| AVS 61st International Symposium & Exhibition | |
| Thin Film | Wednesday Sessions |
| Session TF+EM+EN-WeA |
| Session: | Thin Film and Nanostructured Coatings for Light Trapping, Extraction, and Plasmonic Applications |
| Presenter: | Hao Wang, Brigham Young University |
| Authors: | H. Wang, Brigham Young University R. Gates, Brigham Young University N. Madaan, Brigham Young University J. Bagley, Brigham Young University A. Diwan, Brigham Young University A. Pearson, Brigham Young University S. Jamieson, Brigham Young University K. Laughlin, Brigham Young University Y. Liu, Lehigh University B. Lunt, Brigham Young University M. Asplund, Brigham Young University V. Shutthanandan, Pacific Northwest National Laboratory R.C. Davis, Brigham Young University M.R. Linford, Brigham Young University |
| Correspondent: | Click to Email |
Recently we have prepared novel write–once–read–many (WORM) optical stacks on Mylar for archival data storage in an optical tape format.1 Here, a nanoscale, co-sputtered bismuth–tellurium–selenium (BTS) alloy was employed as the write layer with carbon protective layers on both the top and bottom of the BTS film. We have successfully written information (matrix of marks) on the C/BTS/C optical stack using a 532 nm laser. Both the optical stack structure (film thickness) and writing conditions (laser power and laser spot size) have been optimized. Films were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry, scanning electron microscopy, spectroscopic ellipsometry, and atomic force microscopy.2, 3
We have also recently developed novel WORM solid-state memory elements. These consisted of nanoscale, bowtie-like sputtered carbon films to which a voltage (ca. 10 V) is applied. These fuses have been successfully blown, and the carbon fuse shape, thickness of the carbon layer, and writing voltage have been optimized. Other aspects of the device are currently being optimized.
References
[1] Wang, H.; Lunt, B.M.; Gates, R.J.; Asplund, M.C.; Shutthanandan, V.; Davis, R.C.; Linford, M.R. Carbon/ternary alloy/carbon optical stack on Mylar as an optical data storage medium to potentially replace magnetic tape, ACS Appl. Mater. Interfaces, 2013, 5, 8407-8413.
[2] Wang, H.; Diwan, A.; Lunt, B.M.; Davis, R.C.; Linford, M.R. XPS and SIMS characterization of a BiTeSe write layer for permanent optical tape storage, Proceedings of ISOM 2013, ISOM 2013 International Conference, Incheon, South Korea, 2013.
[3] Wang, H.; Lunt, B.M.; Davis, R.C.; Linford, M.R. Simulation of laser writing on Bi-Te-Se alloy/carbon/Mylar pemanent optical storage tape, ISOM 2013 International Conference, Incheon, South Korea, 2013.