Searching an inexpensive and effective way to improve the thermoelectric properties of organic materials can greatly expand the practical application of thermoelectric thin film generator. Here, we adopt the triple treatment of ethylene glycol ((CH2OH)2) , ethanol(C2H5OH) doping and (CH2OH)2 dedoping to tune the micro stacking structure of PEDOT:PSS. The obtained PEDOT:PSS thermoelectric film material has the highest power factor (PF) up to 330.597 μWm-1,which stems from the high Seebeck coefficient (S) and conductivity (σ). Furthermore, we fabricated the thermoelectric generator to explore the conversion process of the solar energy photothermal. The maximum power output of the home-made module device with solar energy as the heat source reaches 9.8 nW. This work is a prospective experiment for development of the solar photothermal conversion based on the thin film and device