title: Aqueous preparation of surfactant-free copper selenide nanowires.
abstract: Uniform surfactant-free copper selenide (Cu2-xSe) nanowires were prepared via an aqueous route. The effects of reaction parameters such as Cu/Se precursor ratio, Se/NaOH ratio, and reaction time on the formation of nanowires were comprehensively investigated. The results show that Cu2-xSe nanowires were formed through the assembling of CuSe nanoplates, accompanied by their self-redox reactions. The resultant Cu2-xSe nanowires were explored as a potential thermoelectric candidate in comparison with commercial copper selenide powder. Both synthetic and commercial samples have a similar performance and their figures of merit are 0.29 and 0.38 at 750K, respectively.
authors.affiliation: Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia; Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan 430079, China.
authors.forename: Xinqi
authors.initials: X
authors.lastname: Chen
authors.affiliation: Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia; School of Radiation Medicine and Radiation Protection, Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China. Electronic address: zhenl@uow.edu.au.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.affiliation: Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia.
authors.forename: Jianping
authors.initials: J
authors.lastname: Yang
authors.affiliation: Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia; School of Radiation Medicine and Radiation Protection, Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Sun
authors.affiliation: Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia.
authors.forename: Shixue
authors.initials: S
authors.lastname: Dou
mesh_terms: D003300:Copper / Q000737:chemistry*; D004553:Electric Conductivity; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D012643:Selenium / Q000737:chemistry*; D012666:Semiconductors
chemical_list: D003300:Copper; D012643:Selenium
keywords: Aqueous preparation; Copper selenide; Semiconductor nanowires; Surfactant free