2023年6月14日 · These XPS measurements show that oxidizing PBTTT with 50 mM FeCl 3 results in an increased signal at higher binding energies with respect to the pristine and neutral S-2p 3/2 signal.

2022年2月14日 · Here, we identify two methods: X-ray photoemission spectroscopy (XPS) and quantitative nuclear magnetic resonance (QNMR), both of which enable direct quantification of the TFSI ion density in PBTTT. XPS allows us to characterize the atomic species present near the film surface because the ratio of peak integrals for a given transition are ...

2022年7月14日 · We present nanodisks of PBTTT semiconducting polymer doped with a dicationic salt, enabling a high doping level of around 0.8 charges per monomer, and demonstrate that they can be used as...

2024年5月15日 · X-ray photoelectron spectroscopy (XPS) shows that TFSI – anions do not penetrate the PBTTT layer without Acr-Me + or with Acr-Me + in the dark.

To quantify the doping concentrations X-ray photoemission spectroscopy (XPS) has previously been identified as one of the most accurate methods. Both TFSI and PBTTT contain sulfur atoms with a clearly resolved chemical shift, which allows quantifying the molar ratio of TFSI to PBTTT from peak fitting of the S 2p signal (Figure 2d–f). Before ...

2022年10月20日 · In this study, the electronic properties of organic–inorganic hybrid semiconducting polymers, synthesized via in situ controlled vapor phase infiltration (VPI) of poly [2,5-bis (3-tetradecylthiophen-2-yl)thieno [3,2-b]thiophene] (PBTTT-C14) with the metal precursors molybdenum pentachloride (MoCl 5) and titanium tetrachloride (TiCl 4), were alte...

2023年10月11日 · The anion species in the doped PBTTT thin films were determined by X-ray photoelectron spectroscopy (XPS) measurements (Fig. 3). The PBTTT thin films were immersed in aqueous solutions with...

A thin layer of polyacrylic acid (PAA) was spin-coated directly onto the PBTTT surface and then carboxyl functional group was generated by the UV-assisted cross-linking process to bind with ...

(a) XPS spectra (counts per second, cps vs. binding energy, B.E.) for pristine, irradiated and irradiated/annealed P3HT and PBTTT films (thickness ~80 nm) on silicon/silicon oxide substrates,...

2023年8月15日 · To elucidate the doping mechanism of TPS-TF with UV irradiation, X-ray photoelectron spectroscopy (XPS) analysis, which allows the characterization of both the elemental composition and chemical bonds of the polymer films, was performed on three types of PBTTT films: pristine PBTTT, UV-unexposed PBTTT/TPS-TF …