Iranian Journal of Materials Science and Engineering

en The Effect of PSi Pore Structure on the Characteristics of ZnO Rods Fabricated by Hydrothermal Method Research Paper Research Paper <div style="border-bottom:solid windowtext 1.0pt; border-top:solid windowtext 1.0pt; border-left:none; border-right:none; padding:1.0pt 0cm 1.0pt 0cm">Modifying photo-anode structures in DSSC devices is still challenging in improving efficiency. This study focused on the ZnO rod growth on several porous silicon substrates using the hydrothermal method and determining which porous silicon is appropriate for DSSC applications. The materials used for the growth solution were Zn(NO3)26H2O 0.05 M and C6H12N4 0.25 M. The hydrothermal process was carried out at 90°C for 6 h and then annealed at 450°C for 30 min. SEM revealed that PSi pore influences the structure, diameter, and density of ZnO rods. ZnO structures formed in ZnO rods with a dominant vertical growth direction, ZnO rods with an intersection direction, and flower-like ZnO rods. The diameter of the PSi pore affected the density of ZnO rods grown on the PSi. The average diameter size and the density of ZnO rods vary from 747.66-1610.68 nm and 0.22-0.90 rod/μm2. XRD confirmed the presence of ZnO hexagonal wurtzite, Si cubic, and SiO2 monoclinic. UV-Vis spectrometry characterization results showed that sample reflectance was influenced by ZnO rod density and PSi pitch. The larger density of ZnO rods and the smaller pitch of the PSi pore will lead to lower reflectance. In addition, band gap values were obtained in the 3.06-3.75 eV range. FTIR identified the existence of a ZnO vibration bond, indicating that ZnO was successfully grown on all PSi substrates. The ZnO rods grown on P15S1180 are expected to have more appropriate properties among all five samples for DSSC photoanode. </div> ZnO like-flower,Hydrothermal,Reflectance,Porous silicon,ZnO rods 89 98 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5141-1&slc_lang=en&sid=1 Risa Suryana rsuryana@staff.uns.ac.id 1800319475328460019181 1800319475328460019181 Yes Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret Nida Usholihah nidausholihah@student.uns.ac.id 1800319475328460019182 1800319475328460019182 No Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret Markus Diantoro markus.diantoro.fmipa@um.ac.id 1800319475328460019183 1800319475328460019183 No Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang