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Chang, Yia-Chung Li, Liang-Xin 2012-05-31T22:30:32Z 2012-05-31T22:30:32Z 10000-01-01 2001 We have studied the band and optical properties of self-assembled quantum wires. In particular, the band structures and optical matrix elements of strained multiple quantumwires (QWR's) are investigated theoretically via the effective bond-orbital model(EBOM), which takes into account the effects of valence-band anisotropy and the band mixing. It is found that the strain leads to further confinement of carriers and enhancement of the anisotropy. By using the EBOM and valence-force field model, we systematically studied the microstrain effects on the electronic and optical properties of Ga(1-x)In(x)As self-assembled quantumwires (QWR's) made of short-period superlattices with strain-induced lateral ordering. Valenceband anisotropy, band mixing, and effects due to local strain distribution at the atomistic level are all taken into account. A comprehensive collection of different structures in our model are presented. Finally, the excitonic absorption spectrum for the SILO quantum wires are investigated by using our envelope function model. Submitted by William Weathers (weathrs2@illinois.edu) on 2012-05-31T22:30:32Z No. of bitstreams: 1 2001_li.pdf: 3352262 bytes, checksum: 75622236d00ebbb3504e826c6bb22a49 (MD5) Made available in DSpace on 2012-05-31T22:30:32Z (GMT). No. of bitstreams: 1 2001_li.pdf: 3352262 bytes, checksum: 75622236d00ebbb3504e826c6bb22a49 (MD5) Previous issue date: 2001 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Weathers (weathrs2@illinois.edu) on 2012-05-31T22:30:32Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:10:53-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only http://hdl.handle.net/2142/31316 4423492 en ©2001 Li quantum-wires (QWR) effective bond-orbital model (EBOM) Electronic and Optical Properties of Self-Assembled Quantum Wires Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.