Topics : >> Surface photovoltage studies on CH3NH3PbI3 perovskite: influence of selective electron contact layers on photo-induced charge separation (Grant no. MRG6080173, TRF) >> Design New Perovskite Solar Cell Materials with Surface/Interface Engineering, NRCT) >> […]Read More
Kelvin probe force microscopy (KPFM) KPFM is also known as surface potential microscopy, is a noncontact variant of atomic force microscopy (AFM). With KPFM, the work function of surfaces can be observed at atomic or […]Read More
Original papers published in 2023 46. Chinnatip Harnmanasvate, Rungroj Chanajaree, Nopporn Rujisamphan, Yaoguang Rong, Rongrong Cheacharoen. “Ambient Gas-Quenching Fabrication of MA-Free Perovskite Solar Cells Enabled by an Eco-friendly Urea Additive” ACS Applied Energy Materials. 2023. (doi.org/10.1021/acsaem.3c01829) […]Read More
Dr. Nopporn Rujisamphan co-leads the “Interface and Surface Laboratory (ISC)“ group, which specializes in developing hybrid and all-inorganic perovskite-based solar cell devices. The solar cell performance has reached an impressive efficiency of approximately ∼22.4% (single junction on a solid substrate) and exceeding 16.53% (on a flexible substrate), marking the highest recorded efficiencies in Thailand. The laboratory integrates material design with device fabrication, employing characterization tools such as photoluminescence (PL), time-resolved PL, and external quantum efficiency (EQE) measurements to gain a comprehensive understanding of material properties. The research group utilizes deposition techniques from solutions and vacuum-based, like atomic layer deposition (ALD) and electron beam (E-beam) deposition to ensure the reliability and reproducibility of fabricated layers. In addition to that, research activities in carbon capture development play a crucial role in addressing the global challenge; the research group keens on investigating how the carbon capture can be integrated with renewable energy sources to create a more sustainable and efficient energy grid. Understanding the interface between the perovskite absorber layer and charge-selective contacts is, therefore, very crucial to improving efficiency and stability. The research endeavors include a cutting-edge interdisciplinary approach known as “Computer Intelligence-Aided Device Simulation” and “Density Functional Theory” (DFT) calculations, which is led by Dr. Non Thongprong. This innovative methodology combines computational physics, computer intelligence, and experimental findings to gain profound insights into the fundamental properties of perovskite materials. By leveraging this approach, we aim to advance the development of stable and highly efficient solar cells.
If you possess an enthusiasm for cutting-edge research and innovation, we encourage you to apply and become an integral part of our team, Faculty of Science, KMUTT.
In article number 2200964, Non Thongprong, Thidarat Supasai, Nopporn Rujisamphan, and co-workers presented the pseudohalide salt of sodium tetrafluoroborate, whose anions have a higher electronegativity than other halide salts, with the potential to passivate the surface of tin oxide while enhancing the optoelectronic properties of a perovskite film. The current study presents a facile and effective method for enhancing the moderate thermal stability and performance of solar cell devices.
The most fundamental properties of photovoltaic materials are impacted by the photoinduced charge separation behavior, which can be improved by modifying the underlying layer that the perovskite is prepared on top. In article number 2201632, Non Thongprong, Nopporn Rujisamphan, and colleagues investigate the impacts of using alkali salts on porous TiO2 from experimental and computational points of view to provide a better understanding of such surface passivation.