KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Jarernboon, WiratSubject: search.filters.subject.Titanium dioxide

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Modification of working electrode of dye-sensitized solar cell using TiO2 nanopraticles/TiO2 nanofibers/CNT composite
    (2013-10-29)
    Mekprasart, Wanichaya
    ;
    Jarernboon, Wirat
    ;
    Techitdheera, Wicharn
    The working electrode of dye-sensitized solar cell was modified using composite material of TiO<inf>2</inf> particles/TiO<inf>2</inf> nanofibers/CNT by doctor blade method. Structural properties of pre-cursor materials and as-prepared working electrodes were well characterized by X-ray diffraction and scanning electron microscopy. The efficiency and relevant parameters of solar cells with modified electrodes were measured. The optimized weight ratios of 1 wt.% TiO<inf>2</inf> nanofibers derived from leucoxene and 0.01 wt.% CNT exhibited the highest improvement of DSSC efficiency with solar efficiency of 1.11% and fill factor of 0.32. The increase of current density may be originated from easier electron transfer that occurred in the device with modified TiO<inf>2</inf> particles/TiO<inf>2</inf> nanofibers/CNT composite. © (2013) Trans Tech Publications, Switzerland.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Optimization of TiO 2 nanoparticle mixed PEDOT-PSS counter electrodes for high efficiency dye sensitized solar cell
    (2012-09-01)
    Maiaugree, Wasan
    ;
    Pimanpang, Samuk
    ;
    Towannang, Madsakorn
    ;
    Saekow, Saman
    ;
    Jarernboon, Wirat
    Poly(3,4-Ethylendioxythiophene)-Poly(Styrene Sulfonate) (PEDOT-PSS) mixed with titanium dioxide (TiO <inf>2</inf>) nanoparticles was coated on conductive glass substrate by a doctor blading method and used as dye-sensitized solar cell (DSSC) counter electrodes. The energy conversion efficiency is significantly improved after TiO <inf>2</inf> nanoparticle incorporation. This improvement is attributed to an increase in counter electrode catalytic activity and a decrease in counter electrode charge transfer resistance. These phenomena were observed using Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS), respectively. The efficiency of polymer-TiO <inf>2</inf> based DSSCs varied with the ratio of small (∼ 25 nm) to large (∼ 100 nm) TiO <inf>2</inf> nanoparticles. The highest efficiency (∼ 8.49%) was obtained with a ratio of 30% large to 70% small (wt/wt) nanoparticles inTiO <inf>2</inf> electrodes. This efficiency is superior to that of Pt DSSC (∼ 7.50%). © 2011 Elsevier B.V.