Source-Drain Deposition Mask, Low Density
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Shadow masks for deposition of source drain contacts. Designed for use in the low density evaporation stack with our standard sized substrates of 20 x 15 mm. Each mask will work with up to 12 substrates, each with five OFETs to produce a total of 60 devices in a single evaporation.
Linear channels of width 1 mm with two designs available of either five identical channel lengths of 30 μm or variable channel lengths of 30, 40, 50, 60 and 80 μm (one per substrate)
|Number of OFETs
|60 (5 per substrate)
E291: 30 μm
E292: 30, 40, 50, 60, 80 μm (one each per substrate)
|Contact pad size
|1 mm x 1 mm
|Channel bar tolerance
|Hard electroformed nickel
*E291/E292 yield of working devices is 90% (54/60).
The mask is designed in such a way that during the deposition of the gate electrodes on the corner of the substrate the metal should cover the edge of the substrate as well. This ensures conductivity between the metal electrodes and the p-doped silicon. If you find the edges of the substrate not to be conductive you must scratch the edges of the substrate to remove the insulating silicon oxide in correspondence with the corner where the gate electrode will be deposited.
To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.