Journal ArticleDOI
Electronic conductivity in nanostructured TiO2 films permeated with electrolyte
TLDR
By combining two experimental techniques, electrochemical impedance spectroscopy (EIS) and the coplanar electrodes-gap configuration, the authors monitored the electronic conductivity in nanoporous Ti0 2 in aqueous solution (pH 2) as a function of the electrode potential.Abstract:
By combining two experimental techniques, electrochemical impedance spectroscopy (EIS) and the coplanar electrodes-gap configuration, we monitored the electronic conductivity in nanoporous Ti0 2 in aqueous solution (pH 2) as a function of the electrode potential. As a result of electron accumulation the conductivity varies over more than eight orders of magnitude up to a maximum σ = 3.7 x 10 -3 Ω -1 cm -1 .read more
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Journal ArticleDOI
Hysteresis-less inverted CH3NH3PbI3 planar perovskite hybrid solar cells with 18.1% power conversion efficiency
TL;DR: In this paper, an inverted MAPbI3 planar hybrid solar cells with 18.1% average power conversion efficiency was fabricated by depositing dense pinhole-free MAPBI3 perovskite on a PEDOT:PSS/ITO substrate via a single-step spin-coating of solubility controlled MAPI3 solution.
Journal ArticleDOI
Characteristics of high efficiency dye-sensitized solar cells.
Qing Wang,Seigo Ito,Michael Grätzel,Francisco Fabregat-Santiago,Iván Mora-Seró,Juan Bisquert,Takeru Bessho,Hachiro Imai +7 more
TL;DR: Impedance spectroscopy was applied to investigate the characteristics of dye-sensitized nanostructured TiO2 solar cells with high efficiencies of light to electricity conversion of 11.1% and 10.2%, allowing a separate analysis of the contribution of different resistive processes to the overall conversion efficiency.
Journal ArticleDOI
Surface optimization to eliminate hysteresis for record efficiency planar perovskite solar cells
Dong Yang,Xin Zhou,Ruixia Yang,Zhou Yang,Wei Yu,Xiuli Wang,Can Li,Shengzhong Liu,Shengzhong Liu,Robert P. H. Chang +9 more
TL;DR: In this paper, the authors reported a drastically improved solar cell efficiency via surface optimization of the TiO2 ETL using a special ionic-liquid (IL) that shows high optical transparency and superior electron mobility.
Journal ArticleDOI
Titanium Dioxide Nanomaterials for Photovoltaic Applications
TL;DR: This paper presents a meta-analyses of the chiral stationary phase transition of Na6(CO3)(SO4) to Na2SO4 using a high-performance liquid chromatography apparatus (HPCA) for the first time.
Journal ArticleDOI
Physical Chemical Principles of Photovoltaic Conversion with Nanoparticulate, Mesoporous Dye-Sensitized Solar Cells
TL;DR: In this article, the authors review the status of the understanding of dye-sensitized solar cells (DSSC), emphasizing clear physical models with predictive power, and discuss them in terms of the chemical and electrical potential distributions in the device.