Dicyanovinyl-substituted indolo[3,2-b]indole derivatives: low-band-gap π-conjugated molecules for a single-component ambipolar organic field-effect transistor

2016 ◽  
Vol 4 (40) ◽  
pp. 9460-9468 ◽  
Author(s):  
Illhun Cho ◽  
Sang Kyu Park ◽  
Boseok Kang ◽  
Jong Won Chung ◽  
Jin Hong Kim ◽  
...  

Via the cooperative effects of intramolecular charge transfer interactions and extension of conjugation, low-band gap organic semiconductors have successfully been prepared.

2016 ◽  
Author(s):  
Penchalaiah Palla ◽  
Durgesh Laxman Tiwari ◽  
Hasan Raza Ansari ◽  
Taraprasanna Saha Babu ◽  
Anita Sagadevan Ethiraj ◽  
...  

MRS Advances ◽  
2017 ◽  
Vol 2 (23) ◽  
pp. 1249-1257 ◽  
Author(s):  
F. Michael Sawatzki ◽  
Alrun A. Hauke ◽  
Duy Hai Doan ◽  
Peter Formanek ◽  
Daniel Kasemann ◽  
...  

ABSTRACTTo benefit from the many advantages of organic semiconductors like flexibility, transparency, and small thickness, electronic devices should be entirely made from organic materials. This means, additionally to organic LEDs, organic solar cells, and organic sensors, we need organic transistors to amplify, process, and control signals and electrical power. The standard lateral organic field effect transistor (OFET) does not offer the necessary performance for many of these applications. One promising candidate for solving this problem is the vertical organic field effect transistor (VOFET). In addition to the altered structure of the electrodes, the VOFET has one additional part compared to the OFET – the source-insulator. However, the influence of the used material, the size, and geometry of this insulator on the behavior of the transistor has not yet been examined. We investigate key-parameters of the VOFET with different source insulator materials and geometries. We also present transmission electron microscopy (TEM) images of the edge area. Additionally, we investigate the charge transport in such devices using drift-diffusion simulations and the concept of a vertical organic light emitting transistor (VOLET). The VOLET is a VOFET with an embedded OLED. It allows the tracking of the local current density by measuring the light intensity distribution.We show that the insulator material and thickness only have a small influence on the performance, while there is a strong impact by the insulator geometry – mainly the overlap of the insulator into the channel. By tuning this overlap, on/off-ratios of 9x105 without contact doping are possible.


2021 ◽  
Author(s):  
Suman Yadav ◽  
Shivani Sharma ◽  
Satinder K Sharma ◽  
Chullikkattil P. Pradeep

Solution-processable organic semiconductors capable of functioning at low operating voltages (~5 V) are in demand for organic field-effect transistor (OFET) applications. Exploration of new classes of compounds as organic thin-film...


2016 ◽  
Vol 4 (37) ◽  
pp. 8758-8764 ◽  
Author(s):  
Gaole Dai ◽  
Jingjing Chang ◽  
Linzhi Jing ◽  
Chunyan Chi

Two diacenopentalene dicarboximides were synthesized, and their devices made with solution-processing technique exhibited n-type field-effect transistor behavior with electron mobility of up to 0.06 cm2 V−1 s−1.


Nano Letters ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 3981-3986 ◽  
Author(s):  
Charlie Gréboval ◽  
Ulrich Noumbe ◽  
Nicolas Goubet ◽  
Clément Livache ◽  
Julien Ramade ◽  
...  

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