Effective Work Function Modulation of Graphene/Carbon Nanotube Composite Films As Transparent Cathodes for Organic Optoelectronics

Huang, Jen-Hsien; Fang, Jheng-Hao; Liu, Chung-Chun; Chu, Chih‐Wei

doi:10.1021/nn201253w

Cited by 149 publications

(116 citation statements)

References 48 publications

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“…Based on this doped rGO-SWCNT hybrid film as flexible BTE, the inverted flexible OSCs based on P3HT:PCBM showed an improved device performance with a PCE of 1.27%. [83] Moreover, sheet resistance (247 Ω sq ) of the rGO-SWCNT hybrid electrode remain unchanged after performing 60 bending cycles (244 Ω sq −1 after bending), demonstrating its excellent flexibility. In order to improve the tradeoff between transparency and conductivity of the rGO layers, Konios et al [84] constructed rGO micromesh (rGOMM) electrodes (see Figure 4c) by a femtosecond laser writing technique.…”

Section: Wwwadvenergymatdementioning

confidence: 98%

Flexible and Semitransparent Organic Solar Cells

Cui

et al. 2017

Advanced Energy Materials

612

449

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Flexible and semitransparent organic solar cells (OSCs) have been regarded as the most promising photovoltaic devices for the application of OSCs in wearable energy resources and building‐integrated photovoltaics. Therefore, the flexible and semitransparent OSCs have developed rapidly in recent years through the synergistic efforts in developing novel flexible bottom or top transparent electrodes, designing and synthesizing high performance photoactive layer and low temperature processed electrode buffer layer materials, and device architecture engineering. To date, the highest power conversion efficiencies have reached over 10% of the flexible OSCs and 7.7% with average visible transmittance of 37% for the semitransparent OSCs. Here, a comprehensive overview of recent research progresses and perspectives on the related materials and devices of the flexible and semitransparent OSCs is provided.

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Section: Wwwadvenergymatdementioning

confidence: 98%

Flexible and Semitransparent Organic Solar Cells

Cui

et al. 2017

Advanced Energy Materials

612

449

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“…151 The other strategy is bridging graphene sheets with other conducting additives, such as CNTs and CPs. 32,33,69,[152][153][154] A composite film of graphene and CNTs showed an enhanced performance of 636 X/& at T ¼ 92%, which is superior to both single-walled CNT and graphene-based TCEs. 152 Composites of graphene and CPs are also considered to have synergic effects.…”

Section: Solar Cellsmentioning

confidence: 99%

Graphene/polymer composites for energy applications

Sun

Shi

2012

J Polym Sci B Polym Phys

236

120

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Graphene has wide potential applications in energyrelated systems, mainly because of its unique atom-thick twodimensional structure, high electrical or thermal conductivity, optical transparency, great mechanical strength, inherent flexibility, and huge specific surface area. For this purpose, graphene materials are frequently blended with polymers to form composites, especially when fabricating flexible devices. Graphene/polymer composites have been explored as electrodes of supercapacitors or lithium ion batteries, counter electrodes of dye-sensitized solar cells, transparent conducting electrodes and active layers of organic solar cells, catalytic electrodes, and polymer electrolyte membranes of fuel cells. In this review, we summarize the recent advances on the synthesis and applications of graphene/polymer composites for energy applications. The challenges and prospects in this field have also been discussed. V C 2012 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 231-253 KEYWORDS: composites; energy; fuel cell; graphene; lithium ion battery; redox polymers; solar cell; supercapacitor; synthesis INTRODUCTION Energy is one of the most important recent topics of concern to human society. To replace conventional fossil fuels, clean and renewable energies based on sunlight, wind, new chemicals, and biofuels are urgently demanded. Therefore, materials that can directly convert or store renewable energies are being extensively studied. Among them, graphene has recently attracted a great deal of attention because of its unique atom-thick two-dimensional (2D) structure 1,2 and excellent electrical, 2 thermal, 3 optical, and mechanical properties. 4,5 Graphene is a promising material for applications in various energy-related systems such as supercapacitors, 6-9 secondary batteries, 10-14 solar cells, 15-17 and fuel cells. [18][19][20] For this purpose, graphene materials are frequently blended with polymers to form functional composites. [21][22][23] The polymer component can improve the processability and/or flexibility of graphene materials, and also possibly provide them with new functions. To date, various graphene composites with insulating or conducting polymers (CPs) have been prepared through noncovalent 22 or covalent approaches. 24 They have also been applied as electrodes for supercapacitors and lithium ion batteries (LIBs), 25-29 counter electrodes of dye-sensitized solar cells (DSSCs), 15,30,31 and transparent conducting electrodes (TCEs) 32,33 or active layers of organic solar cells, 34 catalytic electrodes, and polymer electrolyte membranes of fuel cells. [35][36][37] This review focuses on summarizing the recent advances in the synthesis of graphene/polymer composites and their energy applications.

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“…From inset of Fig. 4a, we can see characteristic peak (169-270 cm À1 ) originating from the SCNTs, which indicating that the electronic structure of the SCNTs was preserved in the hybrid during the fabricating process [23].…”

Section: Raman Spectra and Optical Transmission Of Hybrid Gps And Scntsmentioning

confidence: 91%