Abstract
Ca14Zn6Ga10-xO35:xMn(CZG:xMn) phosphors were synthesized by high temperature solid state reaction. High doping concentration as 30 mol% for Mn ions can be realized in the compounds due to the existence of the multiple valance of Mn ions. Both red emission from Mn4+ and near infrared (NIR) emission from Mn5+ were observed from CZG:xMn phosphors. The energy transfer from Mn4+ ions to Mn5+ ions was detected, which makes it possible for CZG:xMn phosphors to emit 1152 nm light under the excitation of the whole visible light region, especially under the commercial blue chips (450 nm). This means the CZG: xMn phosphors can be used in the manufacture of NIR sources with small size, simple structure and low cost. Because CZG:xMn can be excited by 600 ~ 700 nm and emits 1152 nm, the phosphors show the application in the real-time biochemical detection because of the excellent penetration capacity of biological tissue for 600 ~ 700 nm and 1152 nm light. With the aid of low-temperature PL spectra, it was found that two zero phonon lines and multiple vibration bands are responsible for the five compact emission band from 650 ~ 750 nm of Mn4+ ions. The results are helpful to comprehend the mechanism of the emission of Mn ions in CZG:xMn and promote the phosphors application.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
