Enhanced visible and near infrared emissions via Ce3+ to Ln3+ energy transfer in Ln3+-doped CeF3 nanocrystals (Ln = Nd and Sm). Issue 1 (30th November 2015)

• Record Type: Journal Article
• Authors: Samanta, Tuhin; Sarkar, Shyam; Adusumalli, Venkata. N. K. B.; Praveen, Athma E.; Mahalingam, Venkataramanan
• Is Part Of: Dalton transactions. Volume 45:Issue 1(2016)
• Page Start: 78
• Page End: 84
• Publication Date: 2015-11-30
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt02974k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : We report the enhancement of both visible and near infrared (NIR) emissions from Nd 3+ ions via Ce 3+ sensitization in colloidal nanocrystals for the first time. Abstract : We report the enhancement of both visible and near infrared (NIR) emissions from Nd 3+ ions via Ce 3+ sensitization in colloidal nanocrystals for the first time. This is achieved in citrate capped Nd 3+ -doped CeF3 nanocrystals under ultraviolet (UV) irradiation ( λ ex = 282 nm). The lasing transition ( 4 F3/2 → 4 I11/2 ) at 1064 nm from Nd 3+ -doped CeF3 nanocrystals has much higher emission intensity via Ce 3+ ion sensitization compared to the direct excitation of Nd 3+ ions. The nanocrystals were prepared using a simple microwave irradiation route. Moreover, the study has been extended to Sm 3+ -doped CeF3 nanocrystals which show strong characteristic emissions of Sm 3+ ions via energy transfer from Ce 3+ ions. The energy transfer mechanism from Ce 3+ to Nd 3+ and Sm 3+ ions is proposed.