Spectroscopic effects of disorder and vibrational localization in mixed-halide metal-halide chain solids

Steven P. Love; B. Scott; L. A. Worl; S. C. Huckett; Avadh B. Saxena; X. Z. Huang; Alan R. Bishop; Basil I. Swanson

doi:10.1117/12.148516

2 July 1993 Spectroscopic effects of disorder and vibrational localization in mixed-halide metal-halide chain solids

Steven P. Love, B. Scott, L. A. Worl, S. C. Huckett, Avadh B. Saxena, X. Z. Huang, Alan R. Bishop, Basil I. Swanson

Proceedings Volume 1857, Lasers and Optics for Surface Analysis; (1993) https://doi.org/10.1117/12.148516
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Resonance Raman techniques, together with lattice-dynamics and Peierls-Hubband modelling, are used to explore the electronic and vibrational dynamics of the quasi-one-dimensional metal-halogen chain solids [Pt(en)₂][Pt(en)₂X₂](ClO₄)₄, (en equals C₂H₈N₂ and X equals Cl, Br), abbreviated 'PtX.' The mixed-halide materials PtCl_1-xBr_x and PtCl_1-xI_x consist of long mixed chains with heterojunctions between segments of the two constituent materials. Thus, in addition to providing mesoscale modulation of the chain electronic states, they serve as prototypes for elucidating the properties to be expected for macroscopic heterojunctions of these highly non-linear materials. Once a detailed understanding of the various local vibrational modes occurring in these disordered solids is developed, the electronic structure of the chain segments and junctions can be probed by tuning the Raman excitation through their various electronic resonances.

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Steven P. Love, B. Scott, L. A. Worl, S. C. Huckett, Avadh B. Saxena, X. Z. Huang, Alan R. Bishop, and Basil I. Swanson "Spectroscopic effects of disorder and vibrational localization in mixed-halide metal-halide chain solids", Proc. SPIE 1857, Lasers and Optics for Surface Analysis, (2 July 1993); https://doi.org/10.1117/12.148516

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