An interpretation of a mysterious 3.0- to 4.6-kHz emission band observed on Voyager 2 near Neptune

Abstract：Gd2GaSbO7:Cr3+,Yb3+ phosphors with efficient broadband NIR emission were prepared by solid-state reaction. Under the excitation of 448 nm, Gd2GaSbO7:Cr3+ (GGS:Cr3+) phosphor exhibits a broadband NIR emission band centered at approximately...

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High Pressure Studies of Quantum Well Emission and Deep Emission in GaInP(ordered)-GaAs Heterostructures

MRS Proceedings ◽

10.1557/proc-499-195 ◽

1997 ◽

Vol 499 ◽

Author(s):

S. H. Kwok ◽

P. Y. Yu ◽

K. Uchida ◽

T. Arai

Keyword(s):

High Pressure ◽

Quantum Well ◽

Emission Band ◽

Excitation Power ◽

High Excitation ◽

High Pressure Studies ◽

Band Alignments ◽

High Pressure Study

ABSTRACTWe report on a high pressure study of emission from a series of GaInP(ordered)/GaAs heterostructures. A so-called “deep emission” band at 1.46 eV is observed in all our samples. At high excitation power, quantum well emission emerges in only one structure where thin GaP layers are inserted on both sides of the GaAs well. From the pressure dependent emission in this sample we have determined its band alignments. The role of the GaP layers in suppressing the deep emission is elucidated.

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Heliosheath Properties Measured from a Voyager 2 to Voyager 1 Transient

The Astrophysical Journal ◽

10.3847/1538-4357/ab3d9d ◽

2019 ◽

Vol 883 (1) ◽

pp. 101 ◽

Cited By ~ 5

Author(s):

J. S. Rankin ◽

D. J. McComas ◽

J. D. Richardson ◽

N. A. Schwadron

Keyword(s):

Voyager 2

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Two-Photon Excited Ultraviolet Photoluminescence of Zinc Oxide Nanorods

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.263 ◽

2008 ◽

Vol 8 (11) ◽

pp. 5854-5857 ◽

Cited By ~ 11

Author(s):

Guangping Zhu ◽

Chunxiang Xu ◽

Jing Zhu ◽

Changgui Lu ◽

Yiping Cui ◽

...

Keyword(s):

Zinc Oxide ◽

Emission Band ◽

Single Photon ◽

Zno Nanorods ◽

Zinc Oxide Nanorods ◽

Excitation Wavelength ◽

Photoluminescence Intensity ◽

Vapor Phase Transport ◽

Two Photon ◽

Oxide Nanorods

High density zinc oxide nanorods with uniform size were synthesized on (100) silicon substrate by vapor-phase transport method. The scanning electron microscopy images reveal that the nanorods have an average diameter of about 400 nm. The X-ray diffraction pattern demonstrates the wurtzite crystalline structure of the ZnO nanorods growing along [0001] direction. The single-photon excited photoluminescence presents a strong ultraviolet emission band at 394 nm and a weak visible emission band at 600 nm. When the ZnO nanorods were respectively pumped by various wavelength lasers from 520 nm to 700 nm, two-photon excited ultraviolet photoluminescence was observed. The dependence of the two-photon excited photoluminescence intensity on the excitation wavelength and power was investigated in detail.

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Indenopyrans – synthesis and photoluminescence properties

Beilstein Journal of Organic Chemistry ◽

10.3762/bjoc.12.81 ◽

2016 ◽

Vol 12 ◽

pp. 825-834 ◽

Cited By ~ 2

Author(s):

Andreea Petronela Diac ◽

Ana-Maria Ţepeş ◽

Albert Soran ◽

Ion Grosu ◽

Anamaria Terec ◽

...

Keyword(s):

Solid State ◽

Emission Band ◽

Fluorescence Spectra ◽

Photophysical Properties ◽

Quantum Yields ◽

Band Broadening ◽

Photoluminescence Properties ◽

Fluorescence Quantum Yields ◽

Blue Emitters ◽

Solid State Fluorescence

New indeno[1,2-c]pyran-3-ones bearing different substituents at the pyran moiety were synthesized and their photophysical properties were investigated. In solution all compounds were found to be blue emitters and the trans isomers exhibited significantly higher fluorescence quantum yields (relative to 9,10-diphenylanthracene) as compared to the corresponding cis isomers. The solid-state fluorescence spectra revealed an important red shift of λmax due to intermolecular interactions in the lattice, along with an emission-band broadening, as compared to the solution fluorescence spectra.

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