Icmab researchers have developed a new method for high resolution structural and/or compositional modification in a molecular organic semiconductor film. This method has applications in the production electronic, optoelectronic and photonic devices, among others.
A key part of fabrication of organic semiconductor active layers involve spatial patterning of material characteristics to enable device-specific functionalities.
State-of-the-art methods include photolithograpghy, laser induced forward transfer (LIFT), inkjet, lithography, etc. Some of them are fast, some of them have high spatial resolution, nevertheless in large areas or roll-to-roll processing those techniques have limitations such us additive or substractive steps, slow multistep processing, etc. An additional limitation is the fact that several structural features remain unattainable within one step.
ICMAB's method consists on solution deposition of a molecular gate interlayer onto the target semiconductor layer, followed by a donor layer comprising functional small molecules. Application of a stimulus such as laser light, activates diffusion of the functional molecules into the semiconductor layer through the molecular gate interlayer.
With this new method we can pattern local material composition, electrical doping, chain conformation and chain orientation. More than one feature can be patterned simultaneously. Moreover, we keep the resolution of a light patterning technique and a relatively fast speed.
Main innovations and advantages:
Current development status
Laboratory prototypes
Applications
electronics, optoelectronics and photonic devices
Desired business relationship
Patent licensing
Technology development
New technology applications
The Institute of Materials Science of Barcelona (ICMAB) is a Severo Ochoa Centre of Excellence research center which beongs to the Consejo Superior de Investigaciones Científicas (CSIC) and is governed by a Foundation board.
The Institute was set up in 1987 and subsequently, in April 1991, the laboratories were opened at the Campus of the Autonomous University of Barcelona (UAB). It is part of the Barcelona Nanotechnology Cluster in Bellaterra.
The aim of the institute is to carry out research aimed at obtaining and characterising materials of industrial interest. Its activities are based on the synthesis, preparation, crystallization and characterisation of functional high-performance materials and nanomaterials, which in some cases have led to the construction of device prototypes based on these materials.
Studies and improvements both of conventional materials, as well as new molecular, supramolecular, magnetic, superconducting and porous materials etc. are being developed through projects and research contracts. There are currently 9 ERC funded projects at ICMAB.
To develop these activities, at present there are 57 permanent staff among researchers and back up personnel together with 80 non-permanent staff divided into eight researgh groups, one general unit service, and one unit of Scientific and Technological Services.
In 2016 the ICMAB reached the 100.000 citations, and it is currently the first centre, among the CSIC centres, in the Nature Index. Each permanent researcher publishes close to 5 articles per year in Journals with a very high impact factor.
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