Graphene and Graphene-like Molecules: Prospects in Solar Cells

Loh, Kian Ping; Tong, Shi Wun; Wu, Jishan

doi:10.1021/jacs.5b10917

Cited by 128 publications

(71 citation statements)

References 61 publications

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“…Transparent conductive electrode (TCE) materials have attracted great attention in optoelectronic elds, including touch screens, 1 organic light emitting diodes (OLEDs) 2 and organic solar cells (OSCs). 3 Apart from the costly indium tin oxide (ITO), 4 there are many different alternatives for TCE, such as carbon nanotubes (CNT), 5 graphene, 6 metal grids, 7 and metal nanowires. 8,9 Among them, silver nanowires (Ag NWs) are a promising TCE material because of their simple synthesis and the possibility of large-area lm fabrication via solution processes such as slot-die coating.…”

Section: Introductionmentioning

confidence: 99%

An eco-friendly water-assisted polyol method to enhance the aspect ratio of silver nanowires

et al. 2019

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With water as an eco-friendly heterogeneous nucleation accelerator, silver nanowires (Ag NWs) have been successfully prepared with a high aspect ratio (>1600). The Ag NW-based film exhibits a low sheet resistance of 8.1 U sq À1 with a transparency of 81.9% at 550 nm, showing the potential application of electrode materials in polymer solar cells. † Electronic supplementary information (ESI) available: Process of slot-die coating inverted OSCs with Ag NWs electrode; morphology the core-shell structure of Ag NWs made by PVP of high molecular weight; the performance of TCFs made from different Ag NWs; the aspect ratio of Ag NWs made by different polyol method. See

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Section: Introductionmentioning

confidence: 99%

An eco-friendly water-assisted polyol method to enhance the aspect ratio of silver nanowires

et al. 2019

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“…However, under the PV effect, a photoinduced electric field is generated without a source–drain voltage. This effect can be generated in p–n junctions or with asymmetric electrodes to form Schottky or Ohmic contacts, respectively . A solar cell is an energy‐harvesting device based on this PV effect.…”

Section: Electronic and Optoelectronic Applicationsmentioning

confidence: 99%

“…Within the vast body of research on OPVs, 2D materials with unique properties have been demonstrated to enhance the PCE of OPVs. In this section, we discuss recent advancements in OPVs utilizing 2D–organic hybrid structures as a light‐harvesting layer or a 2D electron/hole transport layer …”

Section: Electronic and Optoelectronic Applicationsmentioning

confidence: 99%

2D–Organic Hybrid Heterostructures for Optoelectronic Applications

et al. 2019

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The unique properties of hybrid heterostructures have motivated the integration of two or more different types of nanomaterials into a single optoelectronic device structure. Despite the promising features of organic semiconductors, such as their acceptable optoelectronic properties, availability of low-cost processes for their fabrication, and flexibility, further optimization of both material properties and device performances remains to be achieved. With the emergence of atomically thin 2D materials, they have been integrated with conventional organic semiconductors to form multidimensional heterostructures that overcome the present limitations and provide further opportunities in the field of optoelectronics. Herein, a comprehensive review of emerging 2D-organic heterostructures-from their synthesis and fabrication to their state-of-the-art optoelectronic applications-is presented. Future challenges and opportunities associated with these heterostructures are highlighted.solution-processed on any substrate inexpensively and at relatively low temperatures, which is highly advantageous for their scale-up from fundamental studies to industrial-level production. [6][7][8][9][10] Initial examples of developed organic semiconductors include field-effect transistors (FETs), [4,5,[11][12][13][14][15] photodetectors (PDs), [5,16,17] photovoltaics (PVs), [5,16,18,19] light-emitting diodes (LEDs), [5,16,20] and so on. In spite of the demonstration of promising prototypes of organic semiconductors, their development and optimization for highperformance device applications remain a challenge. In particular, it is becoming increasingly difficult to impart suitable properties to individual materials and realize appropriate physical dimensions in order to satisfy increasing demands of multifunctionality for fundamental studies, device designs, and performance optimization. [21,22] Consequently, such challenges and opportunities can be addressed by performing multidimensional integration or hybridization of organic semiconductors with various types of materials having potentially novel functionalities and unique properties.2D van der Waals (vdW) materials are the most obvious candidate for such hybridization with organic semiconductors. [22,23] Since the discovery of graphene, which opened up new avenues ranging from fundamental studies to real-world applications, [24][25][26][27] several other groups of 2D vdW materials have also been discovered, such as hexagonal boron nitride (h-BN), [28,29] transition metal dichalcogenides (TMDCs), [23,[30][31][32][33][34] black phosphorus (BP), [35][36][37][38][39][40] borophene, [41][42][43] silicene, [43] and germanene. [43] The 2D structure has been demonstrated to possess several exceptional electrical, optical, mechanical, and thermal properties vis-à-vis its corresponding bulk counterpart. [22,25,27] Most importantly, from the viewpoint of hybridization with organic semiconductors, the atomically flat and dangling-bond-free surface of 2D vdW materials not only provides an ideal int...

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“…The hydrothermal temperature and reaction time were 220 C and 12 h, respectively. Finally, the collected N-GP from the autoclaves was rinsed by de-ionized water to remove residual NH 3 and dried in a vacuum oven at 80 C overnight. In comparison, GP was prepared by adding 10 mL de-ionized water to the autoclave, while other conditions maintained the same.…”

Section: Preparation Of Free-standing N-gpmentioning

confidence: 99%

“…Graphene, with a one-atom thick and two-dimensional closely packed honeycomb lattice, 1,2 has broad application prospects in many elds, [3][4][5][6][7][8][9][10][11] due to its excellent intrinsic carrier mobility, high mechanical strength, superior thermal conductivity, high optical transmittance and so on. The large theoretical specic surface area (2630 m 2 g À1 ) and superior electrical conductivity (10 6 S cm À1 ) make it an attractive additive in LIB.…”

Section: Introductionmentioning

confidence: 99%

Free-standing nitrogen-doped graphene paper for lithium storage application

et al. 2018

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A flexible free-standing nitrogen-doped graphene paper (N-GP) is fabricated via a facile hydrothermal approach with doping reaction occurring at the solid/gas interface of graphene oxide and ammonia vapor. Ammonia not only facilitates the doping of oxidized graphene paper efficiently with a nitrogen doping level of ca. 6.81%, but also promotes its reduction. The electrochemical properties of N-GP as an anode of lithium ion batteries (LIB) are evaluated and N-GP delivers almost doubled reversible discharge capacity compared to the undoped graphene paper (GP) as well as a good cyclic stability and rate performance. The proposed strategy to realize simultaneous reduction and nitrogen doping of graphene oxide via hydrothermal approach at the solid/gas interface offers a green and facile solution to modify graphene paper with desired electrochemical performances for LIB application.

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Graphene and Graphene-like Molecules: Prospects in Solar Cells

Cited by 128 publications

References 61 publications

An eco-friendly water-assisted polyol method to enhance the aspect ratio of silver nanowires

An eco-friendly water-assisted polyol method to enhance the aspect ratio of silver nanowires

2D–Organic Hybrid Heterostructures for Optoelectronic Applications

Free-standing nitrogen-doped graphene paper for lithium storage application

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