Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9140
Title: Perylene-embedded electrospun PS fibers for white light generation
Authors: Güner, Tuğrul
Aksoy, Erkan
Demir, Mustafa Muammer
Varlıklı, Canan
Güner, Tuğrul
Demir, Mustafa Muammer
Varlıklı, Canan
Keywords: Perylene diimide
Solid state emission
Polystyrene fiber
Frequency down-conversion
Aggregation
Issue Date: 2019
Publisher: Elsevier Ltd.
Abstract: Perylene dyes have been employed in the fabrication of white light due to their superior photophysical properties and relatively easy synthetic methods. However, their molecular aggregation in solid state is one of the main handicaps since it causes deviation in their optical properties and quenches photoluminescence quantum yields (Phi(f)). Investigation of the photophysical properties of a green (PTE), a yellow (PDI) and a new red (DiPhAPDI) emitting perylene derivative in solution, drop-casted films, polystyrene (PS) fibers and PS fibers embedded in poly (dimethyl siloxane) (PDMS) showed that PS:dye fibers prevent aggregation to some extend and allows high Of of dyes. The Of values of PTE, PDI and DiPhAPDI were all higher than 93.0% in solution and 84.8%, 94.3% and 73.6%, respectively in PS:dye fibers. Embedding the fibers in PDMS improved the photostabilities of the dyes two folds compared to their solution phases. The prepared dye containing fibers were combined together into a single PDMS film and utilized as a frequency conversion layer on a blue LED. Fabricated samples were found to show high color rendering index (>= 90), adjustable CCT (7500 K-5000 K), and power efficiency values exceeding 2001m/W depending on the used fiber amount in mass.
URI: https://doi.org/10.1016/j.dyepig.2018.08.040
https://hdl.handle.net/11147/9140
ISSN: 0143-7208
1873-3743
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Photonics / Fotonik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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