Controlling fluorescence lifetime of rare-earth element in amorphous inorganic solids via very small compositional adjustments

Journal of Applied Physics - Tập 98 Số 2 - 2005
Yong Gyu Choi1, Richard J. Curry2,3, Bong Je Park4, Kyong Hon Kim5, Jong Heo6, D.W. Hewak7
1Hankuk Aviation University Department of Materials Science and Engineering, , Goyang, Gyeonggi 412-791, Republic of Korea
2Advanced Technology Institute, School of Electronics and Physical Sciences, University of Surrey, Guildford GU2 7XH, United Kingdom
3University of Surrey , School of Electronics and Physical Sciences, , Guildford GU2 7XH, United Kingdom
4Electronics and Telecommunications Research Institute Basic Research Laboratory, , Daejeon 305-600, Republic of Korea
5Inha University Department of Physics, , Incheon 402-751, Republic of Korea
6Pohang University of Science and Technology Department of Materials Science and Engineering, , Pohang, Gyeongbuk 790-784, Republic of Korea
7University of Southampton Optoelectronics Research Centre, , Southampton SO17 1BJ, United Kingdom

Tóm tắt

Fluorescence lifetime of hypersensitive 4f-4f transitions of rare-earth elements embedded in amorphous inorganic solids can be dramatically modified by compositional adjustment of the hosts tantamount to not more than 1 mol % without any elaborated thermal treatments. It is possible to modify a spontaneous emission rate of Dy3+:(F11∕26,H9∕26)→H15∕26 transition in chalcogenide Ge–As–S glasses through selective addition of low levels of Ga and CsBr. Along with the change of the spontaneous emission rate, multiphonon relaxation rate involved in the (F11∕26,H9∕26) state also significantly varies upon the minute compositional adjustment. The combination of these effects results in the measured lifetime of the fluorescing (F11∕26,H9∕26) level being greatly enhanced. Such behaviors are attributed to the hypersensitive nature associated with the H15∕26↔F11∕26 transition and preferential coordination of bromine in the nearest-neighboring shell of the Dy3+ ions, which is formed spontaneously during the vitrification process of the host materials. These experimental observations show the most extreme dependence of the fluorescence lifetime on small compositional changes reported compared to any other noncrystalline solid-state dielectric. As such coutilization of many hypersensitive transitions of rare-earth elements and those host materials used in this study may present a unique opportunity to control absorption and emission properties, especially fluorescence lifetimes, through a minute compositional adjustment.

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Tài liệu tham khảo

1946, Phys. Rev., 69, 681, 10.1103/PhysRev.69.37

1970, J. Lumin., 1–2, 693, 10.1016/0022-2313(76)90163-0

2004, Nature (London), 430, 654, 10.1038/nature02772

1998, Phys. Rev. Lett., 80, 5077, 10.1103/PhysRevLett.80.5077

1996, Phys. Rev. A, 54, 5450, 10.1103/PhysRevA.54.5450

1995, Phys. Rev. Lett., 74, 880, 10.1103/PhysRevLett.74.880

1993, Phys. Rev. Lett., 71, 517, 10.1103/PhysRevLett.71.517

1975, Struct. Bonding (Berlin), 22, 83, 10.1007/BFb0116556

Gschneidner, 1998, Handbook on the Physics and Chemistry of Rare Earths, 220

1963, J. Phys. Chem., 67, 1206, 10.1021/j100800a010

1996, Phys. Rev. B, 53, 6186, 10.1103/PhysRevB.53.6186

1999, J. Appl. Phys., 86, 351, 10.1063/1.370737

1991, IEEE Photonics Technol. Lett., 3, 715, 10.1109/68.84462

1994, Electron. Lett., 33, 414, 10.1049/el:19970270

1996, J. Non-Cryst. Solids, 196, 162, 10.1016/0022-3093(95)00579-X

2000, Chem. Phys. Lett., 317, 637, 10.1016/S0009-2614(99)01400-1

1962, Phys. Rev., 128, 2154, 10.1103/PhysRev.128.2154

2000, J. Appl. Phys., 88, 3832, 10.1063/1.1309054

1997, J. Non-Cryst. Solids, 217, 199, 10.1016/S0022-3093(97)00189-0

1999, J. Chem. Phys., 110, 12125, 10.1063/1.479149

2005, Chem. Phys. Lett., 403, 29, 10.1016/j.cplett.2004.12.108

1964, Phys. Rev., 136, 954, 10.1103/PhysRev.136.A954

1962, Phys. Rev., 127, 750, 10.1103/PhysRev.127.750

1962, J. Chem. Phys., 37, 511, 10.1063/1.1701366

W. T. Carnall, H. Crosswhite, and H. M. Crosswhite, Energy level structure and transition probabilities of the trivalent lanthanides in LaF3, Report No. ANL-78-XX-95, Argonne National Laboratory, Chemistry Division, Illinois, 1978.

2003, Phys. Rev. Lett., 91, 203903, 10.1103/PhysRevLett.91.203903

2004, J. Non-Cryst. Solids, 333, 85, 10.1016/j.jnoncrysol.2003.09.042

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Journal of Applied Physics

Tập 98 Số 2

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