Robert Karsthof

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Questions related from Robert Karsthof

Provider for repairs on Boonton 7200 capacitance meter?

In our lab, we are using high-precision Boonton 7200 capacitance meters for space-charge spectroscopy. Boonton has discontinued the production and repair of these devices, however, our lab...

23 September 2020 9,480 0 View

What is the origin of 9eV peak in low-loss EELS on NiO?

Hey microscopy & EELS experts, I have measured EELS on NiO in a TEM in the low-loss region (1-11eV, see attached), with a monochromated beam, 60kV, 0.15eV resolution. Spectra look more or...

23 January 2020 9,203 0 View

Can I calculate the quasi Fermi levels in a p-n junction solar cell in the case of the absorption of a single photon?

We know that the "driving force" that separates photo-generated charge carriers in a solar cell is not merely the built-in potential of the junction, but the gradient of the electrochemical...

15 September 2014 5,622 5 View

High-lying conduction bands vs. vacuum energy level

Hi all! In semiconductors and insulators, photoelectron spectroscopy (PES) and inverse photoemission spectroscopy (IPES) are often used to probe the occupied and unoccupied electronic states,...

01 January 1970 3,525 5 View