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Double‐Layer Structure Photoanode with TiO 2 Nanotubes and Nanoparticles for Dye‐Sensitized Solar Cells
Author(s) -
Cao Liqiang,
Wu Congcong,
Hu Qin,
Jin Tetsuro,
Chi Bo,
Pu Jian,
Jian Li
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12081
Subject(s) - dye sensitized solar cell , photocurrent , materials science , layer (electronics) , double layer (biology) , nanoparticle , anodizing , energy conversion efficiency , nanotechnology , optoelectronics , layer by layer , short circuit , chemical engineering , electrolyte , chemistry , electrode , composite material , aluminium , physics , voltage , quantum mechanics , engineering
Here, we report a novel double‐layer structure photoanode with TiO 2 nanotube ( TNT ) layer and TiO 2 nanoparticle ( TP ) layer via a two‐step method of electrochemical anodization and screen printing for dye‐sensitized solar cells ( DSSC s). The results indicate that DSSC s with this double‐layer structure have significant advantages of large surface area, long electron lifetime, superior electron recombination restraint characteristics, and high light scattering. The layer thickness of nanotubes and nanoparticles is also investigated and finally an optimized double‐layer structure with excellent performance is prepared. With such a double‐layer structure photoanode, DSSC with a relative high conversion efficiency of 6.43% and a short‐circuit photocurrent density of 16.40 mA·cm −2 is obtained.