Depth profiling of boron in ultra-shallow junction devices using time-of-flight neutron depth profiling (TOF-NDP)

Sacit M. Çetiner, Kenan Ünlü

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In conventional neutron depth profiling (NDP), residual energies of particles are measured directly by using a semiconductor detector. The measured depth resolution is a function of the material composition as well as a function of the energy resolution of the detector and precision of the measurement electronics. The uncertainty from the substrate is inevitable. However, for relatively thin layers, the predominant uncertainty factor in depth resolution is the metallic layer in front of the semiconductor-charged particle detector. The effect of the layer introduces additional straggling to the particle. Time-of-flight neutron depth profiling (TOF-NDP) is presented to eliminate the need to use semiconductor detectors. Particle energy can be determined from the particle arrival time. Energy resolution improvement achieved with TOF-NDP makes it possible to obtain concentration vs. depth profile of boron in ultra-shallow junction devices.

Original languageEnglish (US)
Pages (from-to)148-152
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume579
Issue number1
DOIs
StatePublished - Aug 21 2007

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Depth profiling
Boron
Semiconductor detectors
Neutrons
boron
neutrons
Particle detectors
Charged particles
detectors
Electronic equipment
Semiconductor materials
Detectors
radiation counters
Substrates
Chemical analysis
particle energy
arrivals
energy
charged particles
Uncertainty

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

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abstract = "In conventional neutron depth profiling (NDP), residual energies of particles are measured directly by using a semiconductor detector. The measured depth resolution is a function of the material composition as well as a function of the energy resolution of the detector and precision of the measurement electronics. The uncertainty from the substrate is inevitable. However, for relatively thin layers, the predominant uncertainty factor in depth resolution is the metallic layer in front of the semiconductor-charged particle detector. The effect of the layer introduces additional straggling to the particle. Time-of-flight neutron depth profiling (TOF-NDP) is presented to eliminate the need to use semiconductor detectors. Particle energy can be determined from the particle arrival time. Energy resolution improvement achieved with TOF-NDP makes it possible to obtain concentration vs. depth profile of boron in ultra-shallow junction devices.",
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