Optical Spectroscopy of Single Nanowires

Författare: Johanna Trägårdh; Lunds Universitet.; Lund University.; [2008]

Nyckelord: NATURVETENSKAP; NATURAL SCIENCES; core-shell nanowires; GaAs; InP; InAs; photocurrent; nanowire; time-resolved PL; photoluminescence; wurtzite;

Sammanfattning: This thesis describes optical spectroscopy on III-V semiconductor nanowires. The nanowires were grown by metal-organic vapor phase epitaxy (MOVPE) and chemical beam epitaxy (CBE). Photoluminescence and photocurrent spectroscopy are used as tools to investigate issues such as the size of the band gap, the effects of surface states, and the charge carrier transport in core-shell nanowires. The band gap of InAs1-xPx nanowires with wurtzite crystal structure is measured as a function of the composition for 0.15

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