Solid-State Conversion Reaction to Enhance Charge Transfer in Electrochromic Materials

Feng Lin, Dennis Nordlund, Tsu Chien Weng, Rob G. Moore, Dane T. Gillaspie, Kim M. Jones, Anne C. Dillon, Ryan M. Richards, Chaiwat Engtrakul

Research output: Contribution to journalArticlepeer-review

6 Scopus Citations

Abstract

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 (Li2O2) is presented for an electrochromic device. We demonstrate that efficient lithium insertion and electron transport can be achieved by the inclusion of a Li2O2-rich interlayer between an active electrochromic material and Li ion solid-state electrolyte layer. The presence of a Li2O2-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. A solid-state conversion reaction for the development of an interlayer enriched with lithium peroxide is presented for an electrochromic device. The electrochromic performance is significantly improved with this interlayer. This new strategy of enabling interface engineering is applicable to energy storage technologies including thin film batteries.

Original languageAmerican English
Article number1400523
Number of pages6
JournalAdvanced Materials Interfaces
Volume2
Issue number6
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

NREL Publication Number

  • NREL/JA-5900-62804

Keywords

  • charge transfer
  • conversion reaction
  • electrochromic
  • interlayer
  • lithium peroxide

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