optical interference filters - SPOT Imaging Solutions

Organic Semiconductor Overview
Organic materials have been used as standard pigments for over
100 years in dyes, inks, food colors and many plastics. One class
of organic materials, aromatic hydrocarbons, are known for their
stability, insolubility in water and reduces tendency to migrate into
other materials. These compounds also exhibit semiconductive
properties. Spectral edges can also be generated with the intrinsic
properties of organic semiconductors. This is achieved with
materials like Copper Phthalocyanine (CuPc) that have a strong k
peak in the visible region caused by the so-called Q-band.
Description
Organic materials are commonly used in OLEDs, Organic
Photovoltaic Devices and Organic FETs. Research is being done
worldwide to make these devices commercially available. These
materials have significant absorption peaks in the visible and have
high transmission in the infrared region. As a result, they can be
integrated with other materials to provide blocking with thin layers in
optical filters. Other forms of metal-phthalocyanines and perylene
derivatives have absorption peaks in different regions of UV, Visible
and NIR regions.
Transmission (%)
Figure Y: Copper Phthalocyanine Transmission
Typical transmission of CuPc that has significant absorption peak in visible
and transmits in IR region.
Specifications
Blocking
100-150nm wide peaks in visible region
Average Transmission
> 80 % in the IR region
Temperature of Measured Performance 20°C
Operating Temperature Range - 60°C to + 80°C
Humidity Resistance
Per Mil-STD-810E, Method 507.3 Procedure I
Coating Substrates
Optical quality glass
Surface Quality
80/50 scratch/dig per Mil-O-13830A
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