VNU Journal of Science Mathematics – Physics, Vol 37, No 1 (2021) 12 20 12 Original Article Some Preliminary Results of the Synthesis and Investigation of the Glass/FTO/Si/Au/ Embedded Thin Film for Application in the Modified Plasmonic Solar Cell Nguyen Tien Thanh3, 2, Dao Khac An1, 2, *, Nguyen Si Hieu2, Nguyen Thi Mai Huong4 1Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi, Vietnam 2Institute of Materials Science, Vietnam Academy of Science and Technology (VA[.]