The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2016
Filed:
Aug. 19, 2013
The Trustees of the University of Pennsylvania, Philadelphia, PA (US);
Cherie R. Kagan, Bala-Cynwyd, PA (US);
Aaron T. Fafarman, Philadelphia, PA (US);
Ji-Hyuk Choi, Philadelphia, PA (US);
Weon-kyu Koh, Los Alamos, NM (US);
David K. Kim, Lincoln, MA (US);
Soong Ju Oh, Philadelphia, PA (US);
Yuming Lai, Philadelphia, PA (US);
Sung-Hoon Hong, Daejeon, KR;
Sangameshwar Rao Saudari, Fishkill, NY (US);
Christopher B. Murray, Bala Cynwyd, PA (US);
The Trustees of the University of Pennsylvania, Philadelphia, PA (US);
Abstract
Methods of exchanging ligands to form colloidal nanocrystals (NCs) with chalcogenocyanate (xCN)-based ligands and apparatuses using the same are disclosed. The ligands may be exchanged by assembling NCs into a thin film and immersing the thin film in a solution containing xCN-based ligands. The ligands may also be exchanged by mixing a xCN-based solution with a dispersion of NCs, flocculating the mixture, centrifuging the mixture, discarding the supernatant, adding a solvent to the pellet, and dispersing the solvent and pellet to form dispersed NCs with exchanged xCN-ligands. The NCs with xCN-based ligands may be used to form thin film devices and/or other electronic, optoelectronic, and photonic devices. Devices comprising nanocrystal-based thin films and methods for forming such devices are also disclosed. These devices may be constructed by depositing NCs on to a substrate to form an NC thin film and then doping the thin film by evaporation and thermal diffusion.