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Multifunctional TiO2 nanowires-modified nanoparticles bilayer film for 3D dye-sensitized solar cells

H. WANG1,2, Y. LIU1, M. LI1,2, H. HUANG3, HONG-MEI XU1, RUI-JIANG HONG1,* , H. SHEN1

Affiliation

  1. School of Physics and Engineering, Institute for Solar Energy Systems , State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
  2. Faculty of Material Science & Engineering, Guilin University of Technology, Guilin 541004, China
  3. Instrument analysis and research center, Sun Yat-sen University, Guangzhou 510275, China

Abstract

The radial free-standing TiO2 nanowires were rooted into TiO2 nanoparticles film coated Ti wire via a facile hydrothermal method. This TiO2 nanowires-modified nanoparticles bilayer film acted as a multifunctional role for enhancing solar cells efficiency: light trapping, modification of thin film surface cracks, electricity-generation properties and providing fast electron transfer pathway. The study results revealed that the three-dimensional (3D) dye-sensitized solar cells fabricated with TiO2 bilayer film increased by 32.7% in the max output power as compared to the TiO2 NPs film under AM1.5G condition. This increase is mainly attributed to the better light scattering of the TiO2 bilayer film.

Keywords

Nanowire, Nanoparticle, TiO2, Solar cell.

Citation

H. WANG, Y. LIU, M. LI, H. HUANG, HONG-MEI XU, RUI-JIANG HONG, H. SHEN, Multifunctional TiO2 nanowires-modified nanoparticles bilayer film for 3D dye-sensitized solar cells, Optoelectronics and Advanced Materials - Rapid Communications, 4, 8, August 2010, pp.1166-1169 (2010).

Submitted at: June 27, 2010

Accepted at: Aug. 12, 2010