Patent ID: 9515209
Filing Date: 2016-12-06
CPC Classification: H01L

Claim Text:
1. A method for making a thin film device, comprising the steps: providing quantum dots comprising group IV-VI elements, wherein the quantum dots contain a ligand; atomizing the quantum dots; washing the ligand from the quantum dots, further comprising atomizing the washed quantum dots; doping the atomized and washed quantum dots, wherein the doping further comprises: transferring the doped quantum dots to a deposition spray device; applying the quantum dots to a piezoelectric substrate, wherein the quantum dots are applied by spraying or charged deposition, wherein charged deposition further comprises: annealing the quantum dots to the piezoelectric substrate to form a bare quantum dot superlattice, wherein the annealing is performed using an alternating electric current, a direct current, thermal modulation, or a combination thereof.