The effect of solvents and organic acids on the p-doping behaviors of poly(3′,4′-Ethylenedioxy-2,2′:5′,2″-terthiophene)

Abdiryim, Tursun; Chunbao, Zhao; Jamal, Ruxangul; Ubul, Aminam; Shi, Wei; Nurulla, Ismayil

doi:10.1134/s1560090412070019

Cited by 10 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the polymers exhibit similar absorption profiles with the absorption maxima at 478 nm, which are attributed to the π–π* transition of polymer backbone. The broad absorption tails from 540 to 900 nm with the peaks at approximately 805 nm are ascribed to polaronic transition (λ polaron ), − revealing the self-doping effect of the five polymers. Moreover, the fraction of the polaronic transition to π–π* transition gradually increases by the order of PCP-Cs, -K, -Na, -Li, and -H, indicating that the self-doping effect is enhanced by reducing the radius of the counterions.…”

Section: Resultsmentioning

confidence: 99%

The Critical Role of Anode Work Function in Non-Fullerene Organic Solar Cells Unveiled by Counterion-Size-Controlled Self-Doping Conjugated Polymers

et al. 2018

View full text Add to dashboard Cite

In this work, we demonstrated an effective method to modulate the p-type self-doping effect as well as the molecular energy level of an anionic conjugated polymer, namely PCP-x (x = H, Li, Na, K, Cs) by changing the counterions, and hence developed a series of anode interlayer materials for nonfullerene organic solar cells (NF-OSCs). With the decreasing cation radius, self-doping effect of PCP-x can be enhanced and hence the work function (WF) of the PCP-x-modified anodes can be tuned from 4.78 to 5.11 eV. The photovoltaic performance of NF-OSCs based on J52–2F:IT-4F active layer was significantly affected by the WF of the anodes, and a PCE of 12.8% could be achieved by using the PCP-H-modified ITO anodes. Furthermore, the PCP-x-modified anodes were used to fabricate NF-OSCs with different active layers, including PBDTTT-E-T:IEICO and PBDB-T-2F:IT-4F. It was found that the energetic offsets between WF of the anodes and ionization potential (IP) of the donors should be controlled below 0.1 eV to minimize the loss in photovoltaic performance. This work provides not only an effective method for synthesizing a series of p-type interlayer materials with tunable WF but also an insight on the critical importance of developing anode interlayer materials with high WF.

show abstract

Section: Resultsmentioning

confidence: 99%

The Critical Role of Anode Work Function in Non-Fullerene Organic Solar Cells Unveiled by Counterion-Size-Controlled Self-Doping Conjugated Polymers

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The absorptions of the three polymers are primarily located in the wavelength range from 300 to 550 nm, corresponding to the π–π* transition from the top of the valence to the bottom of the conduction band . A weak but broad peak was observed from 550 to 900 nm in the absorption of PCP-Na film, which might be ascribed to the low-energy transitions related to the polaronic states in the polymer film. − Then, electron spin resonance (EPR) measurements were performed to probe the free radical species in the polymers. As shown in Figure b, a sharp and strong signal appeared in the EPR of PCP-Na solution with a peak-to-peak width Δ H pp = 1.66 G, confirming the existence of polaronic states (radical cations) in the self-doping polymer PCP-Na.…”

Section: Resultsmentioning

confidence: 99%

A Novel pH Neutral Self-Doped Polymer for Anode Interfacial Layer in Efficient Polymer Solar Cells

Cui

Yang

et al. 2016

Macromolecules

View full text Add to dashboard Cite

Three pH neutral conjugated polymers based on thiophene and benzene derivatives, namely PCP-Na, PCF-Na, and PFS-Na, were designed and synthesized. In the three polymers, PCP-Na exhibited a self-doping effect in aqueous solution, and the thin film of PCP-Na demonstrated a high electrical conductivity of 1.66 × 10–3 S/cm and a deep HOMO level of −5.22 eV; these properties make it an ideal anode interfacial layer (AIL) material in polymer solar cells (PSCs). The single-junction PSC modified with PCP-Na AIL showed a PCE of 9.89%, which is comparable to that of the PEDOT:PSS-modified device (PCE = 9.53%). Notably, PCP-Na AIL exhibited excellent thickness insensitivity in fabricating PSC devices; i.e., the PSC devices with very thick PCP-Na interlayers over 300 nm still demonstrated a high fill factor over 70%, indicating the PCP-Na layer has excellent charge collection and transport properties. Furthermore, the homo-tandem PSC device was fabricated using a new connecting interlayer, which consists of PCP-Na as the hole collection layer and ZnO as the electron collection layer, and a PCE of 10.54% was achieved in the homo-tandem device.

show abstract

“…As shown in Figure 2 , PProDOT/TiO 2 displays a broad peak raging from ~430 nm to 610 nm with several shoulders at ~430, ~450, ~500, ~560 and ~610 nm, while the PProDOT-Me 2 /TiO 2 , poly(TPT)/TiO 2 and poly(TMPT)/TiO 2 display relatively sharp peaks raging from ~460 nm to ~610 nm with several shoulders at ~460, ~500, ~554 and ~610 nm. The absorption peaks and shoulders at ~430–560 nm are assigned to the π → π* transition of the thiophene ring [ 30 – 33 ], while the peaks at ~610 nm are the p-doping peaks of the polythiophene molecular chains [ 34 ]. Comparing with the absorption spectra of others, more shoulders appear in the PProDOT/TiO 2 nanocomposite, which can be considered as the absorption peaks arising from conjugated segments having different conjugation lengths [ 35 ].…”

Section: Ultraviolet-visible (Uv-vis) Absorption Spectramentioning

confidence: 99%

Solid-State Synthesis and Photocatalytic Activity of Polyterthiophene Derivatives/TiO2 Nanocomposites

et al. 2014

Self Cite

View full text Add to dashboard Cite

Poly(3,4-propylenedioxy-2,2′:5′,2″-terthiophene)/TiO2 and poly(3,4-(2,2-dimethylenepropylenedioxy)-2,2′:5′,2″-terthiophene)/TiO2 nanocomposites were synthesized by a simple solid-state method. Additionally, the poly(3,4-propylenedioxy thiophene)/TiO2 and poly(3,4-2,2-dimethylenepropylenedioxythiophene)/TiO2 nanocomposites were synthesized in a similar manner for comparison. The structure and morphology were characterized by Fourier transform infrared (FTIR), ultraviolet-visible (UV-Vis) absorption spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The photocatalytic activities of the nanocomposites were examined through the degradation processes of a methylene blue (MB) solution under UV light and sunlight irradiation. The results of FTIR and UV-Vis spectra showed that the composites were successfully synthesized by solid-state method and the poly(3,4-propylenedioxy-2,2′:5′,2″-terthiophene)/TiO2 and poly(3,4-(2,2-dimethylenepropylenedioxy)-2,2′:5′,2″-terthiophene)/TiO2 nanocomposite had a higher oxidation degree and conjugation length than others. The results also indicated that the TiO2 had no effect on the crystallinity of composites, but was well embedded in the polymer matrix. Additionally, the highest degradation efficiency of 90.5% occurred in the case of the poly(3,4-propylenedioxy-2,2′:5′,2″-terthiophene)/TiO2 nanocomposite.

show abstract

The effect of solvents and organic acids on the p-doping behaviors of poly(3′,4′-Ethylenedioxy-2,2′:5′,2″-terthiophene)

Cited by 10 publications

References 32 publications

The Critical Role of Anode Work Function in Non-Fullerene Organic Solar Cells Unveiled by Counterion-Size-Controlled Self-Doping Conjugated Polymers

The Critical Role of Anode Work Function in Non-Fullerene Organic Solar Cells Unveiled by Counterion-Size-Controlled Self-Doping Conjugated Polymers

A Novel pH Neutral Self-Doped Polymer for Anode Interfacial Layer in Efficient Polymer Solar Cells

Solid-State Synthesis and Photocatalytic Activity of Polyterthiophene Derivatives/TiO2 Nanocomposites

Contact Info

Product

Resources

About