Publication Cover
High Pressure Research
An International Journal
Volume 29, 2009 - Issue 2
118
Views
3
CrossRef citations to date
0
Altmetric
Original Articles

Pressure effects on the crystal field and luminescence Stokes shift of Mn2+ (Td) in [(CH3)4N]2MnX4 (X: Cl, Br) by time-resolved spectroscopy

, &
Pages 230-234 | Received 03 Sep 2008, Published online: 21 May 2009
 

Abstract

This work investigates the Mn2+ electronic structure and photoluminescence (PL) in [(CH3)4N]2MnCl4 and [(CH3)4N]2MnBr4 and their variation with pressure by time-resolved excitation and emission spectra in the 0–10 GPa range. We show that both the crystal-field excitation and corresponding PL bands experience large-pressure redshifts (about 5 nm/GPa), which are associated with the high crystal compressibility and the interaction between organic/inorganic ([CH3]4N/MnX) tetrahedra. The energy variation as a function of pressure is explained in terms of the isolated Td MnX in the respective crystals through crystal-field models. One salient feature is the reduction of the PL Stokes shift with pressure in both crystals as−1.0 and−1.7 nm/GPa for chloride and bromide, respectively.

This paper was presented at the XLVIth European High Pressure Research Group (EHPRG 46) Meeting, Valencia (Spain), 7–12 September, 2008.

Acknowledgements

Financial support from the Spanish MEC (Project No. MAT2005-00099) and MALTA INGENIO-CONSOLIDER 2010 (Ref. CDS2007-0045) are acknowledged. Y. Rodríguez-Lazcano and L. Nataf thank financial support from the Mobility Program (Ref. SB2005-0201) and Postdoctoral fellowship from the University of Cantabria, respectively.

Notes

This paper was presented at the XLVIth European High Pressure Research Group (EHPRG 46) Meeting, Valencia (Spain), 7–12 September, 2008.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 1,965.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.