Siam Physics Congress 2018

Session

A5: Nanoscale and Surface

21 May 2018, 15:30

Sync room

Conveners

A5: Nanoscale and Surface

• Anurat Wisitsoraat

434. NiOx as Hole Selective Contact to Improve Stability and Efficiency of Inverted Perovskite Solar Cells via Vacuum Flash Technique

Mr Stanilius Ntia Teneng (Faculty of Science, King Mongkut’s University of Technology Thonburi)

21/05/2018, 15:30

Surface, Interface and Thin Film

Oral

Abstract
The research in organic-inorganic halide perovskite solar cells (PSCs) is taking an upward trend. This is due to their excellent photovoltaic efficiency which is exceeding 22%, ease of processability and low cost. In order to meet the energy demand of the world using this technology, the stability and efficiency of PSCs need to be enhanced. This can be achieved by using...

440. Surface Modification of TiO${}_2$ for Efficiency Enhancement in Perovskite Solar Cells

Mr Kittiwut Chaisan (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University)

21/05/2018, 15:45

Surface, Interface and Thin Film

Oral

Surface modification of titanium dioxide (TiO${}_2$) substrates was performed to enhance efficiency of perovskite solar cells efficiency by inserting small organic molecules between TiO${}_2$ electron transporting layer and CH${}_3$NH${}_3$PbI${}_3$ perovskite layer. TiO${}_2$ substrates were immersed into a solution of amino propionic acid (APA) or amino benzoic acid (ABA) in order to tune up and improve...

534. Different natures of sub-gap states in 135-CIGS / 112-CIGS and 112-CIGS / 135-CIGS heterostructures investigated by photoluminescence technique

Ms Boonyaluk Namnuan (Department of Physics, Faculty of Science, Chulalongkorn University)

21/05/2018, 16:00

Surface, Interface and Thin Film

Oral

CuIn${}_{1-x}$Ga${}_x$Se${}_2$ (112-CIGS) has been proposed as a material for high efficiency thin film solar cells with reliably applicable photovoltaic properties. Higher efficiency devices can be achieved by various surface treatments and are believed to have Cu deficiency at the surface. One of the possible techniques is to have a very thin Cu-depleted surface, e.g....

588. Low-temperature Annealing Effects on Properties of Tin-doped Zinc Oxide Thin Films in Perovskite Solar Cells

Pakawat Malison

21/05/2018, 16:15

Surface, Interface and Thin Film

Oral

In this study, effects of low-temperature annealing on properties of tin-doped zinc oxide (TZO) thin were investigated. TZO film prepared by a sol−gel method is employed as an electron transport material in perovskite solar cells. After Sn doping, optical properties of the thin films changes. Different temperature annealing affects also surface morphology of the films. Since surface morphology...

634. Hydrophobicity Recovery of Polydimethylsiloxane Treated with Oxygen Plasma and Ion Implantation

Mr Sirawut Natyanun (Department of Physics and Materials Science, Chiang Mai University, Chiang Mai, 50200, Thailand)

21/05/2018, 16:30

Surface, Interface and Thin Film

Oral

One of a few disadvantage properties of polymethylsiloxane (PDMS) is its hydrophobicity which can hinder its fluidic applications. Oxygen plasma treatment on PDMS surfaces is a conventional method in rendering them hydrophilic, however hydrophobicity returns within days after treatment. This study proposes oxygen ion implantation at the micrometer scale inside PDMS structures to ensure lasting...

688. Synthesis and Characterization of Tin oxide Thin Film for Gas Sensor Applications

ถนอมรัตน์ พฤกษ์เจริญ

21/05/2018, 16:45

Surface, Interface and Thin Film

Oral

The effects of annealing temperature on the structural and electrical properties of tin dioxide ($Sn{O}_2$) thin films were systematically studied for a gas sensing application. Tin dioxide thin films with different number of layers and annealing temperature were prepared on indium tin oxide substrates by sol-gel dip-coating technique. SEM micrographs show that the approximately grain size of...

711. High quality nano-silica aerogels prepared by a facile method from bagasse ash under ambient pressure drying

Paphapin Teannava (paphapin01040@gmail.com)

21/05/2018, 17:00

Surface, Interface and Thin Film

Oral

Nano-silica aerogels were synthesized from sodium silicate which is obtained from the reaction of bagasse ash and NaOH. Silanes and salazane was employed to control the formation and structure of silica aerogels in this study. To initiate the modification of silica aerogel properties, 1.0 M NH4OH solution was utilized. The silica aerogel resulted from the reaction was dried under ambient...

718. Studies on structural, characterization and electric properties of Cu-doped BiFeO3 thin films

Mr Tachgiss Jampreecha (Suranaree university of technology)

21/05/2018, 17:15

Surface, Interface and Thin Film

Oral

Cu-doped BiFeO${}_3$ thin films were fabricated by spin coating method. The thin films were deposited on Pt/Si-N type substrate. X-rays diffraction were used to reveal purity and impurity of Cu-doped BiFeO${}_3$ thin films crystalline structure on Cu-doping concentration as 0, 0.1, 0.2, 0.5 and 1.0, respectively. X-ray absorption spectroscopy (XAS) were used to investigate Fe and Cu elements...