Abstract
Solar cells using natural power sources continue to develop rapidly. In the future, we expect to use organic thin fi lm solar cells instead of inorganic solar cells because CO2 emissions can be reduced during their manufacturing processes. However, the conversion effi ciency of organic thin fi lm is lower than that of inorganic solar cells, and organic thin film is also susceptible to heat. We propose secondary processing of organic thin fi lm by high-power laser. Femtosecond laser and YAG lasers are focused on organic thin fi lm in the XY stage to measure the processed thin fi lm by DFM. The transmitted light at the laser’s processed zone is measured to estimate the absorbance characteristics. The peak wavelength of the absorbed light of PCDTBT processed by femtosecond laser shifts to a shorter wavelength.
