Home / Staff / Academic Staff / THIDARAT SUPASAI


Thidarat-2 email: fscitrs@ku.ac.th
Education: B.Sc.(Physics) Mahidol University, Thailand.
M.Sc.(Physics) Chulalongkorn University, Thailand.
Ph.D.(Physics) Chulalongkorn University, Thailand.
Postdoctoral Fellow: Helmholtz-Center Berlin for Materials and Energy, Germany.
Research interests: Thin films, Hybrid and organic solar cells
Surface modification, Surface/interface characterization
website: http://nano-pv.sci.ku.ac.th
The main area Dr. Supasai`s research is “Nanostructured Materials”. In this experimental research Dr. Supasai`s group designs materials and structures useful for applications in optoelectronics and environment. A large effort of Dr. Supasai`s research focuses on photovoltaics, including organic-hybrid solar cell materials and device physics, inorganic materials like TiO2, ZnO, MoO3 etc., where the focus is to synthesize these materials via environmentally green chemical processes and to utilize them for the next generation of solar cell applications. Additionally, thin film research is mostly focused on the synthesis of the wide band gap materials via ion layer reaction (ILGAR), DC-RF sputtering, and resistive thermal evaporation and study of the structural, optical, and photo-induced charge generation and separation behaviors of these layers.


Selected Patent

1. A spray-nebulous chemical deposition system for thin film preparation, T. Supasai, N. Rujisamphan, V. Engkasorrarat,  Feb 2016, Thai petty patent no. 1603000281

Selected Publications

1.  Limpamanoch, P.; Rujisamphan,N.; Kumnorkaew, P.; Amornkitbamrung, V.; Tang, I-M.; Zhang, Q.; Supasai, T. Understanding  effects cesium in CH(NH2)2PbI3 for stabilizing CH(NH2)2PbI3/CsPbI3 interface under UV illumination. J. Phys. Chem. C, 2019, 123, 12117-12125.

2. Henjongchom, N.; Rujisamphan, N.; Ntia, T. S.; Kumnorkaew, P.; Tang, I-M.; Amornkitbumrung, V.; Supasai, T. Ultrasonically
Sprayed-on Perovskite Solar Cells-Effects of Organic Cation on Defect Formation of CH3NH3PbI3 Films. Curr. Appl. Phys., 2019,
19, 1427–1435.

3. Henjongchom, N.;  Rujisamphan, N.; Tang, I-M.;  Supasai, T. “Surface Photovoltage Spectroscopy Study of Ultrasonically Sprayed-Aerosol CH3NH3PbI3 Perovskite Crystals”, Phys. Status Solidi A, 2018, 1800133.

4. Supasai, T.; Amornkitbamrung, V.; Thanachayanont, C.; Tang, I-M.; Sutthibutpong, T.;  Rujisamphan, N. Visualizing Nanoscale Phase  Morphology for Understanding Photovoltaic Performance of PTB7: PC71BM Solar Cell, Appl. Surf. Sci, 2017, 422, 505-517.

5. Supasai, T.; Henjongchom, N.; Tang, I-M.;  Deng, F.; Rujisamphan, N. Compact Nanostructured TiO2 Deposited by Aerosol Spray Pyrolysis for the Hole-Blocking Layer in a CH3NH3PbI3 Perovskite Solar Cell”, Sol Energy, 2016, 136,515-524.

6. Design of Low Cost Gas Sensor Based on SrTiO3 and BaTiO3 Films, S. K. Hodak, T. Supasai, A. Wisitsoraat, H. Jose Hodak, Design of Low Cost Gas Sensor Based on SrTiO3 and BaTiO3 Films, Journal of Nanoscience and Nanotechnology 2010, 10 7236-7238.
introducing myself_1

Laboratory’s facilities include:

1. Ion Layer Gas Reaction (ILGAR) system
2. DC-RF sputtering system
3. Surface modification-Plasma cleaning
4. Resistive thermal evaporation system (Coming)
5. Surface Photovoltage (SPV) spectrometer
6. Quantum efficiency measurement (Coming)
7. Spin coaters (Laurell cop.)
8. Furnace-hot plates
9. Screen printer