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Pal, U. Piqueras De Noriega, Francisco Javier Serrano, M. D. Sochinskii, N. V. 2023-06-20T19:05:57Z 2023-06-20T19:05:57Z 1995 Pal, U., Piqueras, J., Serrano, M.D. et al. Cathodoluminescence microscopic studies of α-HgI2 platelets and crystals. Appl. Phys. A 61, 645–649 (1995). https://doi.org/10.1007/BF01542877 0721-7250 10.1007/s003390050254 https://hdl.handle.net/20.500.14352/59243 http://dx.doi.org/10.1007/s003390050254 http://link.springer.com CathodoLuminescence studies (CL) have been carried out on red mercuric-iodide (α-HgI_2) crystals and platelets grown by the vapor transport method. Panchromatic CL images revealed inhomogeneous distribution of growth-induced dislocations and terraces. The effect of prolonged KI (20%) treatment on the evolution of different CL bands has been investigated. CL spectra of the platelets at 80 K showed three luminescence bands at about 546, 567 and 624 nm. The intensity of the 567 nm band (band II) decreased after KI treatment, thus indicating the role of I vacancies on the evolution of this band. An additional band at about 555 nm is observed in as-grown crystals, but not revealed in platelets. Increase of the relative intensity of band III (624 nm) on prolonged KI treatment indicates the association of some surface states on this band along with the effect of impurities as reported earlier. Hg treatment causes an increase of total CL intensity and also the relative intensity of band II in platelets and crystals. metadata only access Cathodoluminescence microscopic studies of α-HgI_2 platelets and crystals journal article