Understanding the evolution of the Raman spectra of molecularly p-doped poly(3-hexylthiophene-2,5-diyl): signatures of polarons and bipolarons

Abstract

Molecular doping is a key process to increase the density of charge carriers in organic semiconductors. Doping-induced charges in polymer semiconductors result in the formation of polarons and/or bipolarons due...

Capacitors Based on Polypyrrole Nanowire Electrodeposits

“…On the other hand, it is important to note that the bands described in Table S1 are intrinsic to the PPy structure. Additionally, the ratio between the area of the polarons and bipolarons signals, as well as C=C and the sum of polaron and bipolarons, is always higher for PPy-nw modified electrodes (Table S2), as described in the literature for conductive polymers [45].…”

Transporting holes stably under iodide invasion in efficient perovskite solar cells

“…The Raman peak positions of the C=C stretching in conjugated polymers shifted to lower frequencies (Fig. 2D), indicating higher effective conjugation length and planarization of charged chains ( 21 ). The density functional theory (DFT) calculation (fig.…”

Bringing out the potential of organoboron compounds by designing the chemical bonds and spaces around boron

“…31 Very recently, highly efficient hole-doping of poly(3-hexylthiophene-2,5-diyl) (P3HT) is achieved using 1b , where not only a polaron state but also a bipolaron state is generated depending on the concentration of the dopant. 32,33…”

“…31 Very recently, highly efficient hole-doping of poly(3-hexylthiophene-2,5-diyl) (P3HT) is achieved using 1b, where not only a polaron state but also a bipolaron state is generated depending on the concentration of the dopant. 32,33 2.5 Emissive tetraaryldiborane(4) species derived from Mes 2 B + Tetraaryldiborane(4) derivatives without lone-pair donation from heteroatom substituents are expected to exhibit interesting reactivity arising from the neighboring vacant p orbitals of boron. [34][35][36][37] Power et al reported that trimesitylphenyldiborane(4) [Mes 2 B-BMes(Ph)] forms a B-B p-bond up on twoelectron reduction.…”