US 12,156,413 B2
Organic solar cells and methods of making the same
Jaemin Kong, New Haven, CT (US); Francisco Antonio, New Haven, CT (US); and Andre Taylor, Brooklyn, NY (US)
Filed by NEW YORK UNIVERSITY, New York, NY (US); and YALE UNIVERSITY, New Haven, CT (US)
Filed on Mar. 26, 2020, as Appl. No. 16/831,146.
Claims priority of provisional application 62/824,083, filed on Mar. 26, 2019.
Prior Publication US 2020/0313104 A1, Oct. 1, 2020
Int. Cl. H10K 30/30 (2023.01); H01L 31/0236 (2006.01); H01L 31/048 (2014.01); H01L 31/18 (2006.01); H10K 30/20 (2023.01); H10K 30/50 (2023.01); H10K 30/82 (2023.01)
CPC H10K 30/30 (2023.02) [H01L 31/02363 (2013.01); H01L 31/1864 (2013.01); H10K 30/20 (2023.02); H10K 30/50 (2023.02); H01L 31/0481 (2013.01); H10K 30/82 (2023.02)] 12 Claims
OG exemplary drawing
 
1. An active layer comprising: a first surface, a bulk region and a second surface, the active layer comprising at least one small molecule component and at least one polymer component,
wherein a weight ratio of the at least one small molecule component to the at least one polymer component the active layer is less than 1.0,
wherein the root mean square surface roughness of the first surface between 2.74 nm and 3.01 nm; wherein the weight ratio of the at least one small molecule component to the at least one polymer component is lower on the first surface than in the bulk region; and
wherein the weight ratio of the at least one small molecule component to the at least one polymer component on the first surface is between 15:85 and 1:99.