Temperature variation of photoluminescence from heavily Cr doped ruby

Ami Hitomi; Toru Katsumata; Hiroaki Aizawa

Presentation information

Oral presentation

15 Crystal Engineering » 15.7 Crystal characterization, impurities and crystal defects

[20a-C202-1~11] 15.7 Crystal characterization, impurities and crystal defects

Tue. Sep 20, 2022 9:00 AM - 12:00 PM C202 (C202)

Hidetoshi Suzuki(Miyazaki Univ.), Kazuhisa Torigoe(SUMCO)

9:00 AM - 9:15 AM

[20a-C202-1] Temperature variation of photoluminescence from heavily Cr doped ruby

〇(M1)Ami Hitomi¹, Toru Katsumata^1,2, Hiroaki Aizawa¹ (1.Toyo Univ., 2.Toyo Inst.)

Keywords:Ruby, Cr concentration, Photoluminescence

Cr doped Al₂O₃ crystal (ruby) is red crystal that emits red photoluminescence (PL) when excited by red, blue, green or ultraviolet light. This PL has been applied as fluorescent materials, fluorescence thermometers. Ruby with Cr concentration above 1.0 mol%, a wide peak thought to be caused by Cr³⁺ clusters can be seen in the near infrared region in addition to the sharp R line at around 694 nm.