Structural and spectroscopic investigation of an efficient and broadband NIR phosphor InBO3: Cr3+ and its application in NIR pc-LEDs. Issue 10 (15th May 2021)

• Record Type: Journal Article
• Authors: Sun, Zishan; Ning, Qixia; Zhou, Weiying; Luo, Jiabao; Chen, Peican; Zhou, Liya; Pang, Qi; Zhang, Xinguo
• Is Part Of: Ceramics international. Volume 47:Issue 10(2021)Part A
• Page Start: 13598
• Page End: 13603
• Publication Date: 2021-05-15
• Subjects: Near-infrared phosphor -- Broadband emission -- Cr3+ doping -- NIR LED; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.01.218
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A broadband NIR phosphor Cr 3+ -doped InBO3 was successfully prepared and systematically investigated. XRD refinement result reveals that Cr 3+ ions locate the octahedral InO6 site in the InBO3 host. Under low crystal field strength ( D q / B = 1.78), InBO3 : Cr 3+ phosphor exhibits a broadband NIR emission at 820 nm (QE = 46.3%, FWHM = 138 nm) and has a high emission thermal stability, i.e. T 1/2 = ~150 °C. The pc-LED prototype using InBO3 : Cr 3+ phosphor shows a high NIR output power of 37.5 mW with high conversion efficiency of 10.42%. Thus, the efficient broadband NIR emission makes Cr 3+ -doped InBO3 a good candidate as converted phosphor for high-power broadband NIR sources emitting in the NIR-I region.