Fig. 2: The characteristic curves of the DNTT OFETs with different grain sizes.

a–c The temperature dependent transfer curves of OFETs with grain sizes of about 200 nm, 350 nm and 520 nm. Vds = −60 V. d–f The output curves of OFETs with different DNTT grain sizes corresponding (a–c). The character l in all figures denotes grain size. All electrical measurements were performed in dark ambient unless otherwise specified.