Functionalized Graphene Oxide Enables a High-Performance Bulk Heterojunction Organic Solar Cell with a Thick Active Layer

2018 ◽  
Vol 9 (21) ◽  
pp. 6238-6248 ◽  
Author(s):  
Cheng-Kun Lyu ◽  
Fei Zheng ◽  
B. Hari Babu ◽  
Meng-Si Niu ◽  
Lin Feng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cell ◽  
Active Layer ◽  
Organic Solar Cell ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

scholarly journals Synthesis of hexamethylene diisocyanate-functionalized graphene oxide for solar cell applications

2018 ◽  
Vol 57 ◽  
pp. 02005
Author(s):  
J A Luceño ◽  
A M Díez-Pascual ◽  
R Peña ◽  
P García-Díaz
Keyword(s):  
Graphene Oxide ◽  
Solar Cell ◽  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Hexamethylene Diisocyanate ◽  
Functionalized Graphene ◽  
Polar Solvents ◽  
Functionalized Graphene Oxide ◽  
Hydrophobic Nature ◽  
Highly Hydrophobic

Graphene (G), an allotrope of carbon with exceptional optical, electronic, thermal and mechanical properties, and its oxidized form graphene oxide (GO), show huge potential for a broad range of applications. In particular, their high conductivity, transparency, flexibility, and abundance make them suitable for polymer solar cells (PSCs). However, their insolubility in common organic solvents hinders their applications. Consequently, novel functionalization approaches are pursued. The present work is devoted to the preparation of hexamethylene diisocyante-functionalized graphene oxide (HDI-GO). The synthesized nanomaterial shows a highly hydrophobic nature and can be dispersed in organic non-polar solvents, hence is a prospective candidate to be combined with conjugated polymers for solar cell applications.

Stable functionalized graphene oxide–cellulose nanofiber solid electrolytes with long-range 1D/2D ionic nanochannels

2019 ◽  
Vol 7 (36) ◽  
pp. 20871-20877 ◽  
Author(s):  
Wei Jia ◽  
Peiyi Wu
Keyword(s):  
Graphene Oxide ◽  
Fuel Cell ◽  
Long Range ◽  
Solid Electrolytes ◽  
High Performance ◽  
Cellulose Nanofiber ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

High-performance NPGOM-CNF solid electrolytes with long-range 1D/2D ionic nanochannels for fuel cell applications.

Increasing Polymer Solar Cell Active Layer Efficiency and Organization by Adding Gold-Functionalized Reduced Graphene Oxide

2013 ◽  
Vol 1500 ◽  
Author(s):  
Rebecca Isseroff ◽  
Andrew Chen ◽  
Sneha Chittabathini ◽  
Alexandra Tse ◽  
Cheng Pan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cell ◽  
Reduced Graphene Oxide ◽  
Active Layer ◽  
Bulk Heterojunction ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Reduced Graphene ◽  
Polymer Component ◽  
Low Efficiency

ABSTRACTRelatively low efficiency is one of the main obstacles to overcome in the engineering of organic bulk heterojunction (BHJ) solar cells. Reduced graphene oxide (RGO), which has high conductivity, has been proposed to enhance the function of PCBM in the interfacial dissociation of excitons, but incorporating it into the hydrophobic photoactive polymers has proved challenging. Here we describe a novel technique for incorporating Au nanoparticles (AuNp) into the structure of the RGO. The AuNps then interact with the sulfur groups on the photoactive polymer component, while the RGO interacts via π – π stacking with the chemically similar PCBM, thereby anchoring the complex to the polymer interface. Graphene oxide was synthesized and then reduced in the presence of a gold salt. The resulting gold-functionalized RGO (AuRGO) sheets were characterized using TGA, FTIR, and TEM. The AuRGO was not soluble in chlorobenzene; however, in the presence of P3HT, the AuRGO dissolved, suggesting a reaction between the gold and the sulfur of the P3HT via a metal-thiolate bond. At 2 mg/ml, AuRGO increased the solar cell efficiency approximately 50% over the control, but higher concentrations produced large, columnar structures which blocked the electrode from having a uniform contact with the active layer.

Development of bismuth-functionalized graphene oxide to remove radioactive iodine

2019 ◽  
Vol 48 (2) ◽  
pp. 478-485 ◽  
Author(s):  
Sangsoo Han ◽  
Wooyong Um ◽  
Won-Seok Kim
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Radioactive Iodine ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

Bismuth-functionalized graphene oxide shows high performance in the removal of radioactive iodine.

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