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Title: SnO 2 nanowires decorated with forsythia-like TiO 2 for photoenergy conversion

Here, we report forsythia-like TiO 2-decorated SnO 2 nanowires on fluorine-doped SnO 2 electrode as a photoelectrode of dye-sensitized solar cells. When SnO 2 nanowires grown via vapor-liquid-solid reaction were soaked in TiCl 4 solution, leaf-shaped rutile TiO 2 was grown onto the surface of the nanowires. The TiO 2 decoration increases the short circuit current (J sc), open circuit voltage (V oc) and fill factor (FF) of dye-sensitized solar cells. Further, electron lifetime increased by employing an atomic-layer-deposited TiO 2 nanoshell between the TiO 2 leaves and the SnO 2 nanowire, due to preventing charge recombination at the nanowire/electrolyte interface.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [3]
  1. Seoul National Univ. (Korea, Republic of)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Kyungpook National Univ., Daegu (South Korea)
Publication Date:
Report Number(s):
NREL/JA-5900-68729
Journal ID: ISSN 0167-577X
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Materials Letters
Additional Journal Information:
Journal Volume: 202; Journal Issue: C; Journal ID: ISSN 0167-577X
Publisher:
Elsevier
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; SnO2; nanowire; TiO2 decoration; dye-sensitized solar cells; lifetime
OSTI Identifier:
1365698