title: A simple template-free 'sputtering deposition and selective etching' process for nanoporous thin films and its application to dye-sensitized solar cells.
abstract: A facile and straightforward method is suggested to synthesize nanoporous-TiO₂ thin films for dye-sensitized solar cells (DSSCs). Silver/TiO₂ co-sputtering led to the formation of nanocomposite films which consisted of silver nanoclusters with surrounding TiO₂ matrices, and metal particles were subsequently etched by just immersing in nitric acid. Nanoporous-TiO₂ DSSCs fabricated by this simple and effective process showed power-conversion efficiencies of up to 3.4% at a thickness of only 1.8 μm, which is much superior to that of conventional nanoparticulate-TiO₂ DSSCs with similar thickness.
authors: WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, Korea.
authors: Changwoo
authors: C
authors: Nahm
authors: Hongsik
authors: H
authors: Choi
authors: Jongmin
authors: J
authors: Kim
authors: Sujin
authors: S
authors: Byun
authors: Suji
authors: S
authors: Kang
authors: Taehyun
authors: T
authors: Hwang
authors: Helen
authors: H
authors: Hejin Park
authors: Jaejung
authors: J
authors: Ko
authors: Byungwoo
authors: B
authors: Park