Fig. 4: Sub-thermionic OTFTs on flexible substrates.
From: Sub-thermionic, ultra-high-gain organic transistors and circuits
a Photograph of OTFT arrays fabricated on 2-in. polyimide substrate (left) and schematic view of the device structure (right). b Ids − Vgs curves of 100 devices under Vds = −1 V. The L/W of device channel is 5 μm/180 μm. c Statistical distributions of SS for the devices in b. d Voltage transfer characteristics (solid lines) and Av (symbols) of an enhancement-depletion mode amplifier on flexible substrate, under Vdd = −1 and −3 V. e Bending test of a device on polyimide substrate. Both gm and SS remain stable during 104 bending cycles. Inset shows a photograph of flexible device arrays under bending.
