Organic Nanostructure Devices Based on Rolled-Up Nanomembrane Electrode

Datum

02.06.2015

Zeit

13:00 - 14:00

Sprecher

Abdur Rehman Jalil

Zugehörigkeit

IFW Dresden

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien, Physik

Host

Ulrike Steere

Beschreibung

Efforts made in the current decade have revolutionized the applications of nanoparticles (NP) and nanostructures (NS) in various fields e.g. electronic devices, energy generation and storage, medicine etc.[1] Organic nanoparticles and nanostructures are one of the bright and favorite potential candidate for the future electronic industry, particularly in the high performance, low power flexible electronics. Although the challenges of fabricating the top electrode on a molecular junction (MJ) limits the device geometry to lateral orientation, having large footprint area. Various attempts have been made to concur these challenges [2, 3] among which the rolled-up nanomembrane electrode is quite promising. In this work, the idea of rolled-up electrode has been exploited for its usage with organic nanostructure devices. The first such device is a molecular diode for sensing the toxic gases in which the crystalline nano-pyramids of VOPc and F16CuPc (organic semiconductors) heterojunction; act as the active channel. NO2 is a toxic gas, sensed and analyzed with sub-ppm flow. Amazingly the novel vertical configuration of the sensor provided with high gas sensitivity of 138%ppm-1 with quite steady baseline. The second part of this talk is charge injection and transport analyzer where the electronic characteristics of molecular nano-pyramids and nano-pillars have been investigated. The third part is a molecular spin valve for which a number of challenges exist in its fabrication. Some of these challenges and possible solutions along with the gas sensor and transport analyzer will be discussed in this talk. References: [1] Stark, et al., Chem. Soc. Rev. 2015, DOI: 10.1039/c4cs00362d [2] Bonifas, et al., Nat Nano 2010, 5, (8), 612-617. [3] Bof Bufon et al., Nano Letters 2011, 11, (9), 3727-3733

Links

• Seminars at the IFW

Letztmalig verändert: 02.06.2015, 09:43:59