Ether-soluble hole-transporting polymers based on triphenylamine/phenothiazine moieties with shallow HOMO levels

Abstract

Novel ether-soluble hole-transporting polymers with shallow HOMO levels were used as efficient electron donors of charge carrier generation layers for tandem OLEDs.

Critical analysis of self-doping and water-soluble n-type organic semiconductors: structures and mechanisms

“…17 Furthermore the use of orthogonal solvent systems facilitates device fabrication, as miscibility between dopant and semiconductor in the solid state is avoided. [18][19][20] Quaternary ammonium hydroxide moieties have been bound to rylene diimides and, upon dehydration of aqueous films, absorption spectra indicating the presence of charge carriers were recorded. 21 An ion-exchange column was used to exchange a halide precursor for the hydroxyl counterion, shown as PDI-OH in Fig.…”

The future of solution processing toward organic semiconductor devices: a substrate and integration perspective

“…To address this issue, the following methods are derived. Generally speaking, the bottom-up film patterning integration method is mainly inkjet printing, 38,96,97 while there are three top-down film patterning integration methods: (i) transfer printing; [98][99][100][101][102][103][104][105] (ii) orthogonal solvent; 40,41,[106][107][108][109][110] (iii) cross-linker post-treating. 44,45,111,112 Each of the above methods has advantages and disadvantages, which will be explained in detail below.…”

Highly electrochemically and thermally stable donor–π–acceptor triphenylamine-based hole-transporting homopolymersviaoxidative polymerization

“…[17][18][19][20][21] In comparison to similar small molecules, TPAbased polymers have better mechanical properties, thermal stability, and film-forming properties. [22][23][24][25][26][27][28][29][30][31][32] The addition of electron-withdrawing fragments into the chemical structure of TPA-based polymers makes it possible to obtain polymers having a donor-acceptor (D-A) motif and thus to tune the electronic and optical properties of the resulting materials. 8,33 The D-A strategy allows efficiently to regulate the energy of molecular orbitals, electrochemical bandgap, and absorption and emission spectra as well as to improve chargetransporting properties.…”

“…17–21 In comparison to similar small molecules, TPA-based polymers have better mechanical properties, thermal stability, and film-forming properties. 22–32…”