Untitled

Quantitative in-situ EPR spectroelectrochemical studies of doping processes in poly(3,4-alkylenedioxythiophene)s

“…Continuing growth of polaron population, together with the appearance of bipolarons in their environment, intensifies mutual interactions between all charge carrying species resulting in an almost linear increase of EPR signal linewidth of both groups of paramagnetic centres onward from 0.06 [e − /mer] doping level. This increase can be attributed to increasing dipolar interactions of polaronic spins within their growing population as well as the emergence of exchange interactions which, in spite of bipolarons' presence, can still take place intermolecularly [16,46]. Linewidths of both component lines increase up to ca.…”

Photoelectrical, optical, and transport properties of poly (3-hexylthiophene)-zinc sulfide hybrid nanocomposites

“…5 The composites of P3HT with cadmimum compounds like CdS and 10 CdTe 9 are thoroughly investigated but not much attention has been paid to Zinc based compounds like ZnS, ZnSe, etc. [11][12][13][14][15][16][17] Zinc sulphide (ZnS) is an n-type semiconductor with wide band gap (3.7 eV), having many properties appropriate for various applications such as ultraviolet opto-electronic devices, transparent high power and high frequency electronic devices, piezoelectronic transducers and chemical gas sensors, solar cell, etc. [18][19][20] For further enhancement of electro-optical properties of P3HT, we have prepared the nanocomposites 21,22 of P3HT with ZnS and have investigated the electrical and optical properties.…”

In‐situ Apparent Mobility of Charge Carriers in Polyaniline Films Measured with a New Four‐band Electrode

“…Therefore the variation of the apparent mobility will provide information to facilitate the study of the conduction mechanism. However, up to now all the measurements of apparent mobilities by the above electrochemical technique are carried out with two-band electrodes, [6][7][8]13 which is difficult to eliminate the influence of contact resistance. In our insight, four-probe method has not been applied in this new electrochemical technique to measure in-situ apparent mobility.…”

“…In recent years, an electrochemical technique on the basis of two-probe method was successfully developed to measure the in-situ mobility under different doping potentials. [6][7][8]13 Thus measured mobilities are apparent mobilities since the evaluation is based on a single-carrier model. The apparent mobility of charge carriers in a polymer film will vary if the sort of charge carriers changes as the oxidation state of the polymer proceeds.…”