Transparent Conductive Electrodes from Graphene/PEDOT:PSS Hybrid Inks for Ultrathin Organic Photodetectors

Liu, Zhaoyang; Parvez, Khaled; Li, Rongjin; Dong, Renhao; Feng, Xinliang; Müllen, Kläus

doi:10.1002/adma.201403826

Cited by 265 publications

(193 citation statements)

References 52 publications

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“…By spray coating such a hybrid ink we were able to fabricate electrodes with R s of 1200 and 500 Ω ᮀ −1 with 90 and 80% transmittance, respectively. [ 64 ] Taking advantage of their excellent mechanical properties, these fi lms have been successfully integrated into ultrathin organic photodetectors that performed comparably to state-of-the-art Si-based inorganic photodetectors (Figure 3 d). [ 64 ] On the other hand, EEG with a comparably high oxygenated degree may not be the perfect choice for transparent conductive fi lms, but deposited onto ITO substrates they have shown promising performance as sensors for nucleic acids with low detection limits and high sensitivity, reusability, and stability.…”

Section: Research Newsmentioning

confidence: 97%

“…[ 64 ] Taking advantage of their excellent mechanical properties, these fi lms have been successfully integrated into ultrathin organic photodetectors that performed comparably to state-of-the-art Si-based inorganic photodetectors (Figure 3 d). [ 64 ] On the other hand, EEG with a comparably high oxygenated degree may not be the perfect choice for transparent conductive fi lms, but deposited onto ITO substrates they have shown promising performance as sensors for nucleic acids with low detection limits and high sensitivity, reusability, and stability. [ 65 ] Apart from the application of EEG in conductive fi lms, EEG has been recently demonstrated as a stable saturable absorber and mode-locker for fi ber lasers.…”

Section: Research Newsmentioning

confidence: 97%

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New‐Generation Graphene from Electrochemical Approaches: Production and Applications

et al. 2016

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Extensive research suggests a bright future for the graphene market. However, for a long time there has been a huge gap between laboratory-scale research and commercial application due to the challenging task of reproducible bulk production of high-quality graphene at low cost. Electrochemical exfoliation of graphite has emerged as a promising wet chemical method with advantages such as upscalability, solution processability and eco-friendliness. Recent progress in the electrochemical exfoliation of graphite and prospects for the application of exfoliated graphene, mainly in the fields of composites, electronics, energy storage and conversion are discussed.

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Section: Research Newsmentioning

confidence: 97%

Section: Research Newsmentioning

confidence: 97%

New‐Generation Graphene from Electrochemical Approaches: Production and Applications

et al. 2016

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“…In organic devices such as photovoltaics [7][8][9][10], photodetectors [11,12], and lightemitting diodes [13,14], single-layer and few-layer graphene have replaced the commonly used indium tin oxide as the conducting electrode because of its superior mechanical, electronic, and optical properties. Previous works focus on balancing the transparency and the sheet resistance of graphene by varying the layer number [15] or on controlling the electronic properties by molecular doping (ground-state charge transfer) [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Interlayer Coupling on Ultrafast Charge Transfer from Semiconducting Molecules to Mono- and Bilayer Graphene

Wang

Caraiani

et al. 2015

Phys. Rev. Applied

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Graphene is used as flexible electrodes in various optoelectronic devices. In these applications, ultrafast charge transfer from semiconducting light absorbers to graphene can impact the overall device performance. Here, we propose a mechanism in which the charge-transfer rate can be controlled by varying the number of graphene layers and their stacking. Using an organic semiconducting molecule as a light absorber, the charge-transfer rate to graphene is measured by using time-resolved photoemission spectroscopy. Compared to graphite, the charge transfer to monolayer graphene is about 2 times slower. Surprisingly, the charge transfer to A-B-stacked bilayer graphene is slower than that to both monolayer graphene and graphite. This anomalous behavior disappears when the two graphene layers are randomly stacked. The observation is explained by a charge-transfer model that accounts for the band-structure difference in mono-and bilayer graphene, which predicts that the charge-transfer rate depends nonintuitively on both the layer number and stacking of graphene.

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“…For comparison, Figure 2 shows the resistances of similar strips printed out from a composite ink prepared from graphene and PEDOT:PSS (Poly(3,4-ethylenedioxythiophene):poly (styrenesulfonic acid)). The use of an additive of PEDOT:PSS, the most conducting polymer [14,15], solves a number of problems related with solution stability, nozzle clogging, and printed-layer drying. Stability of the properties of printed graphene:PEDOT:PSS structures deteriorated in comparison with the stability of printed graphene layers; yet, it substantially improved in comparison with the stability of PEDOT:PSS [14].…”

Section: Preparation Of Graphene Suspensionsmentioning

confidence: 99%

Graphene/Fluorinated Graphene Systems for a Wide Spectrum of Electronics Application

Antonova¹,

Ia²,

Kurkina³

et al. 2017

J Material Sci Eng

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Heterostructures prepared from graphene and fluorographene (FG) using the technology of 2D printing on solid and flexible substrates were fabricated and studied. Excellent stability of printed graphene layers and, to a lesser degree, composite graphene:PEDOT:PSS layers were shown. Extraordinary properties of FG as an insulating layer for graphene-based heterostructures at fluorination degree above 30% were demonstrated. It is shown that the leakage current in thin (20-40 nm) films is normally smaller than 10 -8 A/cm 2 , the breakdown field being greater than 10 8 V/cm. In hybrid structures with printed FG layers in which graphene was transferred onto, or capsulated with, an FG layer, an increase in charge-carrier mobility and material conductivity amounting to 5-6 times was observed. The spectrum of future applications of FG layers can be further extended due to the possibility of obtaining, from weakly fluorinated graphene (<20%), functional layers exhibiting a negative differential resistance behavior and, at fluorination degrees of 20-23%, field-effect-transistor channels with current modulation reaching several orders. Composite or bilayer films based on fluorographene and V 2 O 5 or polyvinyl alcohol exhibit a stable resistive switching behavior. On the whole, graphene/FG heterostructures enjoy huge potential for their use in a wide spectrum of application, including flexible electronics.

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Transparent Conductive Electrodes from Graphene/PEDOT:PSS Hybrid Inks for Ultrathin Organic Photodetectors

Cited by 265 publications

References 52 publications

New‐Generation Graphene from Electrochemical Approaches: Production and Applications

New‐Generation Graphene from Electrochemical Approaches: Production and Applications

Effect of Interlayer Coupling on Ultrafast Charge Transfer from Semiconducting Molecules to Mono- and Bilayer Graphene

Graphene/Fluorinated Graphene Systems for a Wide Spectrum of Electronics Application

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