Fabrication of a Functionally Graded Copper-Zinc Sulfide Phosphor

Jehong Park, Kwangwon Park, Jongsu Kim, Yongseok Jeong, Akira Kawasaki, Hansang Kwon

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Functionally graded materials (FGMs) are compositionally gradient materials. They can achieve the controlled distribution of the desired characteristics within the same bulk material. We describe a functionally graded (FG) metal-phosphor adapting the concept of the FGM; copper (Cu) is selected as a metal and Cu- and Cl-doped ZnS (ZnS:Cu,Cl) is selected as a phosphor and FG [Cu]-[ZnS:Cu,Cl] is fabricated by a very simple powder process. The FG [Cu]-[ZnS:Cu,Cl] reveals a dual-structured functional material composed of dense Cu and porous ZnS:Cu,Cl, which is completely combined through six graded mediating layers. The photoluminescence (PL) of FG [Cu]-[ZnS:Cu,Cl] is insensitive to temperature change. FG [Cu]-[ZnS:Cu,Cl] also exhibits diode characteristics and photo reactivity for 365 nm -UV light. Our FG metal-phosphor concept can pave the way to simplified manufacturing of low-cost and can be applied to various electronic devices.

Original languageEnglish
Article number23064
JournalScientific reports
Volume6
DOIs
Publication statusPublished - 2016 Mar 14

ASJC Scopus subject areas

  • General

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