title: Different hierarchical nanostructured carbons as counter electrodes for CdS quantum dot solar cells.
abstract: CdS quantum dot sensitized solar cells based on TiO(2) photoanode and nanostructured carbon as well as Pt as counter electrodes using iodide/triiodide and polysulfide electrolytes were fabricated to improve the efficiency and reduce the cost of solar cells. Compared with conventional Pt (η = 1.05%) and CMK-3 (η = 0.67%) counter electrodes, hollow core-mesoporous shell carbon (HCMSC) counter electrode using polysulfide electrolyte exhibits much larger incident photon to current conversion efficiency (IPCE = 27%), photocurrent density (J(sc) = 4.31 mA.cm(-2)) and power conversion efficiency (η = 1.08%), which is basically due to superb structural characters of HCMSC such as large specific surface area, high mesoporous volume, and 3D interconnected well-developed hierarchical porosity network, which facilitate fast mass transfer with less resistance and enable HCMSC to have highly enhanced catalytic activity toward the reduction of electrolyte shuttle.
authors: Department of Advanced Materials Chemistry, Korea University, 208 Seochang, Jochiwon, ChungNam 339-700, Republic of Korea.
authors: Gouri Sankar
authors: GS
authors: Paul
authors: Jung Ho
authors: JH
authors: Kim
authors: Min-Sik
authors: MS
authors: Kim
authors: Kwangseok
authors: K
authors: Do
authors: Jaejung
authors: J
authors: Ko
authors: Jong-Sung
authors: JS
authors: Yu