Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Default user image.

Martin Magnusson

Ställföreträdande prefekt & studierektor för grundutbildning

Default user image.

High-throughput spectroscopy of semiconductor nanowires in the presence of inhomogeneity

Författare

  • The Univ. Manchester
  • Sudhakar Sivakumar
  • Martin Magnusson
  • Patrick Parkinson

Summary, in English

Controllable doping in semiconductor nanowires is essential for development of optoelectronic devices. Despite great progress, a fundamental challenge remains in controlling the uniformity of doping, particularly in the presence of relatively high levels of geometrical inhomogeneity in bottom-up growth. A relatively high doping level of 1E18 cm-3 corresponds to just ~1000 activated dopants in a 2µm long, 50nm diameter nanowire. High-throughput photoluminescence spectroscopy enables the collection of doping distributions across many (>10k) nanowires, but geometric variation adds additional uncertainty to the modelling. We present an approach that uses large datasets of doping and emission intensity to infer both doping and diameter across a growth, and apply Bayesian methods to study the underlying distributions in Zn-doped aerotaxy-grown GaAs nanowires. This new big-data enabled approach provides a route to exploit inherent inhomogeneity to reveal fundamental recombination mechanisms.

Avdelning/ar

  • Fasta tillståndets fysik
  • NanoLund: Centre for Nanoscience
  • Teknisk fysik (CI)

Publiceringsår

2021-08-01

Språk

Engelska

Sidor

20-20

Dokumenttyp

Konferensbidrag

Ämne

  • Condensed Matter Physics

Conference name

Low-Dimensional Materials and Devices 2021

Conference date

2021-08-01 - 2021-08-05

Status

Published