Recent advances in doped organic field-effect transistors: mechanism, influencing factors, materials, and development directions

Abstract

Generally, doping refers to mixing a dopant as the guest into a material as the host, so as to better realize and optimize the performance and function of the host...

Diketopyrrolopyrrole‐Dioxo‐Benzodithiophene‐Based Multifunctional Conjugated Polymers for Organic Field‐Effect Transistors and Perovskite Solar Cells

“…Apart from the conventional ways of improving charge carrier mobility, the addition of an external dopant to the conjugated polymer is also a promising way to improve the properties without further treatments. [46][47][48] Therefore, we used a salt-based dopant tetrabutylammonium iodide (TBAI) to improve the above results obtained after annealing. To gain deeper insight into the effect of the dopant, we used various molar ratios of polymer to dopant (48:1; 24:1, and 16:1).…”

Solution-processed ambipolar organic thin-film transistors and inverters in a single substrate through self-assembled monolayer-treated electrodes

“…8 Ambipolar OTFTs can be realised by various approaches, such as using two discrete layers of electron-and hole-transporting semiconducting materials stacked one over the other, using a single layer formed by the blend of two different (electron-and hole-transporting) organic semiconductors, and utilisation of ambipolar organic semiconductors with high electron and hole mobilities. [9][10][11][12] Among them, the use of ambipolar organic semiconductors is the most favourable approach because of its simple architecture consisting of a single-component ambipolar semiconductor for the manufacturing of complementary metal-oxide-semiconductor (CMOS)-like logic gates and circuits with low power consumption and high noise margins. [13][14][15] To simplify the device fabrication process, recently, solution-processable ambipolar polymer semiconductors with alternating electron donoracceptor (DA)-type repeating units have been employed as a single-component semiconductor of OTFTs, such as poly[(E)-2,7-bis(2-decyltetradecyl)-4-methyl-9-(5-(2-(5-methylthiophen-2yl)vinyl)thiophen-2-yl)benzo[lmn] [3,8] phenanthroline-1,3,6,8 (2H,7H)-tetraone] (PNDI-TVT), poly[(E)-2,7-bis(2-decyltetradecyl)-4-methyl-9-(5-(2-(5-methylselenophen-2-yl)vinyl)selenophen-2-yl) benzo[lmn] [3,8] phenanthroline-1,3,6,8(2H,7H)-tetraone] (PNDI-SVS), and diketopyrrolopyrrolethieno [3,2-b]-thiophene (DPP-T-TT).…”

Recent progress on radiofluorination using metals: strategies for generation of C–18F bonds

“…Carbon-fluorine bond formation is an important research topic in organic synthesis because of the widespread applications of organofluorine compounds in pharmaceuticals, agricultural applications, and materials science. [1][2][3][4][5][6][7] The insertion of a fluorine atom in a drug molecule can alter its physical, chemical, and biological properties. Furthermore, these alterations can also importantly affect drug metabolism and pharmacokinetics.…”