A conjugated microporous polymer film fabricated by in situ electro-chemical deposition as a hole transporting layer in organic photovoltaics

2018 ◽  
Vol 6 (34) ◽  
pp. 9044-9048 ◽  
Author(s):  
Shuo Yang ◽  
Chengdong Yang ◽  
Xuning Zhang ◽  
Zhong Zheng ◽  
Shiqing Bi ◽  
...  
Keyword(s):  
Polymer Film ◽  
Electrochemical Deposition ◽  
Organic Photovoltaics ◽  
Chemical Deposition ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Hole Transporting

A conjugated microporous polymer (CMP) film was fabricated by electrochemical deposition and applied as a hole transporting layer (HTL) in organic photovoltaics.

scholarly journals In-Situ Energy Dispersive X-ray Reflectivity Applied to Polyoxometalate Films: An Approach to Morphology and Interface Stability Issues in Organic Photovoltaics

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1240
Author(s):  
Amanda Generosi ◽  
Marco Guaragno ◽  
Qirong Zhu ◽  
Anna Proust ◽  
Nicholas T. Barrett ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Low Cost ◽  
Energy Dispersive ◽  
Close Monitoring ◽  
X Ray ◽  
Hole Transporting ◽  
Physical And Chemical ◽  
Energy Conversion Devices

Organic solar cells, characterized by a symmetrical regular layered structure, are very promising systems for developing green, low cost, and flexible solar energy conversion devices. Despite the efficiencies being appealing (over 17%), the technological transfer is still limited by the low durability. Several processes, in bulk and at interface, are responsible. The quick downgrading of the performance is due to a combination of physical and chemical degradations. These phenomena induce instability and a drop of performance in working conditions. Close monitoring of these processes is mandatory to understand the degradation pathways upon device operation. Here, an unconventional approach based on Energy Dispersive X-ray Reflectivity (ED-XRR) performed in-situ is used to address the role of Wells–Dawson polyoxometalate (K6-P2W18O62, hereafter K6-P2W18) as hole transporting layer in organic photovoltaics. The results demonstrate that K6-P2W18 thin films, showing ideal bulk and interface properties and superior optical/morphological stability upon prolonged illumination, are attractive candidates for the interface of durable OPV devices.

scholarly journals Preparation of large-area ultrathin carbon semiconductors converted from conjugated microporous polymer films

RSC Advances ◽  
2019 ◽  
Vol 9 (30) ◽  
pp. 17399-17404 ◽  
Author(s):  
Shang Ju ◽  
Yamei Ding ◽  
Yuhang Yin ◽  
Shuai Cheng ◽  
Xiangjing Wang ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Polymer Films ◽  
Carbon Dots ◽  
Annealing Process ◽  
Large Area ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Thermal Annealing Process

Large-area carbon semiconductors were prepared by combining the in situ polymerization with thermal annealing process. Moreover, a photodetector based on carbon dots decorated carbon semiconductors was fabricated.

In Situ Electrochemical Deposition and Doping of C60Films Applied to High-Performance Inverted Organic Photovoltaics

2012 ◽  
Vol 24 (42) ◽  
pp. 5727-5731 ◽  
Author(s):  
Cheng Gu ◽  
Zhongbo Zhang ◽  
Shuheng Sun ◽  
Yuyu Pan ◽  
Chengmei Zhong ◽  
...  
Keyword(s):  
Electrochemical Deposition ◽  
Organic Photovoltaics ◽  
High Performance

Dynamics of Nanoparticle Chain Aggregates of Carbon Under Tension

2003 ◽  
Vol 778 ◽  
Author(s):  
Rajdip Bandyopadhyaya ◽  
Weizhi Rong ◽  
Yong J. Suh ◽  
Sheldon K. Friedlander
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Polymer Film ◽  
Elastic Behavior ◽  
Small Strains ◽  
Transmission Electron ◽  
Chain Aggregates ◽  
Nanoparticle Chains ◽  
Reinforcing Filler

AbstractCarbon black in the form of nanoparticle chains is used as a reinforcing filler in elastomers. However, the dynamics of the filler particles under tension and their role in the improvement of the mechanical properties of rubber are not well understood. We have studied experimentally the dynamics of isolated nanoparticle chain aggregates (NCAs) of carbon made by laser ablation, and also that of carbon black embedded in a polymer film. In situ studies of stretching and contraction of such chains in the transmission electron microscope (TEM) were conducted under different maximum values of strain. Stretching causes initially folded NCA to reorganize into a straight, taut configuration. Further stretching leads to either plastic deformation and breakage (at 37.4% strain) or to a partial elastic behavior of the chain at small strains (e.g. 2.3% strain). For all cases the chains were very flexible under tension. Similar reorientation and stretching was observed for carbon black chains embedded in a polymer film. Such flexible and elastic nature of NCAs point towards a possible mechanism of reinforcement of rubber by carbon black fillers.

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