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Deutscher MBE Workshop 2011

Wir danken allen Teilnehmern und Teilnehmerinnen für einen interessanten und stimulierenden Workshop:

05. - 06.10.2011, Jerusalemkirche, Berlin

Deutscher MBE Workshop

Wir setzen das erfolgreiche Format dieser Reihe von Veranstaltungen fort, die zuletzt in Bochum (2009), Zürich (2008) und Jülich (2007) abgehalten wurden.

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International workshop on atomic-scale manipulation and spectroscopy (AMS 2011)

The workshop was held on October 13 and 14, 2011, at NTT Atsugi R&D center.

The workshop is organized by NTT, Japan and PDI, Germany.

We thank all participants who made this workshop a real success!

Workshop webpage
Impressum

gesetzlich vorgesehene Pflichtangaben zur Kennzeichnung und rechtliche Hinweise zur Internetpräsenz (2010)

PL spectroscopy laboratory

The spectroscopy laboratory is used for photoluminescence (PL), PL excitation (PLE), photocurrent (PC), and photoreflectance (PR) spectroscopy covering a wide spectral range for materials investigated in the institute. The samples mounted in a He-flow cryostat can be investigated at temperatures between 4 and 500 K. The experiments range from routine characterization of semiconductor heterostructures to studies of the electric-field dependent population of subbands in quantum-cascade structures for which a high level of stray-light rejection is required. Tunable excitation sources allow for the investigation of energy-dependent carrier transport.

Specifications of the PL spectroscopy laboratory

PL spectra of an undoped MIR quantum-cascade structure:

PL spectroscopy 1Grey-scale presentation of normalized, electric-field-dependent PL spectra showing the conduction band ground state and the lower laser level below as well as above a critical field strength for (a) excitation at 1.55 eV and (b) at 1.70 eV, i.e. the anti-Stokes and the Stokes configuration, respectively. For comparison, the calculated transition energies are indicated.

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