Phase change materials for optical disc and display applications

Yuta Saito, Kotaro Makino, Paul Fons

Research output: Chapter in Book/Report/Conference proceedingChapter


One of the most successful applications of chalcogenides glasses is phase change optical discs also known as digital versatile disc-random access memory (DVD-RAM), and Blu-ray discs (BD). The technology relies on a reversible phase change between two phases with significantly different optical properties (optical constants) with chalcogenide materials serving as the workhorse. These chalcogenides (mostly tellurides) exhibiting a reversible amorphous-crystalline transition are often referred to as “phase change materials (PCMs).” PCMs are the key component of optical discs that enables rewritable data recording. Here, in this chapter, we present an overview of phase change optical disc applications, a present day mature industry. Furthermore, we introduce an up-and-coming technology based upon the same class of materials that holds promise for future industrial applications, namely, solid-state reflective displays based upon PCMs.

Original languageEnglish
Title of host publicationWorld Scientific Reference Of Amorphous Materials, The
Subtitle of host publicationStructure, Properties, Modeling And Main Applications (In 3 Volumes)
PublisherWorld Scientific Publishing Co.
Number of pages31
ISBN (Electronic)9789811215933
Publication statusPublished - 2020 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)
  • Chemistry(all)


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