Conductive channel formation for enhanced electrical conductivity of PEDOT:PSS with high work-function

Song, Inho; Park, Na Yeon; Jeong, Gwan Seung; Kang, J. H.; Seo, Jung Hwa; Choi, Jinhyeok

doi:10.1016/j.apsusc.2020.147176

Cited by 55 publications

(46 citation statements)

References 57 publications

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“…In other words, the addition of HQ also ensures that PSS is more uniformly distributed, rather than being present in excess near the top surface because of the formation of a PSS-rich top layer. This indicates that the addition of HQ increases the amount of PSS that is present at the Si/PEDOT:PSS interface [56]. The increased presence of PSS with its high W.F.…”

Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 90%

“…This report introduces our novel approach to fabricate Si/PEDOT:PSS HSCs that utilize the proton-donating agent, HQ, to increase the conductivity (σ) of PEDOT:PSS [56]. Based on this report, various amounts of HQ were mixed with the pristine PEDOT:PSS solution to investigate the optimal amount of HQ that would most improve the performance of the HSCs.…”

Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 99%

“…However, with 1.0 wt% HQ, a conductivity decrease to 672.3 S/cm was observed. This degradation with excess HQ was most probably caused by the limited HQ solubility in PEDOT:PSS solution which induced a weakened proton-donating effect that resulted in less PSSH formation [56]. The relationship between the HQ content and the performance of the fabricated HSCs was investigated by fabricating Si/HQ-PEDOT:PSS HSCs that contain various amounts of HQ, as shown in Figure 3.…”

Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 99%

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Photovoltaic Device Application of a Hydroquinone-Modified Conductive Polymer and Dual-Functional Molecular Si Surface Passivation Technology

Park

Jeong

et al. 2022

Polymers

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In the last decades, the conductive polymer PEDOT:PSS has been introduced in Si-based hybrid solar cells, gaining noticeable research interest and being considered a promising candidate for next generation solar cells which can achieve both of low manufacturing cost and high power conversion efficiency. This study succeeded in improving the electrical conductivity of PEDOT:PSS to 937 S/cm through a simple process of adding hydroquinone (HQ) to the pristine PEDOT:PSS solution. The results also showed that the addition of HQ to PEDOT:PSS(HQ-PEDOT:PSS) could not only dramatically improve the conductivity but also well-sustain the work function characteristics of PEDOT:PSS by promoting the formation of more continuous conductive-PEDOT channels without removing the insulating PSS. In this report, we reveal that the application of the HQ-PEDOT:PSS to the Si/PEDOT:PSS HSC could significantly improve the short-circuit current and open-circuit voltage characteristics to increase the power conversion efficiency of the HSCs compared to the conventional approaches. Moreover, we also treated the Si surface with the organic monomer, benzoquinone (BQ) to (1) passivate the excess Si surface defect states and (2) to improve the properties of the Si/PEDOT:PSS interface. We show that BQ treatment is able to dramatically increase the minority carrier lifetime induced by effective chemical and field-effect passivation in addition to enhancing the wettability of the Si surface with the PEDOT:PSS solution. As a result, the power conversion efficiency was increased by 10.6% by introducing HQ and BQ into the fabrication process of the Si/PEDOT:PSS HSC.

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Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 90%

Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 99%

Section: Fabrication Of Si/pedot:pss Heterojunction Solar Cells (Hscs)mentioning

confidence: 99%

See 1 more Smart Citation

Photovoltaic Device Application of a Hydroquinone-Modified Conductive Polymer and Dual-Functional Molecular Si Surface Passivation Technology

Park

Jeong

et al. 2022

Polymers

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“…12,13 Similar red shift was observed by Song and coworkers when using the PSS: PEDOT system. 14 It was explained that the red shift occurred as a result from the phase separation between PSS and PEDOT where the stacking interaction was intensified. The intensification induced delocalized electrons across the π-π orbitals where the energy band gap was decreased.…”

Section: Optical Properties and Ph Responsementioning

confidence: 99%

“…The intensification induced delocalized electrons across the π-π orbitals where the energy band gap was decreased. 14 The UV-vis spectra shift reflecting the change in pH conditions are compiled for both types of stoichiometry in Figure 4. For both types of membranes, the absorption peak shifted to higher energy (lower wavelength) when the deprotonation of the ANI occurred and the color changed from green to purple as expected.…”

Section: Optical Properties and Ph Responsementioning

confidence: 99%

In‐situ polymerization of polyaniline in PDADMAC/PSS complex membranes: Effect of the polyelectrolyte stoichiometry

Luangaramvej

Wijitsettakun

Plengplug

et al. 2021

J of Applied Polymer Sci

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The direct polymerization of a polymer in a polyelectrolyte complex membrane is a quick and simple method to enhance the properties and add functionality to a pre‐formed membrane. Here, polyelectrolyte complex membrane (PECs) of poly (diallyl dimethyl ammonium chloride) (PDADMAC) [P+] and poly (styrene sulfonate) [P−] were modified by the in‐situ polymerization of aniline monomer into polyaniline (PANI). The initial PECs were prepared by the co‐precipitation of polyelectrolytes with various [P+]: [P−] molar ratio and were formed into 100 micron thin membranes by compression molding. The in‐situ polymerization of PANI was achieved by sequential dipping of the PECs in ammonium peroxydisulfate solution to load the oxidant and in the aniline monomer solution to initiate the polymerization. Both the polyelectrolyte stoichiometry and the NaCl concentration used during the formation of the complex were found to have a profound effect on the polymerization reaction. UV–visible spectroscopy, X‐ray diffraction, and infrared spectroscopy were used to characterize the changes in color of the PANI membranes and to confirm the synthesis of PANI. Scanning electron microscopy revealed the presence of a dense coating of PANI at the surface of the PEC.

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Preparation of Short Carbon Fiber/Polydimethylsiloxane Conductive Composites Based on Continuous Spatial‐Confining Network Assembly Technique

Li,

Jiang

et al. 2023

Adv Eng Mater

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With the development of electronic devices, conductive composites are receiving more and more attention, the demand for electrically conductive composites (ECC) is also increasing. However, the existing preparation process does not allow for the continuous preparation of electrically conductive composites. Therefore, we report a continuous spatial‐confining network assembly (CSNA) technique method to achieve an efficient and controllable preparation of electrically conductive composites. Short carbon fiber (SCF) and polydimethylsiloxane (PDMS) are used as conductive fillers and polymer matrix to prepare conductive composites, and the filler content of the prepared composites is 6 wt%. The electrical conductivity of the PDMS/SCF conductive composite is 73.72 S m−1, when flexible roll with a Shore hardness of 12.5 A and a roll pressure of 126 N is used. The effect of increasing pressure, the higher the number of rolls and the roll speed on the electrical properties of the composite, is also investigated. To sum up, the PDMS/SCF composite prepared by this preparation method is expected to achieve continuous production and application in medical, biological, thermal management, etc.

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Conductive channel formation for enhanced electrical conductivity of PEDOT:PSS with high work-function

Cited by 55 publications

References 57 publications

Photovoltaic Device Application of a Hydroquinone-Modified Conductive Polymer and Dual-Functional Molecular Si Surface Passivation Technology

Photovoltaic Device Application of a Hydroquinone-Modified Conductive Polymer and Dual-Functional Molecular Si Surface Passivation Technology

In‐situ polymerization of polyaniline in PDADMAC/PSS complex membranes: Effect of the polyelectrolyte stoichiometry

Preparation of Short Carbon Fiber/Polydimethylsiloxane Conductive Composites Based on Continuous Spatial‐Confining Network Assembly Technique

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