Dr. Paravee Vas-Umnuay

ดร. ปารวี วาศน์อำนวย

Education : Ph.D. (Chemical Engineering), Oregon State University, USA., 2013 M.S. (Chemical Engineering), Oregon State University, USA., 2008 B.Eng. (Chemical Engineering), Chulalongkorn University, Thailand, 2006


Department of Chemical Engineering, 9th Floor, Building 4,
Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand




Research Interest

My research focuses on the area of fabrication of nanomaterials for a variety of solar energy-related applications. The main research studies focus on 1) Fabrication of various nanostructured materials, 2) Control of associated parameters in order to achieve desired morphology and structure of the obtained product, and desired optical and electrical properties of the materials, and 3) Development of solar energy conversion into other forms of energy, e.g. heat and electricity, and as a photocatalyst based on fabricated nanomaterials.


  • Synthesis of nanoparticles, nanochains, nanotubes, quantum dots, and thin films based on solution-based processes
  • Morphology and structure-controlled fabrication of nanomaterials
  • Integration of nanomaterials in solar energy-related applications e.g. solar cells, solar selective coatings, and photocatalyst


Synthesis of nanostructured materials

Solution-based thin film deposition

Solar energy-related application


Nuket, P., Akaishi, Y., Yoshimura, G., Vas-Umnuay, P., Kida, T. Enhanced interfacial charge transfer between CsPbBr3 quantum dots and surface-modified TiO2/FTO photoanodes for photocurrent generation, 2022, Materials Today Nano, 18, 100174.

Nuket, P., Akaishi, Y., Yoshimura, G., Kida, T., Vas-Umnuay, P. In-situ TiO2-Coated CsPbBr3 quantum dots with enhanced stability, photoluminescence quantum yields, and charge transport properties, 2022, Ceramics International.

Srisai, J., Muangnapoh, T., Vas-Umnuay, P. Comparative study on photocatalytic degradation of methylene blue using pristine ZnO and Ni/ZnO composite films, 2022, Materials Today: Proceedings.

Pramata, A.D., Akaishi, Y., Kodama, N., Mokuge, Y., Kawashima, S., Shimoyoshi, M., Sairot, C., Nuket, P., Vas-Umnuay, P., Kida, T. TiO2-Coated CsPbI3Quantum Dots Coupled with Polyoxometalates for On/Off Fluorescent Photoswitches, 2021, ACS Applied Nano Materials 4(4), 4103-4113.

Muangnapoh, T.| Srimara, P.| Vas-Umnuay, P. Template- And Magnetic Field-Free Chemical Reduction of Ni Nanochains for Ni-Al2O3Cermet Films: Growth Control, Characterization, and Application, 2020, ACS Omega 5(38), 24584-91.

Nuket, P.| Kida, T.| Vas-Umnuay, P. Influence of Annealing Temperature on Structural Properties and Stability of CsPbBr3/TiO2Core/Shell,
2020, IOP Conference Series: Materials Science and Engineering 965(1), 12023.

Srimara, P.Chevapruk, T.Kumnorkaew, P.Muangnapoh, T.Vas-Umnuay, P. Synthesis of Ni Nanoparticles for Solar Selective Absorber by Chemical Reduction Method, 2020, Materials Today: Proceedings 23, 720-725.

Kumnorkaew, P., Rattanawichai, N., Ratanatawanate, C., Yoriya, S., Lohawet, K., Zhao, Y., Vas-Umnuay, P. Influence of PbS Quantum Dots-Doped TiO 2 Nanotubes in TiO 2 Film as an Electron Transport Layer for Enhanced Perovskite Solar Cell Performance. 2019. IEEE Journal of Photovoltaics, 10 (1), 287-295.

Khothong, N., Anantamongkolchai, T., Vas-Umnuay, P. Morphology and structure controlled fabrication of Cu2ZnSnS4 thin films by convective assembly deposition. 2019. Ceramics International, 45 (5), 6102-6110.

Ountaksinkul, K., Vas-Umnuay, P., Kasempremchit, N., Bumroongsakulsawat, P., Kim-Lohsoontorn, P., Jiwanuruk, T., Assabumrungrat, S. Performance comparison of different membrane reactors for combined methanol synthesis and biogas upgrading. 2019. Chemical Engineering and Processing-Process Intensification, 136, 191-200.

Banjerdteerakul, K., Vas-Umnuay, P., Pavarajarn, V. Synthesis of mesoporous tin dioxide via sol-gel process assisted by resorcinol–formaldehyde gel. 2018. Particuology, 37, 26-32.

Kosoljitkul, P., Rakkroekkong, P., Vas-Umnuay, P. Parameter-controllable microchannel reactor for enhanced deposition of copper sulfide thin films. 2018. Thin Solid Films, 646, 150-157.

Meechoonuck, M., Vas-Umnuay, P., Pavarajarn, V. Synthesis of porous silicon nitride using silica/carbon composite derived from phenol-resorcinol-formaldehyde gel. 2016. Ceramics International 42 (9) , 10879-10885.

Vas-Umnuay, P., Kim, K., Kim, D., Chang, C. Conformal growth of copper sulfide thin films on highly textured surface via microreactor-assisted solution deposition. 2015. CrystEngComm 17 (14) , 2827-2836.

Vas-Umnuay, P., Chang, C. Growth kinetics of copper sulfide thin films by chemical bath deposition. 2013. ECS Journal of Solid State Science and Technology 2 (4)