Microwave-reduced graphene oxide for efficient and stable hole extraction layers of polymer solar cells

Kim, Namhun; Xin, Guoqing; Cho, Sung Min; Pang, Changhyun; Chae, Heeyeop

doi:10.1016/j.cap.2015.05.011

Cited by 18 publications

(12 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, Lee et al reduced the hygroscopic and acidic nature of PEDOT:PSS by using a condensation reaction between the PSS group in the PEDOT:PSS and –OH group in poly(ethylene glycol) methyl ether and thereby realized air‐stable OSCs . A different method to enhance the interface stability of OSCs under ambient air conditions is to use hydrophobic IFLs, such as 2D carbon materials (e.g., GR and GO), as reported by several different research groups . The hydrophobicity of solution‐processable reduced GO used as an alternative to PEDOT:PSS can improve the device lifetime of OSCs, as shown by Yun et al Similarly, Kim et al showed that microwave‐reduced GO layers have excellent passivation properties against oxygen and moisture, which conserves the device performance (88% of the initial PCE) even under ambient conditions for 1000 h .…”

Section: Device Stabilitymentioning

confidence: 99%

“…A different method to enhance the interface stability of OSCs under ambient air conditions is to use hydrophobic IFLs, such as 2D carbon materials (e.g., GR and GO), as reported by several different research groups . The hydrophobicity of solution‐processable reduced GO used as an alternative to PEDOT:PSS can improve the device lifetime of OSCs, as shown by Yun et al Similarly, Kim et al showed that microwave‐reduced GO layers have excellent passivation properties against oxygen and moisture, which conserves the device performance (88% of the initial PCE) even under ambient conditions for 1000 h . In addition to organic IFLs, solution‐processable hydrophobic metal oxides and metal halides, such as ZnO, nickel oxide, or copper iodide, have also been developed as an alternative anodic IFL to improve the air stabilities of the devices …”

Section: Device Stabilitymentioning

confidence: 99%

See 1 more Smart Citation

Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

et al. 2016

View full text Add to dashboard Cite

The past two decades of vigorous interdisciplinary approaches has seen tremendous breakthroughs in both scientific and technological developments of bulk-heterojunction organic solar cells (OSCs) based on nanocomposites of π-conjugated organic semiconductors. Because of their unique functionalities, the OSC field is expected to enable innovative photovoltaic applications that can be difficult to achieve using traditional inorganic solar cells: OSCs are printable, portable, wearable, disposable, biocompatible, and attachable to curved surfaces. The ultimate objective of this field is to develop cost-effective, stable, and high-performance photovoltaic modules fabricated on large-area flexible plastic substrates via high-volume/throughput roll-to-roll printing processing and thus achieve the practical implementation of OSCs. Recently, intensive research efforts into the development of organic materials, processing techniques, interface engineering, and device architectures have led to a remarkable improvement in power conversion efficiencies, exceeding 11%, which has finally brought OSCs close to commercialization. Current research interests are expanding from academic to industrial viewpoints to improve device stability and compatibility with large-scale printing processes, which must be addressed to realize viable applications. Here, both academic and industrial issues are reviewed by highlighting historically monumental research results and recent state-of-the-art progress in OSCs. Moreover, perspectives on five core technologies that affect the realization of the practical use of OSCs are presented, including device efficiency, device stability, flexible and transparent electrodes, module designs, and printing techniques.

show abstract

Section: Device Stabilitymentioning

confidence: 99%

Section: Device Stabilitymentioning

confidence: 99%

Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Tel: +30 2106503347. E-mail address: c.trapalis@inn.demokritos.gr (C. Trapalis) A c c e p t e d M a n u s c r i p t 3 method that does not involves any toxic chemicals for the expansion of GO and subsequent reduction is via microwave irradiation [42][43][44][45]. It is important to note that in the latter case, the process includes the liberation of the bound oxygen in the form of CO and CO 2 , as oxidation products of carbon, and the reduction of the remaining carbon [46].…”

Section: Introductionmentioning

confidence: 99%

Non-activated high surface area expanded graphite oxide for supercapacitors

Vermisoglou

Giannakopoulou

Romanos

et al. 2015

Applied Surface Science

View full text Add to dashboard Cite

“…Accordingly, this work aims to compare the performance of both branched and linear PEI sensing materials targeted for use in CO 2 concentration sensors by micro-resonators operated in air. Additionally, the performance of PEI is evaluated in combination with rGO, obtained by microwave reduction of graphene oxide [31].…”

Section: Introductionmentioning

confidence: 99%

Comparison between Linear and Branched Polyethylenimine and Reduced Graphene Oxide Coatings as a Capture Layer for Micro Resonant CO2 Gas Concentration Sensors

Prud'homme

Nabki

2020

Sensors

View full text Add to dashboard Cite

The comparison between potential coatings for the measurement of CO2 concentration through the frequency shift in micro-resonators is presented. The polymers evaluated are linear polyethylenimine, branched polyethylenimine and reduced graphene oxide (rGO) by microwave reduction with polyethylenimine. The characterization of the coatings was made by using 6 MHz gold-plated quartz crystals, and a proof-of-concept sensor is shown with a diaphragm electrostatic microelectromechanical systems (MEMS) resonator. The methods of producing the solutions of the polymers deposited onto the quartz crystals are presented. A CO2 concentration range from 0.05% to 1% was dissolved in air and humidity level were controlled and evaluated. Linear polyethylenimine showed superior performance with a reaction time obtained for stabilization after the concentration increase of 345 s, while the time for recovery was of 126 s, with a maximum frequency deviation of 33.6 Hz for an in-air CO2 concentration of 0.1%.

show abstract

Microwave-reduced graphene oxide for efficient and stable hole extraction layers of polymer solar cells

Cited by 18 publications

References 25 publications

Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

Non-activated high surface area expanded graphite oxide for supercapacitors

Comparison between Linear and Branched Polyethylenimine and Reduced Graphene Oxide Coatings as a Capture Layer for Micro Resonant CO2 Gas Concentration Sensors

Contact Info

Product

Resources

About