	US 11,674,077 B2
	Process for the post-deposition treament of colloidal quantum dot photodetector films to improve performance by using hydrogen peroxide
Anthony Joseph Ciani, Palatine, IL (US); Richard Edward Pimpinella, Oswego, IL (US); Christopher Frank Buurma, Bolingbrook, IL (US); Jered Feldman, Chicago, IL (US); and Christoph H. Grein, Wheaton, IL (US)
Assigned to Sivananthan Laboratories, Inc., Bolingbrook, IL (US)
Filed by Anthony Joseph Ciani, Palatine, IL (US); Richard Edward Pimpinella, Oswego, IL (US); Christopher Frank Buurma, Bolingbrook, IL (US); Jered Feldman, Chicago, IL (US); and Christoph H. Grein, Wheaton, IL (US)
Filed on Jan. 3, 2020, as Appl. No. 16/734,222.
Prior Publication US 2021/0207023 A1, Jul. 8, 2021
Int. Cl. H01L 31/18 (2006.01); B82Y 15/00 (2011.01); H01L 31/0352 (2006.01); C09K 11/02 (2006.01); B82Y 30/00 (2011.01); B82Y 20/00 (2011.01)

CPC C09K 11/025 (2013.01) [H01L 31/035218 (2013.01); H01L 31/18 (2013.01); B82Y 15/00 (2013.01); B82Y 20/00 (2013.01); B82Y 30/00 (2013.01)]

7 Claims

1. A method of treating a workpiece, comprising the steps of:

providing a workpiece comprising a colloidal quantum dot (CQD) film deposited on a substrate, the substrate comprising a device structure, an electronic circuit, a host material or other dot film, the CQD film deposited leaving a film surface exposed to chemical treatments;

providing a first volume of diluted H₂O₂;

adding de-ionized water to provide a second volume;

adding the second volume to isopropyl alcohol forming a treatment solution;

immersing the workpiece into the treatment solution; and

removing the workpiece from the treatment solution.