Insertion of lithium into electrochromic devices after completion

摘要

The present disclosure describes methods of inserting lithium into an electrochromic device after completion. In the disclosed methods, an ideal amount of lithium can be added post-fabrication to maximize or tailor the free lithium ion density of a layer or the coloration range of a device. Embodiments are directed towards a method to insert lithium into the main device layers of an electrochromic device as a post-processing step after the device has been manufactured. In an embodiment, the methods described are designed to maximize the coloration range while compensating for blind charge loss.

主权项

1. A method to insert ions into device layers of a solid state electrochromic device, comprising:
fabricating an electrochromic device with an initial concentration of ions: the electrochromic device including: an electrochromic layer; one or more top layers disposed on a top side of the electrochromic layer; and one or more bottom layers disposed on a bottom side of the electrochromic layer; wherein the electrochromic device has an operable coloration range of at least 5%, and further wherein the electrochromic device has at least a bleach state and a color state, the bleach state being more transparent than the color state; after fabricating the electrochromic device, conducting at least one test on the electrochromic device, wherein the test includes measuring at least one material property of the electrochromic device during the test; after conducting the at least one test, depositing a quantity of the ions onto a surface of the electrochromic device based on the measured material property; and after depositing the quantity of ions, electrically driving the quantity of the ions into at least one of the one or top layers or the one or more bottom layers of the electrochromic device.