Patterning quality control of inkjet printed PEDOT:PSS films by wetting properties

Ely, Fernando; Avellaneda, César O.; Paredez, P.; Nogueira, Verónica; Santos, Thebano E. A.; Mammana, Victor Pellegrini; Molina, C.; Brug, J. A.; Gibson, Gary A. P.; Zhao, Lihua

doi:10.1016/j.synthmet.2011.08.014

Cited by 37 publications

(22 citation statements)

References 17 publications

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“…The use of self‐assembled monolayer (SAM) is an alternative method to adjust the surface wettability by the modification of the substrates with proper surface free energy. For example, the quality of the printed PEDOT:PSS patterns can be controlled by the fine tuning of the surface wetting properties using (3‐aminopropyl)triethoxy silane . Ink's spreading was controlled by the SAM, attributed to the decreased surface free energy relative to the pristine surface.…”

Section: Substrate Treatmentmentioning

confidence: 99%

Printable Transparent Conductive Films for Flexible Electronics

et al. 2018

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Printed electronics are an important enabling technology for the development of low-cost, large-area, and flexible optoelectronic devices. Transparent conductive films (TCFs) made from solution-processable transparent conductive materials, such as metal nanoparticles/nanowires, carbon nanotubes, graphene, and conductive polymers, can simultaneously exhibit high mechanical flexibility, low cost, and better photoelectric properties compared to the commonly used sputtered indium-tin-oxide-based TCFs, and are thus receiving great attention. This Review summarizes recent advances of large-area flexible TCFs enabled by several roll-to-roll-compatible printed techniques including inkjet printing, screen printing, offset printing, and gravure printing using the emerging transparent conductive materials. The preparation of TCFs including ink formulation, substrate treatment, patterning, and postprocessing, and their potential applications in solar cells, organic light-emitting diodes, and touch panels are discussed in detail. The rational combination of a variety of printed techniques with emerging transparent conductive materials is believed to extend the opportunities for the development of printed electronics within the realm of flexible electronics and beyond.

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Section: Substrate Treatmentmentioning

confidence: 99%

Printable Transparent Conductive Films for Flexible Electronics

et al. 2018

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“…46,47 The good solubility of PEDOT:PSS allows for processing using a variety of techniques including spin-coating, 48 ink-jet printing 49 and dip-coating. 50 By aligning the PEDOT:PSS during the film deposition, conductivities can be further improved to 4,600 S.cm −1 .…”

Section: P-type Organic Thermoelectric Materialsmentioning

confidence: 99%

Review—Organic Materials for Thermoelectric Energy Generation

Cowen

Atoyo

Carnie

et al. 2017

ECS J. Solid State Sci. Technol.

129

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Organic semiconductor materials have been promising alternatives to their inorganic counterparts in several electronic applications such as solar cells, light emitting diodes, field effect transistors as well as thermoelectric generators. Their low cost, light weight and flexibility make them appealing in future applications such as foldable electronics and wearable circuits using printing techniques. In this report, we present a mini-review on the organic materials that have been used for thermoelectric energy generation. The reduction in the effects of climate change, caused by the burning of fossil fuels, has recently been given increased emphasis by major world governments and it is therefore necessary to consider the efficiency of the methods we currently use to generate energy. It has previously been estimated that 63% of global energy consumption is wasted with the major form of this waste being heat.1,2 It is therefore important to develop methods of reconverting this wasted heat back in to useful forms of energy, such as electricity.Thermoelectric generators (TEG) are a promising technology which make use of a process known as the Seebeck effect for heat recovery. The Seebeck effect can be described as two dissimilar conductors or semiconductors connected thermally in parallel and electrically in series and exposed to a temperature gradient causing a difference in voltage between the two materials.3,4 In a TEG one p-type and one ntype semiconductor make use of the Seebeck effect by connecting one to the other electrically in series and thermally in parallel; a general device setup is shown in Figure 1. By connecting the two components, by a junction which is heated, the n-type component of the device transports electrons from the hot junction to a heat sink while the p-type material transports positively charged holes along the same direction of the temperature gradient. The reverse is also possible if the holes and electrons flow away from a cold connecting junction to a heated point at the end of each semiconductor, this induces a constant cooling at the junction through the Peltier effect. 4,5The quantification of the Seebeck effect, in a specific material, is given by the Seebeck coefficient, α, and is the open circuit voltage of a material subjected to a temperature gradient, commonly with units on the scale of μVK −1 to mVK −1 . 6 A materials overall efficiency in the conversion of heat to electricity is given by the dimensionless figure of merit, ZT, defined as,where σ is the electrical conductivity and κ is the thermal conductivity. [6][7][8] It is therefore necessary for thermoelectric materials to have a high electrical conductivity and a low thermal conductivity making electrically conducting metals inappropriate for thermoelectric applications due to their high thermal conductivities and low z E-mail: m.j.carnie@swansea.ac.uk; derya.baran@kaust.edu.sa; b.c.schroeder@qmul .ac.uk Seebeck coefficients. The ideal thermoelectric materials should be an electrical crystal to maximize σ and at the s...

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“…[23][24][25][26][27][28] Rare works have focused on morphology control of inkjet printed PEDOT lms. 29,30 Thickness and lm uniformity of inkjet printed PEDOT lms is very important in ensuring the quality of the next deposited organic light emitting lms beyond PEDOT lms and the performance of printed O/PLEDs.…”

Section: Introductionmentioning

confidence: 99%