fig3
![Vacuum filtration method towards flexible thermoelectric films](https://image.oaes.cc/3f89a79a-cfc2-488d-bcf4-57154af62d54/ss3025.fig.3.jpg)
Figure 3. (A) Photos of Flexible PEDOT:PSS bulky papers; (B) S(2p) XPS spectra of PEDOT:PSS bulky papers: pristine, treated with EG, and treated with FA. Reproduced with permission from Ref[23]. Copyright© 2015. American Chemical Society. EG: Ethylene glycol; PEDOT:PSS: poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid).