title: Fabrication and photoelectrochemical characteristics of the patterned CdS microarrays on indium tin oxide substrates.
abstract: In an effort to investigate the extraordinary photoelectrochemical characteristics of nanostructured CdS thin films in promising photovoltaic device applications, the patterned CdS microarrays with different feature sizes (50, 130, and 250 μm in diameter) were successfully fabricated on indium tin oxide (ITO) glass substrates using the chemical bath deposition method. The ultraviolet lithography process was employed for fabricating patterned octadecyltrichlorosilane (OTS) self-assembled monolayers (SAMs) as the functional organic thin layer template. The results show that the regular and compact patterned CdS microarrays had been deposited onto ITO glass surfaces, with clear edges demarcating the boundaries between the patterned CdS region and substrate under an optimal depositing condition. The microarrays consisted of pure nanocrystalline CdS with average crystallite size of about 10.7 nm. The photocurrent response and the optical adsorption of the patterned CdS microarray thin films increased with the decrease of the feature size, which was due to the increased CdS surface area, as well as the increased optical path length within the patterned CdS thin films, resulting from multiple reflection of incident light. The resistivity values increase with the increase of feature size, due to the increase of the relative amount of gaps between CdS microarrays with increasing the feature size of patterned CdS microarrays.
authors.affiliation: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China.
authors.forename: Xu
authors.initials: X
authors.lastname: Meng
authors.forename: Yongjuan
authors.initials: Y
authors.lastname: Lu
authors.forename: Baoping
authors.initials: B
authors.lastname: Yang
authors.forename: Gewen
authors.initials: G
authors.lastname: Yi
authors.forename: Junhong
authors.initials: J
authors.lastname: Jia
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry* / Q000528:radiation effects; D011211:Electric Power Supplies; D004563:Electrochemistry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D046228:Microarray Analysis / Q000295:instrumentation*; D010777:Photochemistry / Q000295:instrumentation*; D013440:Sulfides / Q000737:chemistry* / Q000528:radiation effects; D017971:Tin Compounds / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D019187:Cadmium Compounds; D013440:Sulfides; D017971:Tin Compounds; C034939:cadmium sulfide; C109984:indium tin oxide