Confinement in PbSe wires grown by rf magnetron sputtering

Autor:	Michael A. Stroscio, Hyeson Jung, Mitra Dutta, Rade Kuljic
Rok vydání:	2010
Předmět:	Materials science Photoluminescence Physics and Astronomy (miscellaneous) Silicon business.industry Analytical chemistry Nanowire chemistry.chemical_element Sputter deposition chemistry.chemical_compound Band bending chemistry Quantum dot Optoelectronics business Lead selenide Surface states
Zdroj:	Applied Physics Letters. 96:153106
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.3400215
Popis:	Lead selenide (PbSe) nanowires were grown by magnetron sputtering on silicon with silicon dioxide (SiO2/Si) substrates, and characterized by scanning electron microscopy, x-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence, and x-ray photoelectron spectroscopy. Closely packed PbSe nanowires of approximately 100 nm diameter grew in the ⟨111⟩ rock-salt cubic structure orientation. These large wires showed a large blueshift in the luminescence and absorption compared to the bulk crystal, demonstrating quantum confinement. This is attributed to a strong built-in field due to surface states, band bending, and a depletion layer which confines the carrier states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c263b17a8f59cb8ce777567271872664 https://doi.org/10.1063/1.3400215 Zobrazit plný text záznamu