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학술지 Synthesis of Hexagonal ZnO Nanodrums, Nanosheets and Nanowires by the Ionic Effect During the Growth of Hexagonal ZnO Crystals
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저자
정미희, 주무정
발행일
201408
출처
Journal of Materials Chemistry C : Materials for Optical and Electronic Devices, v.2 no.32, pp.6675-6682
ISSN
2050-7526
출판사
Royal Society of Chemistry (RSC)
DOI
https://dx.doi.org/10.1039/c4tc01132e
협약과제
14ZC2100, 지능형 그린하우스 개발, 문애경
초록
A hexagonal ZnO crystal has six nonpolar (1010) prismatic faces that are capped by a polar Zn-terminated (0001) face or an O-terminated (0001) face. The growth of a certain surface can be impeded by additives which preferentially adsorb onto specific crystal surfaces. By adding nonionic surfactants, anions and cations to a hexagonal ZnO precursor solution, we can synthesize hexagonal ZnO nanodrums, nanosheets and nanowires. The ZnO nanodrums are produced with a nonionic surfactant which forms a lamellar micelle structure in the solution. Hexagonal ZnO nanosheets were produced in the solution containing anions, which inhibited crystal growth in the c-axis direction, whereas the cations accelerated the c-axis crystal growth to produce ZnO nanowires. Thus, we could control the ZnO shape by controlling the ionic effect in the hexagonal ZnO crystalline precursor solution. When the ZnO nanostructures were applied to the photovoltaic devices, the ZnO nanowire solar cell shows the highest cell performance, which is the ideal structure to improve the performance of the photovoltaic devices. This journal is © the Partner Organisations 2014.
KSP 제안 키워드
C-axis, Crystal growth, Crystal surfaces, Ideal structure, Micelle structure, Nanowire solar cell, Nonionic surfactants, ZnO crystal, ZnO nanosheets, ZnO nanostructures, ZnO nanowire