Investigation of trapping levels in p-type Zn(3)P(2 )nanowires using transport and optical properties

Author(s)

Lombardi, G. A. ^[1] ; de Oliveira, F. M. ^[2] ; Teodoro, M. D. ^[2] ; Chiquito, A. J. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Fis, NanO LaB, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Fis, Grp Nanoestruturas Semicond, CP 676, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Applied Physics Letters; v. 112, n. 19 MAY 7 2018.
• Web of Science Citations: 3

Abstract

Here, we report the synthesis and structural characterization of high-quality Zn3P2 nanowires via chemical vapour deposition. Structural and morphological characterization studies revealed a reliable growth process of long, uniform, and single-crystalline nanowires. From temperature dependent transport and photoluminescence measurements, we have observed the contribution of different acceptor levels (15, 50, 70, 90, and 197 meV) to the conduction mechanisms. These levels were associated with zinc vacancies and phosphorous interstitial atoms which assigned a p-type character to this semiconductor. From time resolved photoluminescence experiments, a 91 ps lifetime decay was found. Such a fast lifetime decay is in agreement with the exciton transition along the bulk emission from high quality crystalline nanowires. Published by AIP Publishing. (AU)

• FAPESP's process: 13/17639-4 - Obtainment of nanostructured semiconductors: correlation of the photocatalytic properties to their structural characteristic
• Grantee: Waldir Avansi Junior
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18719-1 - Electronic carriers dynamics in semiconductor nanostructures
• Grantee: Marcio Daldin Teodoro
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 16/14381-4 - Semiconducting nanowires for fotovoltaic devices
• Grantee: Adenilson José Chiquito
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/19142-2 - Characterization and processing of semiconductor nanostructures and application as devices
• Grantee: Gilmar Eugenio Marques
• Support Opportunities: Research Projects - Thematic Grants