Study of a Novel Hot-Press Process for the Enhancement of Solar Energy Conversion in Passivation/Plasmonic Metal Oxide Cocatalyst System

• Main Authors: Kun-Lin Yang, 楊昆霖
• Other Authors: Wei-Hsuan Hung
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/23138870931276429818

碩士 === 逢甲大學 === 材料科學與工程學系 === 104 === In this study, we will use a simple hot pressing to enhance the efficiency of photocatalytic water splitting of metal oxide cocatalysts, the experimental results have been demonstrated a 1.5-fold enhanced photocurrent after the hot-pressing process. The difference of the material properties will identify by SEM, TEM, XPS, Raman Spectroscopy. The mechanism of the hot pressing will discuss by the PL and Electrochemistry measurement. The contribution on photocatalytic system of the hot pressing can be attributed to the reducing of the film thickness so that the density of the film will increase, thus making the electron mobility promote and rigidity enhance. The photoelectrodes coated gold nanoparticles by sputtering, and utilize the electrochemistry measurement to prove the Surface Plasmonic Resonance enhancing the photocurrent of the water splitting. Finally, we fabricate a 10 nm Al2O3 passivation layers by atomic layer deposition. Utilize the passivation to remove the surface states in the band structure and to improve photocatalytic water splitting kinetics.