Vacuum production of OTFTs by vapour jet deposition of dinaphtho [2,3-b:2 ',3 '-f]thieno[3,2-b]thiophene (DNTT) on a lauryl acrylate functionalised dielectric surface

作者：Ding Ziqian; Abbas Gamal A W; Assender Hazel E^*; Morrison John J; Yeates Stephen G; Patchett Eifion R; Taylor D Martin

来源：Organic Electronics, 2016, 31: 90-97.

DOI：10.1016/j.orgel.2016.01.024

• Vapour jet
• DNTT
• Organic transistors
• Surface functionalization

Roll-to-roll (R2R) production of organic transistors and circuits require patterned deposition of organic layers at high deposition rate. Here we demonstrate a vapour-jet process for the rapid deposition of the organic semiconductor dinaphtho[2,3-b: 2',3'-f]thieno[3,2-b]thiophene (DNTT). The deposition rate achieved, equivalent to similar to 200 nm/s onto a stationary substrate, was several orders of magnitude faster than ordinary thermal evaporation. Nevertheless, transistor yield was 100% with an average mobility of 0.4 cm(2)/V in a single pass deposition onto a substrate moving at 0.15 m/min. We also demonstrate a vacuum, high rate R2R-compatible process for surface-functionalising a gate dielectric layer with lauryl acrylate which enabled an all-vacuum route to the fabrication of a five-stage ring oscillator.

• 出版日期2016-4