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DOI	10.1016/j.mtener.2021.100752
	On manipulating the thermoelectric potential of p-type ZnO by nanostructuring
	Maia, M. M.; Pires, A. L.; Lopes, A. M. L.; Pereira, A. M.
通讯作者	Pires, AL ; Pereira, AM (corresponding author), Univ Porto, Fac Sci, IFIMUP Inst Phys Adv Mat Nano Technol & Photon, Dept Phys & Astron, Rua Campo Alegre 687, P-4769007 Porto, Portugal.
来源期刊	MATERIALS TODAY ENERGY
ISSN	2468-6069
出版年	2021
卷号	21
英文摘要	Throughout this work, ZnO nanoparticles were produced by a simple co-precipitation method, in which the volume of the basic solution (NaOH, 5-30 ml) was varied to understand its effect on the properties of the nanoparticles. A structural and morphological effect was observed, namely a change in reflections between 2 theta = 31.75 degrees (100) and 2 theta = 34.4 degrees (002) peaks. At the same time, nanoparticles changed from a hexagonal prism shape to a desert-rose stones structure for high base concentrations. The transport measurements were performed from room temperature (RT) up to 340 K. At RT, a correlation between the Seebeck coefficient and the electrical conductivity was achieved, whereas the thermal conductivity behaves distinctly. A thermal conductivity value of 0.5 W m(-1) K-1 was observed, which is two orders of magnitude lower than the bulk counterpart. The behaviours of the PF and ZT also reveal the different influences of the electrons and the phonons for the different nanostructures, since the electronic phenomena predominate in the hexagonal prism structures, the phonon phenomena predominate in the desert-rose stones, due to the reduced dimension of these structures. For higher temperatures, a thermal activation model was used to determine the Activation Energy (E-a), leading to values in the hundredths of meV range, with higher values for the volumes of NaOH where a mixture of the two types of structures is observed, where the presence of different interfaces created a barrier for the carriers to pass from grain to grain. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Thermoelectric ZnO Nanostructures Co-precipitation Thermal activation theory
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000701784300002
WOS关键词	AL-DOPED ZNO ; THERMAL-CONDUCTIVITY ; OPTICAL-PROPERTIES ; HIGH-PERFORMANCE ; TEMPERATURE ; GROWTH ; ENHANCEMENT ; NANOWIRES ; FIGURE ; MERIT
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364149
作者单位	[Maia, M. M.; Pires, A. L.; Lopes, A. M. L.; Pereira, A. M.] Univ Porto, Fac Sci, IFIMUP Inst Phys Adv Mat Nano Technol & Photon, Dept Phys & Astron, Rua Campo Alegre 687, P-4769007 Porto, Portugal
推荐引用方式 GB/T 7714	Maia, M. M.,Pires, A. L.,Lopes, A. M. L.,et al. On manipulating the thermoelectric potential of p-type ZnO by nanostructuring[J],2021,21.
APA	Maia, M. M.,Pires, A. L.,Lopes, A. M. L.,&Pereira, A. M..(2021).On manipulating the thermoelectric potential of p-type ZnO by nanostructuring.MATERIALS TODAY ENERGY,21.
MLA	Maia, M. M.,et al."On manipulating the thermoelectric potential of p-type ZnO by nanostructuring".MATERIALS TODAY ENERGY 21(2021).