標題: Effects of cross-sectional area on the tunneling-junction array in octahedral PbSe colloidal-nanocrystal solids
作者: Chiu, Shao-Chien
Jhang, Jia-Sin
Chen, Jenn-Fang
Fang, Jiye
Jian, Wen-Bin
電子物理學系
Department of Electrophysics
公開日期: 2013
摘要: Octahedral PbSe colloidal nanocrystals (NCs) are used to assemble a solid. Because of the special feature of the apexes of the octahedrons, the cross-sectional area of the inter-dot tunneling junctions is much smaller than that formed between spherical NCs. The inter-dot separation between NCs is easily adjusted by mild thermal treatment. Like a spherical NC-solid, the resistance of the octahedral NC-solid is exponentially dependent on the inter-dot separation. On the contrary, due to the difference in the cross-sectional area between the NCs, electron transport in the octahedral NC-solid does not follow the same model used for the explanation of electron transport in a spherical NC-solid. Through analyses of current-voltage and resistance-temperature behaviors, we have confirmed that the model of fluctuation-induced tunneling conduction fits very well with all of the data and explains the variation in the electrical properties of octahedral PbSe colloidal NC-solids after thermal annealing.
URI: http://hdl.handle.net/11536/22824
http://dx.doi.org/10.1039/c3cp52083h
ISSN: 1463-9076
DOI: 10.1039/c3cp52083h
期刊: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume: 15
Issue: 38
起始頁: 16127
結束頁: 16131
顯示於類別:期刊論文


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