NDLI: Fabrication of wafer-scale TiO<sub>2</sub> nanobowl arrays <i>via</i> a scooping transfer of polystyrene nanospheres and atomic layer deposition for their application in photonic crystals

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Fabrication of wafer-scale TiO₂ nanobowl arrays via a scooping transfer of polystyrene nanospheres and atomic layer deposition for their application in photonic crystals

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Journal of Materials Chemistry C Vol - 1 Issue - 8

Journal of Materials Chemistry C Vol - 1 Issue - 7

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Fabrication of wafer-scale TiO₂ nanobowl arrays via a scooping transfer of polystyrene nanospheres and atomic layer deposition for their application in photonic crystals

Content Provider	Royal Society of Chemistry (RSC)
Author	Yoon, Seong Woong Park, Hoo Keun Do, Young Rag Choi, Da Yeon
Copyright Year	2013
Abstract	In this study, wafer-scale triangularly patterned two-dimensional (2D) TiO2 nanobowl structures were fabricated on 4 in. glass and polyethylene terephthalate (PET) substrates using a combination of two simple processes: (1) the fabrication of self-assembled arrays of polystyrene (PS) nanospheres based on a scooping transfer technique and (2) atomic layer deposition (ALD). To demonstrate the effectiveness of the TiO2 nanobowl as a photonic crystal layer (PCL), we investigated the optical properties of a 2D TiO2 nanobowl-assisted Y3Al5O12:Ce3+ (YAG:Ce) ceramic plate phosphor (CPP)-capped white LED by changing the bowl sizes, the number of bowl layers, and the shell thickness. Using an optimized 2D TiO2 nanobowl PCL (580 nm lattice constant, one layer, and a shell thickness of 58 nm), the luminous efficacy was improved by a factor of 1.54 compared to that of a conventional CPP-capped white LED. The 2D TiO2 nanobowl structures fabricated on a large scale and with various substrates may find potential application in optical, electronic, and biological devices.
Starting Page	1732
Ending Page	1738
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	1
Issue Number	9
Journal	Journal of Materials Chemistry C
DOI	10.1039/c2tc00652a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Polyethylene terephthalate Polystyrene Atomic layer deposition Photonic crystal Lattice constant Luminous efficacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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