title: A simple self-assembly route to single crystalline SnO2 nanorod growth by oriented attachment for dye sensitized solar cells.
abstract: One-dimensional (1-D) SnO(2) nanorods (NRs) with a rutile structure are grown on various substrates regardless of the lattice-mismatch by using a new nutrient solution based on tin oxalate, which generated supersaturated Sn(2+) sources. These affluent sources are appropriate for producing a large number of SnO(2) nanoparticles, sufficient for stacking on a substrate surface by gravity, which then acts as a seed layer for subsequent nanorod growth. Single crystalline nanorods are grown along the [001] direction by the oriented attachment phenomenon in which the attached nanoparticles were rearranged to reduce the overall surface energy through sharing thermodynamically unstable crystal (001) planes. Furthermore, the grown SnO(2) NRs are covered with a TiO(2) particulate film and utilized as a photoanode in DSSCs. The power conversion efficiency is 8.61%, enhanced by 14.2% compared to the photoanode with only a TiO(2) particulate film.
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 500-712, South Korea.
authors.forename: Hui
authors.initials: H
authors.lastname: Song
authors.forename: Kwang-Ho
authors.initials: KH
authors.lastname: Lee
authors.forename: Huisu
authors.initials: H
authors.lastname: Jeong
authors.forename: Soong Ho
authors.initials: SH
authors.lastname: Um
authors.forename: Gil-Sang
authors.initials: GS
authors.lastname: Han
authors.forename: Hyun Suk
authors.initials: HS
authors.lastname: Jung
authors.forename: Gun Young
authors.initials: GY
authors.lastname: Jung
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012993:Solar Energy; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D017971:Tin Compounds; C045358:stannic oxide