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.

Role of Cation-Anion Organic Ligands for Optical Properties of Fully Inorganic Perovskite Quantum Dots

MRS Advances ◽  
2018 ◽  
Vol 3 (55) ◽  
pp. 3255-3261 ◽  
Author(s):  
Aaron Forde ◽  
Talgat Inerbaev ◽  
Dmitri Kilin
Keyword(s):  
Quantum Dots ◽  
Surface Passivation ◽  
Binding Energies ◽  
Organic Ligands ◽  
Trap States ◽  
Light Emitting ◽  
Inorganic Perovskite ◽  
Perovskite Quantum Dots ◽  
Reasonable Choice

ABSTRACTApplication of lead-halide perovskite nanostructures for photovoltaic and light emitting applications depends on fashion of the surface termination. The reasonable choice of surface ligands for perovskite nanostructures prevent formation of trap states and contribute to chemical stability, wide opening of the bandgap, and intensity of absorption and photoluminescence of perovskite nanostructures. This work provides atomistic arguments for dual ligand protocol of surface passivation of fully inorganic perovskite quantum dots with fully organic ligands being a mix of cations (ethyl-ammonium) and anions (acetic) in nearly equal proportions. Computed binding energies of either individual ligands or anion-cation pairs demonstrate high stability in comparison to thermal energy and are concluded to be favourable choice in synthesis of colloidal perovskite quantum dots for light emitting applications.

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...

All-Inorganic Perovskite Quantum Dots/p-Si Heterojunction Light-Emitting Diodes under DC and AC Driving Modes

2017 ◽  
Vol 6 (2) ◽  
pp. 1700897 ◽  
Author(s):  
Jingjing Liu ◽  
Xuexi Sheng ◽  
Yangqing Wu ◽  
Dongke Li ◽  
Jianchun Bao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Inorganic Perovskite ◽  
Perovskite Quantum Dots
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