Regensburg 2019 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 38: Organic semiconductors
HL 38.3: Vortrag
Donnerstag, 4. April 2019, 10:00–10:15, H33
Charge transport properties of highly ordered solution processed films of C8-BTBT — •Michael Bretschneider1, Katherina Haase2, Stefan C.B. Mannsfeld2, Bernd Büchner1, and Yulia Krupskaya1 — 1IFW Dresden, Germany — 2CFAED, TU Dresden,Germany
In the field of organic electronics one has to improve device sizes and structures and find new, more efficient materials. On the other hand it is intended to enhance the device performance. For all of these tasks one needs to understand the specific material properties of organic semiconductors. In terms of device performance it is important to investigate the charge carrier mobility and find a way to increase its value. The family of [1]Benzothieno[3,2-b]benzothiophene (BTBT) is a new type of high hole mobility organic semiconductor. In this family C8-BTBT is investigated the most in the past years. Solution based fabrication methods like shear coating allow for a large area growth of highly ordered films of C8-BTBT. Recently a new record value of mobility in field-effect transistors based on that method was published (1). Beside that there are still open questions concerning charge carrier properties. For further improvement one has to understand the transport mechanisms in these organic semiconductor devices. Here we present our results based on temperature dependent field-effect and Hall-effect measurements. These measurements allow to get a closer look into the transport behaviors of solution processed C8-BTBT films.
(1)K. Haase, C. Teixeira da Rocha, C. Hauenstein, Y. Zheng, M. Hambsch, S. C. B. Mannsfeld, Adv. Electron. Mater. 2018, 4, 1800076.