Polyaniline–graphene quantum dots (PANI–GQDs) hybrid for plastic solar cell

Gebreegziabher, Gebremedhin Gebremariam; Asemahegne, A.S.; Ayele, Delele Worku; Manivel, Perumal; Narzary, Rewrewa; Sahu, Partha Pratim; Kumar, Ashok

doi:10.1007/s42823-019-00064-6

Cited by 27 publications

(4 citation statements)

References 56 publications

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“…This, in turn, can lead to efficient photon conversion and improved charge transport, and consequently improving power conversion efficiency. In another study, Gebreegziabher et al [215] synthesized polyaniline-GQDs (PANI/GQDs) nanocomposite through the in situ polymerization of PANI in the presence of GQDs. Photovoltaic Figure 6.…”

Section: Solar Cellsmentioning

confidence: 99%

“…In another study, Gebreegziabher et al. [ 215 ] synthesized polyaniline‐GQDs (PANI/GQDs) nanocomposite through the in situ polymerization of PANI in the presence of GQDs. Photovoltaic cells based on this plastic‐based nanocomposite system as the active layer presented acceptable light absorption, thermal, and electrical characteristics mainly due to the interaction between the conjugated structure of PANI and π electrons of GQDs.…”

Section: Applications Of Gqdsmentioning

confidence: 99%

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Synthesis, Applications, and Prospects of Graphene Quantum Dots: A Comprehensive Review

Ghaffarkhah

Hosseini

Kamkar

et al. 2021

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252

100

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Graphene quantum dot (GQD) is one of the youngest superstars of the carbon family. Since its emergence in 2008, GQD has attracted a great deal of attention due to its unique optoelectrical properties. Non‐zero bandgap, the ability to accommodate functional groups and dopants, excellent dispersibility, highly tunable properties, and biocompatibility are among the most important characteristics of GQDs. To date, GQDs have displayed significant momentum in numerous fields such as energy devices, catalysis, sensing, photodynamic and photothermal therapy, drug delivery, and bioimaging. As this field is rapidly evolving, there is a strong need to identify the emerging challenges of GQDs in recent advances, mainly because some novel applications and numerous innovations on the ease of synthesis of GQDs are not systematically reviewed in earlier studies. This feature article provides a comparative and balanced discussion of recent advances in synthesis, properties, and applications of GQDs. Besides, current challenges and future prospects of these emerging carbon‐based nanomaterials are also highlighted. The outlook provided in this review points out that the future of GQD research is boundless, particularly if upcoming studies focus on the ease of purification and eco‐friendly synthesis along with improving the photoluminescence quantum yield and production yield of GQDs.

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Section: Solar Cellsmentioning

confidence: 99%

Section: Applications Of Gqdsmentioning

confidence: 99%

Synthesis, Applications, and Prospects of Graphene Quantum Dots: A Comprehensive Review

Ghaffarkhah

Hosseini

Kamkar

et al. 2021

Small

252

100

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“…The most important characteristics of conducting polymers, to make it suitable candidate for electronic devices, are low cost [120], flexible [121], solution processable [122][123][124][125][126] and foremost non toxic [127][128][129]. Therefore as far as device applications are concerned, the conducting polymers (CPs) have tremendous role in different fields including sensors [130][131][132][133], solar cells [134,135], batteries [136], organic light emitting diodes (OLED) [69,137,138], electromagnetic shielding [139,140] and thermoelectric power generators [141][142][143][144]. Normally like molecular semiconductors the application of CPs, in various electronic devices, is determined by their electrical properties and in this connection, tailoring of electrical conductivity is the most targeted feature.…”

Section: Conducting Polymersmentioning

confidence: 99%

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

et al. 2020

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Tailoring the characteristics of organic semiconductors including molecular semiconductor and conducting polymers is the frontline area of research for improving the performance of organic electronic devices. Electron beam treatment has been established as one of the easiest method in comparison to others like chemical doping, thermal processing, ozonolysis, UV and other ionizing radiation treatment, to tune the physico-chemical properties of organic semiconductors. High energy electron beam (EB) generated from an accelerators impinges energy to the material and causes several phenomena including doping, crosslinking, chain degradation, gas evolution, molecular structural modifications, oxidation and unsaturation. Such modifications lead to variation in electrical characteristics and consequently affect the overall device performances. In the present review we have focused on the different interaction processes of EB with organic semiconductors and its implications to tailor the performance of device comprising of it mainly gas sensors, field effect transistors, thermoelectric power generators and radiation dosimeters.

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“…Consequently, GQD–PANI nanocomposite systems have attracted significant attention. Different types of GQD–PANI composites have been developed and investigated for their potential applications in sensing, , photovoltaics, − and energy-storage devices (supercapacitors and pseudocapacitors). , For these applications, a rigorous understanding of their transport properties is essential. A key ingredient in understanding the charge transport mechanism in these quasi-one-dimensional (1D) flexible and conducting polymers is to recognize the strong electron–lattice interactions .…”

Section: Introductionmentioning

confidence: 99%

Charge Transport through Functionalized Graphene Quantum Dots Embedded in a Polyaniline Matrix

Siddique

Morrison

Venkat

et al. 2021

ACS Appl. Electron. Mater.

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Nitrogen-functionalized graphene quantum dots embedded in a polyaniline matrix (NGQD–PANI) are extremely promising candidates for the development of next-generation sensors and for thermoelectric materials design with the distinct advantage of tunability of electronic properties by controlled doping and/or by controlling the inherent disorder in the microstructure. While their application is increasing in photovoltaics, energy storage, and sensing technologies, a clear understanding of conduction in these hybrid systems is lacking. Here, we report a comprehensive study of NGQD–PANI composites with varying NGQD doping levels over a wide range of temperature. We show distinct regimes of conduction as a function of temperature, which include: a transition from Efros–Shklovskii and Larkin–Khmelnitskii variable range hopping at low temperatures to thermally driven electron transport at higher temperatures. Importantly, we find a remarkable 50-fold enhancement in conductivity for 10% NGQD-doped samples and tunability of the crossover temperature between different regimes as a function of the applied voltage bias and doping. Our work provides a general framework to understand the interplay of extrinsic parameters like temperature and voltage bias with intrinsic material properties like doping, which drives the electronic properties in these hybrid systems of technological importance.

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Polyaniline–graphene quantum dots (PANI–GQDs) hybrid for plastic solar cell

Cited by 27 publications

References 56 publications

Synthesis, Applications, and Prospects of Graphene Quantum Dots: A Comprehensive Review

Synthesis, Applications, and Prospects of Graphene Quantum Dots: A Comprehensive Review

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

Charge Transport through Functionalized Graphene Quantum Dots Embedded in a Polyaniline Matrix

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