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나노 구조 물리 연구단
나노구조물리 연구단
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Hierarchically Structured ZnO/Petal Hybrid Composites with Tuned Optoelectronic and Mechanical Properties

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Title
Hierarchically Structured ZnO/Petal Hybrid Composites with Tuned Optoelectronic and Mechanical Properties
Author(s)
Park, C; So, HM; Hyeon Jun Jeong; Mun Seok Jeong; Pippel, E; Chang, WS; Lee, SM
Publication Date
2014-09
Journal
ACS APPLIED MATERIALS & INTERFACES, v.6, no.18, pp.16243 - 16248
Publisher
AMER CHEMICAL SOC
Abstract
Impressive biophotonic functions of flora in Mother Nature are often attributed to the optical diffraction occurring on hierarchically structured surfaces. The petals, displaying vivid colors, have diverse surface structures. The shapes of those structures alter significantly depending on the part of the petal, and they adjust the intensity of the reflected color and the light absorbance. Here, we added semiconducting properties to those intriguing optical functions arising from the unique surface structures. By means of atomic layer deposition (ALD), we conformally deposited a ZnO layer on the yellow rose petal, which has hierarchical surface structures and exhibits peculiar light absorbance behaviors. The resulting ZnO/petal composites revealed unique optoelectronic characteristics by synergetic effects between the biophotonic structures and inherent semiconducting properties. From several control experiments, we identified that the biophotonic hierarchical structures give rise to strong modulation of the light absorbance. We found that ZnO/petal exhibits superior mechanical stability to the raw petal likely due to the Zn infiltration into the petal. The design inspired by floral creatures with photonic structures and manufactured in the form of composite with mechanical stability and distinctive optoelectronic properties is believed to offer a new paradigm for the preparation of bioinspired photonic devices.
URI
https://pr.ibs.re.kr/handle/8788114/904
ISSN
1944-8244
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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