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Title: Photoelectrochemical performance of DSSC with monodisperse and polydisperse ZnO SPs

Zinc oxide, ZnO, is one of oxide semiconductors being used in DSSC. ZnO is promising material for having fairly higher energy band gap and much higher bulk electron mobility than that of anatase TiO{sub 2}, the most widely used semiconductor for DSSC photoelectrode. This study introduces the synthesis of ZnO by precipitation method. The synthesis involves ZnAc dihydrate and diethylene glycol (DEG) for the chemicals. Various size of ZnO spherical particles (SPs) are obtained in polydisperse and monodisperse particles. Monolayer and bilayer DSSCs are fabricated in sandwich structure and sensitized with N719 dye for 3 and 5 hours. Monolayer DSSC using monodisperse particles (422 nm) is able to generate highest conversion efficiency of 0.569% (V{sub oc} = 541.3 mV, J{sub sc} = 1.92 mA/cm{sup 2}, and fill factor of 54.78%). Bilayer DSSC, i.e. combined 422 - 185 nm ZnO layer, can optimize the photocurrent action spectra in UV regime leading to high conversion efficiency of 0.568 (V{sub oc} = 568.2 mV, J{sub sc} = 2.22 mA/cm{sup 2}, and fill factor of 47.25%). The longer sensitizing time does not always produce better conversion efficiency since it can induce the dissolution of Zn atoms and formation of Zn{sup 2+} - dye resistingmore » the electron transport from dye to ZnO photoelectrode.« less
Authors:
;  [1] ; ;  [2] ; ;  [3]
  1. Department of Engineering Physics, Institut Teknologi Sepuluh Nopember (Indonesia)
  2. Kumamoto Industrial Research Institute (Japan)
  3. Department of Applied Chemistry and Biochemistry, Kumamoto University (Japan)
Publication Date:
OSTI Identifier:
22266036
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1586; Journal Issue: 1; Conference: NNS2013: 5. nanoscience and nanotechnology symposium, Surabaya (Indonesia), 23-25 Oct 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DYES; EFFICIENCY; ELECTRON MOBILITY; FILL FACTORS; GLYCOLS; PARTICLES; PRECIPITATION; SEMICONDUCTOR MATERIALS; SPECTRA; SYNTHESIS; TITANIUM OXIDES; ZINC IONS; ZINC OXIDES