limited its application in multi-colour displays.

Enhancing the light-emitting performance and stability in CsPbBr3 perovskite quantum dots via simultaneous doping and surface passivation

2020 ◽  
Vol 8 (41) ◽  
pp. 14439-14445 ◽  
Author(s):  
Hengxiang Yang ◽  
Wenxu Yin ◽  
Wei Dong ◽  
Long Gao ◽  
Ching-Hong Tan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Passivation ◽  
Color Purity ◽  
Promising Candidate ◽  
Light Emitting ◽  
Inorganic Perovskite ◽  
Perovskite Quantum Dots ◽  
Optoelectronic Applications ◽  
Simultaneous Doping ◽  
Narrow Emission

Inorganic perovskite CsPbBr3 quantum dots (QDs) have emerged as a promising candidate for optoelectronic applications due to their narrow emission and color purity, among other things.

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