White light emission from polystyrene under pulsed ultra violet laser irradiation

Title
White light emission from polystyrene under pulsed ultra violet laser irradiation
Authors
김은겸김지훈김정혁이기용고두현한일기고형덕
Keywords
Lasers; LEDs and light sources; Optical materials and structures
Issue Date
2013-11
Publisher
Scientific Reports
Citation
VOL 3, 3253-1-3253-4
Abstract
This paper reports for the first time the luminescent property of polystyrene (PS), produced by pulsed ultra violet laser irradiation. We have discovered that, in air, ultra-violet (UV) irradiated PS nanospheres emit bright white light with the dominant peak at 510 nm, while in vacuum they emit in the near-blue region. From the comparison of PS nanospheres irradiated in vacuum and air, we suggest that the white luminescence is due to the formation of carbonyl groups on the surface of PS by photochemical oxidation. Our results potentially offer a new route and strategy for white light sources.
URI
http://pubs.kist.re.kr/handle/201004/46684
ISSN
20452322
Appears in Collections:
KIST Publication > Article
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