High resolution patterning in organic semiconductors

  • Alfonso from ICMAB-CSIC
  • From Spain
  • Responsive
  • Patents for licensing

Summary of the technology

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:


  • For the first time, local patterning of molecular orientation achieved.
  • One step patterning of composition in binary and ternary systems.
  • Compatible with high throughput fabrication methods.
  • No multistep for multipatterning needed.
  • the throughput of printing methods with the resolution of ligh-based methods.



Current development status

Laboratory prototypes


electronics, optoelectronics and photonic devices

Desired business relationship

Patent licensing

Technology development

New technology applications

Intellectual property status

  • Patent already applied for
  • Patent application number :EP20382514

Attached documents

Related Keywords

  • Semiconductors Technology
  • Industrial manufacturing, Material and Transport Technologies
  • Industrial Technologies
  • Energy Technology
  • Renewable Sources of Energy
  • Electronics Related Market
  • Semiconductors Market
  • Customised semiconductors
  • Semiconductor fabrication equipment and wafer products
  • Energy Market
  • Power generation
  • Industrial Products


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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