title: Flexible three-dimensional SnO2 nanowire arrays: atomic layer deposition-assisted synthesis, excellent photodetectors, and field emitters.
abstract: Flexible three-dimensional SnO2 nanowire arrays were synthesized on a carbon cloth template in combination with atomic layer deposition and vapor transport. The as-grown nanostructures were assembled by high density quasi-aligned nanowires with a large aspect ratio. Nanoscale photodetectors based on the flexible nanostructure demonstrate excellent ultraviolet light selectivity, a high speed response time less than 0.3 s, and dark current as low as 2.3 pA. Besides, field emission measurements of the hierarchical structure show a rather low turn-on field (3.3 Vμm(-1)) and threshold field (4.5 Vμm(-1)), as well as an excellent field enhancment factor (2375) with a long-term stability up to 20 h. These results indicate that the flexible three-dimensional SnO2 nanowire arrays can be used as functional building blocks for efficient photodetectors and field emitters.
authors.affiliation: Department of Physics, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, PR China. dkm@suda.edu.cn
authors.forename: Kaimo
authors.initials: K
authors.lastname: Deng
authors.forename: Hao
authors.initials: H
authors.lastname: Lu
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Shi
authors.forename: Qiong
authors.initials: Q
authors.lastname: Liu
authors.forename: Liang
authors.initials: L
authors.lastname: Li
mesh_terms: D002244:Carbon / Q000737:chemistry; D004553:Electric Conductivity; D053770:Nanowires / Q000737:chemistry*; D013499:Surface Properties; D017971:Tin Compounds / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D017971:Tin Compounds; D002244:Carbon; C045358:stannic oxide