From Futile to Fruitful: Diesel Soot as White Light Emitter

The present work describes a solution for the effective use of the hazardous particulate matter (diesel soot) from the internal combustion engines (ICEs) as a potential material emitting white light for white light emitting diodes (WLEDs). The washed soot samples are subjected to Field Emission Scan...

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Bibliographic Details
Published in:Journal of fluorescence 2018-03, Vol.28 (2), p.543-549
Main Authors: Swapna, M. S., Sankararaman, S.
Format: Article
Language:English
Subjects:
Analytical Chemistry
ATOMIC AND MOLECULAR PHYSICS
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Color temperature
Correlation analysis
Diesel engines
Diodes
Emitters
Emitters (electron)
Energy transmission
FIELD EMISSION
Field emission microscopy
FLUORESCENCE
Hazardous materials
INTERNAL COMBUSTION ENGINES
Light
Light emission
LIGHT EMITTING DIODES
Microscopy
Organic light emitting diodes
Original Article
Particulate emissions
Photoexcitation
PHOTOLUMINESCENCE
Photonics
Public transportation
Rare earth elements
SCANNING ELECTRON MICROSCOPY
Soot
SPECTROSCOPY
Spectrum analysis
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE RADIATION
White light
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Summary:The present work describes a solution for the effective use of the hazardous particulate matter (diesel soot) from the internal combustion engines (ICEs) as a potential material emitting white light for white light emitting diodes (WLEDs). The washed soot samples are subjected to Field Emission Scanning Electron Microscopy (FESEM), High- Resolution Transmission Electron Microscopy (HR-TEM), Energy Dispersive Spectroscopy (EDS), UV–Visible, Photoluminescent (PL) Spectroscopy and quantum yield measurements. The CIE plot and Correlated Color Temperature (CCT) reveals the white fluorescence on photoexcitation. The sample on ultraviolet (UV) laser excitation, provides a visual confirmation of white light emission from the sample. The diesel soot collected from public transport buses of different years of manufacture invariably exhibit white fluorescence at an excitation of 350 nm. The sample show a quantum yield of 47.09%. The study is significant in the context of pollution and search for low-cost, rare-earth phosphor free material for white light emission and thereby turning the hazardous, futile material into a fruitful material that can be used for potential applications in photonics and electronics.
ISSN:1053-0509
1573-4994
1573-4994
DOI:10.1007/s10895-018-2215-6