Table 1.

Thermoelectric properties of PEDOT:PSS/Se and control films at room temperature.

System	Electrical Conductivity (σ) / S cm−1	Seebeck Coefficient (S) / μV K−1	Power Factor (S2σ) / μW cm−1K−2
Se a	1.4 x 10−7	~1000 b	~0.0014
PEDOT:PSS	0.29 (±0.17)	24.9 (±0.9)	1.7
PEDOT:PSS/Se	0.37 (±0.19)	45.5 (±3.5)	9.5
PEDOT:PSS/Se c	0.71 (±0.10)	44.5 (±6.7)	15.0

^a The Se pellet was prepared by compression of finely ground Se powders. ^b Bulk Seebeck coefficient of Se crystals [12,13]. ^c Thermally annealed films of PEDOT:PSS/Se at 120 °C for 15 min.