Femtosecond laser deposition of TiO2 nanoparticle-assembled films with embedded CdS nanoparticles - Details

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Abstract：

Based　on　the　normal　pulsed　laser　ablation　method,　femtosecond　pulsed　laser　deposition　(fs-PLD)　is　adopted　in　vacuum　for　the　production　of　TiO2　nanoparticle-assembled　films.　We　study　the　morphology　and　electronic　characteristics　of　TiO2　nanoparticle-assembled　films　deposited　at　different　oxygen　background　gas　pressures　from　high　vacuum　(∼10-4　Pa)　to　100　Pa　and　different　deposition　time.　Our　results　show　that　TiO2　nanoparticle-assembled　films　obtained　in　high　vacuum　present　both　a　mixture　with　rutile　phase　and　anatase　phase　and　a　pure　rutile　phase.　At　the　same　time,　there　are　more　mesoporous　structures　in　the　film　after　annealing,　which　is　beneficial　for　the　enhancement　of　photocatalytic　activity.　In　water　splitting　experiment,　part　of　the　TiO2　nanoparticle-assembled　films　embedded　with　a　small　mass　fraction　of　CdS　nanoparticles　(∼5%)　present　an　interesting　photocurrent　enhancement　with　a　maximum　value　of　∼0.2　mA/cm2　under　a　solar　simulator.　©　2014　Tianjin　University　of　Technology　and　Springer-Verlag　Berlin　Heidelberg.

Keyword：

II-VI semiconductors Oxide minerals Femtosecond lasers Titanium dioxide Pulsed lasers Photocatalytic activity CdS nanoparticles Cadmium sulfide Pulsed laser deposition TiO2 nanoparticles Laser ablation Sulfur compounds

Author Community：

[ 1 ] [Ni, Xiao-chang]School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China
[ 2 ] [Ni, Xiao-chang]CNR-SPIN and Dipartimento di Fisica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, Napoli, 80126, Italy
[ 3 ] [Sang, Li-xia]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Zhang, Hong-jie]Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Kiliyanamkandy, Anoop]CNR-SPIN and Dipartimento di Fisica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, Napoli, 80126, Italy
[ 6 ] [Amoruso, Salvatore]CNR-SPIN and Dipartimento di Fisica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, Napoli, 80126, Italy
[ 7 ] [Wang, Xuan]School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China
[ 8 ] [Wang, Xuan]CNR-SPIN and Dipartimento di Fisica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia, Napoli, 80126, Italy
[ 9 ] [Fittipaldi, Rosalba]CNR-SPIN UOS Salerno, Via Ponte don Melillo, Fisciano, SA, 84084, Italy
[ 10 ] [Li, Tong]School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China
[ 11 ] [Hu, Ming-lie]Ultrafast Laser Laboratory, and Key Laboratory of Opto-electronic Information Technology, Ministry of Education, Tianjin University, Tianjin, 300072, China
[ 12 ] [Xu, Li-juan]School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China