Ofets having organic semiconductor layer with high carrier mobility and in situ isolation
AssigneeFacebook Technologies, LLC
InventorsTingling Rao, Lafe Purvis, Tanya Malhotra, Andrew John Ouderkirk
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Abstract
An organic field effect transistor includes a channel structure defining an active area located between a source and a drain. The channel structure includes a photoalignment layer and an organic semiconductor layer disposed directly over the photoalignment layer. The photoalignment layer is configured to influence an orientation of molecules within the organic semiconductor layer and hence impact the mobility of charge carriers both within the active area and adjacent to the active area.
Claims20
An organic field effect transistor comprising:
- a channel structure defining an active area located between a source and a drain, the channel structure comprising a photoalignment layer and an organic semiconductor layer disposed directly over the photoalignment layer.
A method comprising:
- forming a photoalignment layer;
- illuminating the photoalignment layer with polarized light to form an oriented photoalignment layer;
- and
- forming an organic semiconductor layer directly over the oriented photoalignment layer.
An organic field effect transistor comprising a photoalignment layer and an organic semiconductor layer disposed directly over the photoalignment layer, wherein a first region of the organic semiconductor layer is characterized by a first charge carrier mobility and a second region of the organic semiconductor layer is characterized by a second charge carrier mobility.
Dependencies are inferred from the claim text.