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Isoelectronic Centers in Quantum Dots and Photoluminescence Decay

  • Conference paper
Advanced Nanomaterials and Nanotechnology

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 143))

Abstract

It is hypothesized that Te forms an isoelectronic trap in ZnSe. These isoelectronic centers show blue and green band luminescence at low temperature. Quantum confinement effects reveal isoelectronic trap related luminescence at room temperature in contrast to bulk ZnSe1 − yTey. To find the effect of these isoelectronic center on Mn2+ d–d transition luminescence, Mn doped ZnSe0.99Te0.01 QDs are synthesized. Mn doped ZnSe shows dominating orange emission related to Mn2+ d–d transitions. This Mn emission increases at the cost of band edge emission. Addition of Te as small as 1 % in ZnSe strongly quenches photoluminescence of Mn-doped ZnSe QDs showing predominance of Te-isoelectronic centers. Orange emission and near band edge luminescence in Mn doped ZnSe0.99Te0.01 are not correlated as they are in case of Mn-doped ZnSe QDs. Time resolved photoluminescence and photoluminescence excitation study revealed these isoelectronic center changes the recombination path ways. The changes in relaxation path ways are responsible for distinct emission behavior of ZnSe0.99Te0.01QDs.

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References

  1. A.P. Alivisatos, Semiconductor clusters, nanocrystals, and quantum dots. Science 271, 933 (1996)

    Article  CAS  Google Scholar 

  2. B.O. Dabbousi, J. Rodriguez-Viejo, F.V. Mikulec, J.R. Heine, H. Mattoussi, R. Ober, K.F. Jensen, M.G. Bawendi, (CdSe)ZnS core—shell quantum dots: synthesis and characterization of a size series of highly luminescent nanocrystallites. J. Phys. Chem. B. 101, 9463 (1997)

    Article  CAS  Google Scholar 

  3. Y.C. Lin, W.C. Chou, W.C. Fan, J.T. Ku, F.K. Ke, W.J. Wang, S.L. Yang, W.K. Chen, W.H. Chang, C.H. Chi, Time-resolved photoluminescence of isoelectronic traps in ZnSe1−xTex semiconductor alloys. Appl. Phys. Lett. 93, 241909 (2008)

    Article  Google Scholar 

  4. R. Hill, Energy-gap variations in semiconductor alloy. J. Phys. C: Solid State Phys. 7, 521 (1974)

    Article  CAS  Google Scholar 

  5. J.E. Bernard, A. Zunger, Optical bowing in zinc chalcogenide semiconductor alloys. Phys. Rev. B. 34, 5992 (1986)

    Article  CAS  Google Scholar 

  6. R.E. Bailey, S. Nie, Alloyed semiconductor quantum dots: tuning the optical properties without changing the particle size. J. Am. Chem. Soc. 125, 7100 (2003)

    Article  CAS  Google Scholar 

  7. W. Jiang, A. Singhal, J. Zheng, C. Wang, C.W. Warren, Optimizing the synthesis of red- to near-IR-emitting CdS-capped CdTexSe1–x alloyed quantum dots for biomedical imaging. Chem. Mater. 18, 4845 (2006)

    Article  CAS  Google Scholar 

  8. F.C. Liu, T.L. Cheng, C.C. Shen, W.L. Tseng, M.Y. Chiang, Synthesis of cysteine-capped ZnxCd1−xSe alloyed quantum dots emitting in the blue–green spectral range. Langmuir 24, 2162 (2008)

    Article  CAS  Google Scholar 

  9. T. Yao, M. Kato, J.J. Davis, H. Tanino, Photoluminescence of excitons bound at Te isoelectronic traps in ZnSe. J. Crystal Growth 86, 552 (1988)

    Article  CAS  Google Scholar 

  10. Y. Gu, I.L. Kuskovsky, M. Van der Voort, G.F. Neumark, X. Zhou, M.C. Tamargo, Zn-Se-Te Type-II quantum structures and isoelectronic centers multilayers with submonolayer quantities of Te. Phys. Rev. B. 71, 045340 (2005)

    Article  Google Scholar 

  11. I.L. Kuskovsky, C. Tian, G.F. Neumark, J.E. Spanier, I.P. Herman, W.C. Lin, S.P. Guo, M.C. Tamargo, Optical properties of δ-doped ZnSe:Te grown by molecular beam epitaxy: The role of tellurium. Phys. Rev. B. 63, 155205 (2001)

    Article  Google Scholar 

  12. L.W. Chang, J.H. Cheng, C.H. Hsu, H.Y. Chao, W. Li, Y.H. Chang, K.Y. Chen, Y.F. Chen, C.T. Laing, Isoelectronic centers and type-II quantum dots: Mechanisms for the green band emission in ZnSeTe alloy. J. Appl. Phys. 105, 113511 (2009)

    Article  Google Scholar 

  13. C.S. Yang, D.Y. Hong, C.Y. Lin, W.C. Chou, C.S. Ro, W.Y. Uen, W.H. Lan, S.L. Tu, Optical properties of the ZnSe1 − xTex epilayers grown by molecular beam epitaxy. J. Appl. Phys. 83, 2555 (1998)

    Article  CAS  Google Scholar 

  14. Y. Gong, W. MacDonald, G.F. Neumark, M.C. Tamargo, I.L. Kuskovsky, Optical properties and growth mechanism of multiple type-II ZnTe/ZnSe quantum dots grown by migration-enhanced epitaxy. Phys. Rev. B. 77, 155314 (2008)

    Article  Google Scholar 

  15. M.C.-K. Cheung, A.N. Cartwright, I.R. Sellers, B.D. McCombe, I.L. Kuskovsky, Time-resolved photoluminescence of type-II quantum dots and isoelectronic centers in Zn–Se–Te superlattice structures. Appl. Phys. Lett. 92, 032106 (2008)

    Article  Google Scholar 

  16. S. Mahamuni, A.D. Lad, S. Patole, Photoluminescence properties of manganese doped ZnSe quantum dots. J. Phys. Chem. C. 112, 2271 (2008)

    Article  CAS  Google Scholar 

  17. K.G. Sonawane, CH. Rajesh, M. Temgire, S. Mahamuni, A case study: Te in ZnSe and Mn doped ZnSe quantum dots, Nanotechnology 22, 305702_1–305702_7 (2011)

    Google Scholar 

  18. V.V. Nikesh, A.D. Lad, S. Kimura, S. Nozaki, S. Mahamuni, Electron energy levels in ZnSe quantum dots. J. Appl. Phys. 100, 113520 (2006)

    Article  Google Scholar 

  19. M.A. Hines, P. Guyot-Sionnest, Bright UV-blue luminescent colloidal ZnSe nanocrystals. J. Phys. Chem. B. 102, 3655 (1998)

    Article  CAS  Google Scholar 

  20. M. Nirmal, D.J. Norris, M. Kuno, M.G. Bawendi, A.L. Efros, M. Rosen, Observation of the “Dark exciton” in CdSe quantum dots. Phys. Rev. Lett. 75, 3728 (1995)

    Article  CAS  Google Scholar 

  21. Ch. Rajesh, A.D. Lad, A. Ghangrekar, S. Mahamuni, Exciton recombination dynamics in zinc selenide quantum dots. Solid State Commun. 148, 435 (2008)

    Article  CAS  Google Scholar 

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Acknowledgments

KGS and CR are thankful to BRNS and ISRO-UOP for the financial support respectively. Authors are extremely thankful to Prof. N. Periasamy of TIFR for his interest in the work and several suggestions. We are also thankful to Ms. Madhuri of TIFR for help in recording the TRPL spectra. Authors are also thankful to D. S. T. Unit on Nanoscience, CNQS and D. S. T. FIST program for various characterization facilities.

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Authors and Affiliations

  1. Department of Physics, University of Pune, Ganeshkhind Road, Pune, 411007, India

    Kiran G. Sonawane, Ch. Rajesh & Shailaja Mahamuni

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  1. Kiran G. Sonawane
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  2. Ch. Rajesh
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  3. Shailaja Mahamuni
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Correspondence to Shailaja Mahamuni .

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Editors and Affiliations

  1. Department of Physics, Indian Institute of Technology Guwahati, Guwahati, India

    P. K. Giri , D. K. Goswami  & A. Perumal ,  & 

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Sonawane, K.G., Rajesh, C., Mahamuni, S. (2013). Isoelectronic Centers in Quantum Dots and Photoluminescence Decay. In: Giri, P.K., Goswami, D.K., Perumal, A. (eds) Advanced Nanomaterials and Nanotechnology. Springer Proceedings in Physics, vol 143. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-34216-5_27

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