PEDOT:PSS films with significantly enhanced conductivities induced by preferential solvation with cosolvents and their application in polymer photovoltaic cells

Xia, Yijie; Ouyang, Jianyong

doi:10.1039/c0jm04177g

Cited by 434 publications

(335 citation statements)

References 56 publications

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“…This would operate by separating holes into the p-type material and leveraging the improved transport in this region to move the holes majority of the distance to the front contact. If the transport length in the p-type material were long enough (PEDOT:PSS has reached similar conductivities as indium−tin-oxide [a common TCO material] recently 35 ), the front transparent contact could optionally be replaced by a simple sparse metal grid, as in c-Si devices.…”

Section: ■ Introductionmentioning

confidence: 99%

Nanohole Structuring for Improved Performance of Hydrogenated Amorphous Silicon Photovoltaics

Johlin

Al-Obeidi

Nogay

et al. 2016

ACS Appl. Mater. Interfaces

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While low hole mobilities limit the current collection and efficiency of hydrogenated amorphous silicon (aSi:H) photovoltaic devices, attempts to improve mobility of the material directly have stagnated. Herein, we explore a method of utilizing nanostructuring of a-Si:H devices to allow for improved hole collection in thick absorber layers. This is achieved by etching an array of 150 nm diameter holes into intrinsic a-Si:H and then coating the structured material with ptype a-Si:H and a conformal zinc oxide transparent conducting layer. The inclusion of these nanoholes yields relative power conversion efficiency (PCE) increases of ∼45%, from 7.2 to 10.4% PCE for small area devices. Comparisons of optical properties, time-of-flight mobility measurements, and internal quantum efficiency spectra indicate this efficiency is indeed likely occurring from an improved collection pathway provided by the nanostructuring of the devices. Finally, we estimate that through modest optimizations of the design and fabrication, PCEs of beyond 13% should be obtainable for similar devices.

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Section: ■ Introductionmentioning

confidence: 99%

Nanohole Structuring for Improved Performance of Hydrogenated Amorphous Silicon Photovoltaics

Johlin

Al-Obeidi

Nogay

et al. 2016

ACS Appl. Mater. Interfaces

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“…Removal of PSSH chains results in conductive PEDOT rich film. Furthermore, the removal of PSSH chains can induce the conformational change of PEDOT chains from a coil structure to an extended coil structure [75].…”

Section: Electrical Conductivity Of Tailored Pedot:pss Htlsmentioning

confidence: 99%

A Review on Tailoring PEDOT:PSS Layer for Improved Performance of Perovskite Solar Cells

Reza¹,

Mabrouk²,

Qiao³

2018

Proc. Nat. Res. Soc.

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Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) is the most commonly used hole transport layer (HTL) in inverted (p-i-n) structured perovskite solar cells (PSCs) due to remarkable transparency and conductivity. Despite high transparency and conductivity, PEDOT:PSS has some concealed problems such as acidity, hygroscopic nature, lower work function than the ionization potential of perovskite, and poor electron blocking capability. All these properties hinder the efficient charge extraction and transport from perovskite absorber to ITO. In addition, acidic and hygroscopic nature of PEDOT:PSS can corrode the ITO electrode and degrade the moisture sensitive PSK layer, respectively. These can degrade the long-term stability and lower the performance of PSCs. Therefore, tailoring PEDOT:PSS HTL is essential for achieving highly efficient PSCs to mitigate these drawbacks. This review article gives an overview of approaches tailoring PEDOT:PSS that can minimize the limitations as HTL to improve the performance of PSCs. These include solvent treatment, composite structure, doping, and bi-layer structure PEDOT:PSS. In addition, the roles of tailored PEDOT:PSS HTL was understood in perovskite solar cells.

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“…Conducting polymers (CPs) have attracted increasing attention over past decades due to their unique combinations of chemical and physical properties from metallic and polymeric materials, including mobile charged species and a flexible and tunable matrix [1][2][3][4][5][6][7][8][9][10][11][12] . Compared with carbon-based nanomaterials, for example, carbon nanotubes, graphene, and nanowires, CPs offer higher flexibility and greater tunability in the material properties 3,4 .…”

Section: Introductionmentioning

confidence: 99%

“…Compared with carbon-based nanomaterials, for example, carbon nanotubes, graphene, and nanowires, CPs offer higher flexibility and greater tunability in the material properties 3,4 . In particular, as a highly researched CP, poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS) has been recently extended to various applications, such as optoelectronics 5 , thin-film transistors 6 , transparent electrodes 7 , super-capacitors 8 , surfaces for cell cultures 9 , tissue engineering 10 , biosignal recording 11 , and solar cells 12 , due to its high conductivity, optical transparency, mechanical flexibility, excellent biocompatibility, and low-cost manufacturability. To establish an aqueous dispersion of PEDOT, PSS is introduced to balance the positively charged PEDOT backbone.…”

Section: Introductionmentioning

confidence: 99%

Photopatternable PEDOT:PSS/PEG hybrid thin film with moisture stability and sensitivity

Zhu

Yang

et al. 2017

Microsyst Nanoeng

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Degradation and delamination resulting from environmental humidity have been technically challenging for poly (3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) thin-film processing. To overcome this problem, we introduced a one-step photolithographic method to both pattern and link a PEDOT:PSS film onto a poly (ethylene glycol) (PEG) layer as a hybrid thin film structure on a flexible substrate. This film exhibited excellent long-term moisture stability (more than 10 days) and lithographic resolution (as low as 2 μm). Mechanical characterizations were performed, including both stretching and bending tests, which illustrated the strong adhesion present between the PEDOT:PSS and PEG layers as well as between the hybrid thin film and substrate. Moreover, the hybrid moisture-absorbable film showed a quick response of its permittivity to environmental humidity variations, in which the patterned PEDOT:PSS layer served as an electrode and the PEG layer as a moisture-sensing element. Perspiration tracking over various parts of the body surface as well as breath rate measurement under the nose were successfully carried out as demonstrations, which illustrated the potential utility of this stable hybrid thin film for emerging flexible and wearable electronic applications.

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PEDOT:PSS films with significantly enhanced conductivities induced by preferential solvation with cosolvents and their application in polymer photovoltaic cells

Cited by 434 publications

References 56 publications

Nanohole Structuring for Improved Performance of Hydrogenated Amorphous Silicon Photovoltaics

Nanohole Structuring for Improved Performance of Hydrogenated Amorphous Silicon Photovoltaics

A Review on Tailoring PEDOT:PSS Layer for Improved Performance of Perovskite Solar Cells

Photopatternable PEDOT:PSS/PEG hybrid thin film with moisture stability and sensitivity

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