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Solid‐State Conversion Reaction to Enhance Charge Transfer in Electrochromic Materials
Author(s) -
Lin Feng,
Nordlund Dennis,
Weng TsuChien,
Moore Rob G.,
Gillaspie Dane T.,
Jones Kim M.,
Dillon Anne C.,
Richards Ryan M.,
Engtrakul Chaiwat
Publication year - 2015
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201400523
Subject(s) - electrochromism , materials science , electrochromic devices , lithium (medication) , electrolyte , thin film , fabrication , energy conversion efficiency , nanotechnology , optoelectronics , chemical engineering , electrode , chemistry , medicine , alternative medicine , engineering , pathology , endocrinology
Interface engineering has attracted great interest and is essential for the fabrication of thin‐film devices, such as smart windows. In this study, a solid‐state conversion reaction for the development of an interlayer enriched with lithium peroxide (Li 2 O 2 ) is presented for an electrochromic device. We demonstrate that efficient lithium insertion and electron transport can be achieved by the inclusion of a Li 2 O 2 ‐rich interlayer between an active electrochromic material and Li ion solid‐state electrolyte layer. The presence of a Li 2 O 2 ‐rich interlayer enhances electrochromic efficiency, kinetics, optical contrast, and bleached‐state transparency in a nickel oxide‐based electrochromic thin film. This work opens up new opportunities to enhance the functionalities of thin‐film devices by solid‐state conversion reactions.