US 11,655,153 B2
Extended absorbance solar leaf and methods of making
Brandon M. Kobilka, Fishkill, NY (US); Jason T. Wertz, Pleasant Valley, NY (US); Joseph Kuczynski, North Port, FL (US); and Scott B. King, Rochester, MN (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Oct. 21, 2019, as Appl. No. 16/659,172.
Application 16/659,172 is a division of application No. 15/848,743, filed on Dec. 20, 2017, granted, now 10,526,205.
Prior Publication US 2020/0048094 A1, Feb. 13, 2020
Int. Cl. C01B 32/194 (2017.01); C07D 409/14 (2006.01); H01L 31/0445 (2014.01); H01L 31/0216 (2014.01); C07D 257/08 (2006.01); C07D 513/04 (2006.01); C07D 517/04 (2006.01); C07D 519/00 (2006.01); H01L 51/00 (2006.01); H01L 51/44 (2006.01); H01G 9/20 (2006.01)
CPC C01B 32/194 (2017.08) [C07D 257/08 (2013.01); C07D 409/14 (2013.01); C07D 513/04 (2013.01); C07D 517/04 (2013.01); C07D 519/00 (2013.01); H01L 31/02167 (2013.01); H01L 31/0445 (2014.12); H01L 51/0067 (2013.01); H01L 51/0068 (2013.01); H01L 51/0072 (2013.01); C01B 2204/32 (2013.01); H01G 9/2059 (2013.01); H01L 51/0071 (2013.01); H01L 51/0094 (2013.01); H01L 51/447 (2013.01)] 16 Claims
 
1. A method of making a photo-absorbing composition, comprising:
forming a donor-acceptor small molecule (DASM) by bonding an electron donor portion selected from the group consisting of

OG Complex Work Unit Chemistry
to an electron acceptor portion selected from the group consisting of

OG Complex Work Unit Chemistry
wherein:
the starred bonds are sites for bonding to other chemical structures;
R is, independently in each instance, an alkyl, alkoxy, vinyl, aryl group, or fluorinated hydrocarbon group;
Q is, independently in each instance, O, S, or Se;
E is, independently in each instance, Si or Ge;
Z is, independently in each instance, a proton or a fluorine atom;
X is, independently in each instance, C or N; and
n of the electron donor portion is an integer greater than or equal to 1; and
bonding the DASM to a nanographene structure using a Stille coupling reaction, a Suzuki cross-coupling reaction, or a C—H activation cross-coupling reaction, the nanographene structure (NG) selected from the group consisting of

OG Complex Work Unit Chemistry
the photo-absorbing composition having a general structure selected from the group consisting of

OG Complex Work Unit Chemistry
 wherein, n of the photo-absorbing composition is an integer greater than or equal to 1.