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Photochromic properties in Eu3+ doped Sr2SnO4

  • Sunao Kamimura (a1), Hiroshi Yamada (a1) (a2) and Chao-Nan Xu (a1) (a2) (a3)

Abstract

We report the photochromism (PC) in Eu3+ doped Sr2SnO4. The Sr2SnO4:Eu3+ is sensitive to UV light (λ < 350 nm) and turns to purple color. When visible light (λ= 400-700 nm) is irradiated, the colored Sr2SnO4:Eu3+ is bleached. From the results of absorption spectrum, Sr vacancies in the host lattice and charge transfer transition between Eu3+-O2- is responsible for PC process of Sr2SnO4:Eu3+.

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