CPC H01L 51/0072 (2013.01) [H01L 51/0003 (2013.01); H01L 51/0017 (2013.01); H01L 51/0067 (2013.01); H01L 51/0068 (2013.01); H01L 51/0073 (2013.01); H01L 51/0074 (2013.01)] | 19 Claims |
1. A device comprising:
a substrate;
a collector layer;
an emitter layer positively biased relative to the collector layer;
a semiconductor layer located between the collector layer and the emitter layer, the semiconductor layer comprising an organic semiconductor polymer with the structure:
wherein each D is an independently selected conjugated electron donating aromatic or heteroaromatic group having from 5 to 50 backbone atoms and each D group is optionally substituted with one or more electron donating substituents or electron withdrawing substituents, provided that even when substituted the electronic character of each D is electron donating; each A is an independently selected conjugated electron accepting aromatic or heteroaromatic group having from 5 to 50 backbone atoms or an ethenylene group substituted with one or two electron withdrawing substituents, each A being optionally substituted with one or more electron donating substituents or electron withdrawing substituents provided that even when substituted the electronic character of each A is electron accepting; each of a and b is an integer from 1 to 4, and n is an integer from 2 to 10,000.
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