High-Quality Organic Semiconductors [for Organic Electronics]

High-Quality Organic Semiconductors [for Organic Electronics]


  • Post By : Kumar Jeetendra
  • Source: TCI Chemicals (India) pvt. ltd
  • Date: 09 August, 2019

Organic semiconductors have been receiving much attention as promising materials for “printed electronics” owing to their flexibility and solubility. TCI offers several special reagents of guaranteed very high-quality for these purposes, including typical and cutting-edge semiconducting materials utilized for organic field effect transistors (OFET), organic photovoltaics (OPV), or organic electroluminescence devices (OLED).

Every batch of the reagents are uniquely analysed against our high purity and quality standards by in-house preparation of OFET devices, and tested for FET mobility. We continue to recognize and value the real performance of our materials research products as a quality standard, wherein conventional analytical methods are not accurate enough to reveal performance deficiencies due to impurities. To learn more,click here

Organic Transistor (OFET) Materials

One functional parameter for evaluation of an organic semiconductor is mobility (μ) that shows how fast holes or electrons move in the semiconducting layer. We need an organic material with high mobility for highly drivable electronic circuits. The mobility can be measured from an organic field-effect transistor (OFET). There are TOF and TRMC methods for the measurement. The OFET can be fabricated by an organic semiconductor layer, insulating layer, source, drain and gate electrodes. In addition to the mobility value, we can determine fundamental OFET characteristics such as minimum drive voltage and drive stability. To learn more, click here

Organic Light-Emitting Diode (OLED) Materials

A practical OLED device further requires excellent heat-resistance and durability. Many hole transport materials based on triphenylamine derivatives (TPD) are widely usable, because they are heat-resistant and amorphous. In addition to the TPDs, oxadiazole derivatives (PBD) having an electron transport property, Alq3 as a host material, and blue emissive distylyl derivatives are fundamental materials for amorphous OLED devices. To learn more,click here

Organic Solar Cell (OPV) Materials

The OPV device usually requires a bulk heterojunction (BHJ) which can be fabricated by mixing an electron-donor (p-type semiconductor) and electron-acceptor (n-type semiconductor). The former material involves a π-conjugated polymer and a small molecule semiconductor, and the latter material is normally a fullerene derivative. PCBM, that is a solubility-enhanced fullerene, efficiently provides a bulk heterojunction. ICBM gives a high open-circuit voltage because it has a higher energy LUMO than that of PCBM. A C70 derivative usually gives higher cell efficiency compared with that of the corresponding C60 one, because the C70 derivative absorbs light better than the C60. We can introduce an acceptor component into the structure of a p-type semiconducting polymer to form a donor-acceptor (DA-type) polymer, that shows light absorption in the long wavelength area based on a charge transfer. Raw materials for π-conjugated polymers are listed in the section of ‘Building Blocks for Semiconducting Polymer’. To learn more, click here


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