Surface localized exciton emission from undoped SnO2 nanocrystal films

2010 ◽  
Vol 97 (22) ◽  
pp. 221105 ◽  
Author(s):  
S. S. Pan ◽  
Y. H. Tian ◽  
Y. Y. Luo ◽  
Y. X. Zhang ◽  
S. Wang ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Undoped Sno2 ◽  
Nanocrystal Films

scholarly journals Dimension control of in situ fabricated CsPbClBr2 nanocrystal films toward efficient blue light-emitting diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Chenhui Wang ◽  
Dengbao Han ◽  
Junhui Wang ◽  
Yingguo Yang ◽  
Xinyue Liu ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Emitting Diodes ◽  
Blue Emission ◽  
Light Emitting ◽  
Mixed Ligands ◽  
Dimension Control ◽  
Nanocrystal Films ◽  
Width Distribution ◽  
Quantum Well Width

AbstractIn the field of perovskite light-emitting diodes (PeLEDs), the performance of blue emissive electroluminescence devices lags behind the other counterparts due to the lack of fabrication methodology. Herein, we demonstrate the in situ fabrication of CsPbClBr2 nanocrystal films by using mixed ligands of 2-phenylethanamine bromide (PEABr) and 3,3-diphenylpropylamine bromide (DPPABr). PEABr dominates the formation of quasi-two-dimensional perovskites with small-n domains, while DPPABr induces the formation of large-n domains. Strong blue emission at 470 nm with a photoluminescence quantum yield up to 60% was obtained by mixing the two ligands due to the formation of a narrower quantum-well width distribution. Based on such films, efficient blue PeLEDs with a maximum external quantum efficiency of 8.8% were achieved at 473 nm. Furthermore, we illustrate that the use of dual-ligand with respective tendency of forming small-n and large-n domains is a versatile strategy to achieve narrow quantum-well width distribution for photoluminescence enhancement.

Nanoscale Disorder Generates Subdiffusive Heat Transport in Self-Assembled Nanocrystal Films

Nano Letters ◽  
2021 ◽  
Author(s):  
James K. Utterback ◽  
Aditya Sood ◽  
Igor Coropceanu ◽  
Burak Guzelturk ◽  
Dmitri V. Talapin ◽  
...  
Keyword(s):  
Heat Transport ◽  
Nanocrystal Films ◽  
Self Assembled

Directional Modulation of Exciton Emission Using Single Dielectric Nanospheres

2021 ◽  
pp. 2007236
Author(s):  
Jie Fang ◽  
Mingsong Wang ◽  
Kan Yao ◽  
Tianyi Zhang ◽  
Alex Krasnok ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Directional Modulation

scholarly journals Intense Dark Exciton Emission from Strongly Quantum-Confined CsPbBr3 Nanocrystals

Nano Letters ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 7321-7326
Author(s):  
Daniel Rossi ◽  
Xiaohan Liu ◽  
Yangjin Lee ◽  
Mohit Khurana ◽  
Joseph Puthenpurayil ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Quantum Confined ◽  
Dark Exciton

Anthracene fluorescence at low temperatures. I. Purified single crystals

1972 ◽  
Vol 25 (7) ◽  
pp. 1411 ◽  
Author(s):  
LE Lyons ◽  
LJ Warren
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
Fluorescence Spectrum ◽  
Low Temperatures ◽  
Free Exciton ◽  
Deformation Bands ◽  
Exciton Emission ◽  
Polarized Emission ◽  
Impurity Bands ◽  
Phonon Structure

The low-temperature fluorescence spectrum of purified vapour-grown anthracene single crystals is presented and the free-exciton emission distinguished from a number of defect or impurity bands present even in the purest crystals. In assigning the observed bands the symmetry of the active vibrations and the origin of background fluorescence and deformation bands are discussed. The phonon structure in the region of the fluorescence origin was found to be almost completely b-polarized. Emission of electronic origin (25103 cm-1) was too weak to be observed. Polarization ratios of the principal vibronio bands at 5.6 K are given.

Exciton emission in PTCDA thin films under uniaxial pressure

2008 ◽  
Vol 77 (11) ◽  
Author(s):  
V. R. Gangilenka ◽  
A. DeSilva ◽  
H. P. Wagner ◽  
R. E. Tallman ◽  
B. A. Weinstein ◽  
...  
Keyword(s):  
Thin Films ◽  
Uniaxial Pressure ◽  
Exciton Emission

Near-field exciton imaging of chemically treated MoS2 monolayers

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8851-8858 ◽  
Author(s):  
Youngbum Kim ◽  
Yongjun Lee ◽  
Hyun Kim ◽  
Shrawan Roy ◽  
Jeongyong Kim
Keyword(s):  
Near Field ◽  
Exciton Emission ◽  
Chemical Treatments ◽  
Near Field Imaging ◽  
Chemically Treated ◽  
Mos2 Monolayers ◽  
Field Imaging

Modification of local exciton emission in monolayer MoS2 by chemical treatments is spatially uneven as revealed by near field imaging.

White light-emitting diode coated with ZnSe:Mn/ZnSe nanocrystal films enveloped by SiO_2

2011 ◽  
Vol 50 (31) ◽  
pp. G137 ◽  
Author(s):  
Boping Yang ◽  
Jiayu Zhang ◽  
Yiping Cui ◽  
Kai Wang
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Nanocrystal Films
Sign in / Sign up

Export Citation Format

Share Document