Organic p-n junction with antenna

Details Organic p-n junction with antenna Organic p-n junction with antenna

H - Electricity

01

L

31/154, 345/22

H01L 31/06 (2006.01) H01L 51/30 (2006.01)

Patent

CA 1229221

- 8 - TITLE AN ORGANIC P-N JUNCTION WITH ANTENNA INVENTORS James R BOLTON and James Edwin GUILLET ABSTRACT An organic P-N junction preferably made of a porphyrin interlined with a quinone at a distance of between 10 .ANG. and 40 .ANG. is known in the art and although its theoretical efficiency is 16% to 18%, its actual efficiency is about 1% due to the inefficiency in the absorption of light at the molecule sur- face. The absorption of light can be increased from 1% to al- most 100% and the theoretical efficiency therefore of the P-N junction can be increased from approximately 1% to the theore- tical limit of 16% to 18% by disposing upon the P-N junction material an antenna comprising a polymer disposing therein sensitizers preferably organic dyes which absorb light and cause the light to be cascadingly transferred through the polymer and deposited at the surface of the donor region of the P-N junction where the light is then absorbed and the P-N junction liberates an electron. Preferred dyes which act as sensitizers and are appropriately light transmissive and elec- tron conductive are polymers including naphthalene anthracene and phenanthrene.

453750

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