A fruitful demonstration in sensors based on upconversion luminescence of Yb3+/Er3+codoped Sb2O3-WO3-Li2O (SWL) glass-ceramic. (22nd July 2016)

• Record Type: Journal Article
• Authors: Sukul, Prasenjit Prasad; Kumar, Kaushal
• Is Part Of: Materials research express. Volume 3:Number 7(2016)
• Publication Date: 2016-07-22
• Subjects: upconversion -- temperature sensor -- fingerprint detection -- solar cell concentrators; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/3/7/076207
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: In this article, erbium and ytterbium doped lithium tungsten antimonate (Yb 3+ /Er 3+ :Sb2 O3 -WO3 -Li2 O) glass-ceramics (GC) is synthesized and its novel applications in temperature sensing and detection of latent fingerprints is studied. It is also estimated that this material could be useful as a solar cell concentrator. The upconversion emission studies on Yb 3+ /Er 3+ :SWL glass-ceramics have shown intense green emission at 525 nm ( 2 H11/2 → 4 I15/2 ) & 545 nm ( 4 s3/2 → 4 I15/2 ). The variation of UC intensities with external temperature have shown a well-fashioned pattern, which suggests that the 2 H11/2 and 4 S3/2 levels of Er 3+ ion are thermally coupled and can act as a temperature sensor in the 300–500 K temperature range. Dry powder of Yb 3+ /Er 3+ :SWL glass-ceramic is used to develop latent fingerprint with high contrast in green color on glass slide.