Interfacial self-assembly of ultrathin polydiacetylene/graphene oxide nanocomposites: A new method for synergetic enhancement of surface charge transfer without doping

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

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p ‐Type Charge Transfer Doping of Graphene Oxide with (NiCo) 1− y Fe y O x for Air‐Stable, All‐Inorganic CsPbIBr 2 Perovskite Solar Cells

Angewandte Chemie International Edition ◽

10.1002/anie.202016703 ◽

2021 ◽

Vol 60 (19) ◽

pp. 10608-10613

Author(s):

Jian Du ◽

Jialong Duan ◽

Xiya Yang ◽

Yanyan Duan ◽

Quanzhu Zhou ◽

...

Keyword(s):

Graphene Oxide ◽

Solar Cells ◽

Charge Transfer ◽

Perovskite Solar Cells ◽

P Type

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Direct Patterning and Spontaneous Self-Assembly of Graphene Oxide via Electrohydrodynamic Jet Printing for Energy Storage and Sensing

Micromachines ◽

10.3390/mi11010013 ◽

2019 ◽

Vol 11 (1) ◽

pp. 13 ◽

Cited By ~ 2

Author(s):

Bin Zhang ◽

Jaehyun Lee ◽

Mincheol Kim ◽

Naeeung Lee ◽

Hyungdong Lee ◽

...

Keyword(s):

Graphene Oxide ◽

Energy Storage ◽

Self Assembly ◽

High Performance ◽

Three Dimensional ◽

Chemical Properties ◽

Layer By Layer ◽

Energy Storage Devices ◽

Laminar Structure ◽

Jet Printing

The macroscopic assembly of two-dimensional materials into a laminar structure has received considerable attention because it improves both the mechanical and chemical properties of the original materials. However, conventional manufacturing methods have certain limitations in that they require a high temperature process, use toxic solvents, and are considerably time consuming. Here, we present a new system for the self-assembly of layer-by-layer (LBL) graphene oxide (GO) via an electrohydrodynamic (EHD) jet printing technique. During printing, the orientation of GO flakes can be controlled by the velocity distribution of liquid jet and electric field-induced alignment spontaneously. Closely-packed GO patterns with an ordered laminar structure can be rapidly realized using an interfacial assembly process on the substrates. The surface roughness and electrical conductivity of the LBL structure were significantly improved compared with conventional dispensing methods. We further applied this technique to fabricate a reduced graphene oxide (r-GO)-based supercapacitor and a three-dimensional (3D) metallic grid hybrid ammonia sensor. We present the EHD-assisted assembly of laminar r-GO structures as a new platform for preparing high-performance energy storage devices and sensors.

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Fabrication of an electrochemical platform based on the self-assembly of graphene oxide–multiwall carbon nanotube nanocomposite and horseradish peroxidase: direct electrochemistry and electrocatalysis

Nanotechnology ◽

10.1088/0957-4484/22/49/494010 ◽

2011 ◽

Vol 22 (49) ◽

pp. 494010 ◽

Cited By ~ 38

Author(s):

Qian Zhang ◽

Shaojun Yang ◽

Jing Zhang ◽

Ling Zhang ◽

Pingli Kang ◽

...

Keyword(s):

Graphene Oxide ◽

Carbon Nanotube ◽

Horseradish Peroxidase ◽

Self Assembly ◽

Direct Electrochemistry ◽

The Self ◽

Multiwall Carbon Nanotube ◽

Multiwall Carbon

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Surface charge transfer induced p-CdS nanoribbon/n-Si heterojunctions as fast-speed self-driven photodetectors

Journal of Materials Chemistry C ◽

10.1039/c5tc01016k ◽

2015 ◽

Vol 3 (24) ◽

pp. 6307-6313 ◽

Cited By ~ 18

Author(s):

Chao Xie ◽

Fangze Li ◽

Longhui Zeng ◽

Linbao Luo ◽

Li Wang ◽

...

Keyword(s):

Charge Transfer ◽

Surface Charge ◽

Fast Speed ◽

Type Silicon ◽

P Type

Heterojunctions composed of single p-type CdS nanoribbons (NRs) and n-type silicon (Si) were successfully fabricated and can be applied as fast-speed self-driven visible photodetectors.

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