Carrier Dynamics and Quantum Confinement in type II ZB-WZ InP Nanowire Homostructures
Pemasiri, Kuranananda; Montazeri, Mohammad; Gass, Richard; Smith, Leigh M; Jackson, Howard E; Yarrison-Rice, Jan M; Paiman, Suriati; Gao, Qiang; Jagadish, Chennupati; Zhang, Xin; Zou, Jin; Tan, Hark Hoe
We use time-resolved photoluminescence from single InP nanowires containing both wurtzite (WZ) and zincblende (ZB) crystalline phases to measure the carrier dynamics of quantum confined excitons in a type-ll homostructure. The observed recombination lifetime increases by nearly 2 orders of magnitude from 170 ps for excitons above the conduction and valence band barriers to more than 8400 ps for electrons and holes that are strongly confined in quantum wells defined by monolayer-scale ZB...[Show more]
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