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Per Erik Vullum

Seniorforsker

Per Erik Vullum

Seniorforsker

Per Erik Vullum
Telefon: 930 16 522
Mobil: 930 16 522
Avdeling: Materialer og nanoteknologi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

TEM characterization of pure and transition metal enhanced NaAlH4

http://www.sintef.no/publikasjoner/publikasjon/?pubid=SINTEF+S17545

Possibilities and limitations in using transmission electron microscopy to characterize pure NaAlH4 and transition metal enhanced NaAlH4 have been investigated in detail. NaAlH4 is extremely sensitive to O-2 and H2O and must be handled under inert atmosphere at all times. Furthermore, it is highly u...

Forfattere Vullum Per Erik Pitt MP Walmsley John Charles Hauback BC Holmestad R
År 2011
Type Tidsskriftsartikkel
Publikasjon

Positioning effects on quantum dot solar cells grown by molecular beam epitaxy

http://www.sintef.no/publikasjoner/publikasjon/?pubid=SINTEF+S17544

We report current-voltage and spectral response characteristics of high density InAs/GaAs quantum dot (QD) solar cells with different positions where dots are located. The short circuit current density (J(sc)), open circuit voltage (V-oc), and external quantum efficiency of these cells under air mas...

Forfattere Zhou D Vullum Per Erik Sharma G Thomassen SF Holmestad R Reenaas TW Fimland BO
År 2010
Type Tidsskriftsartikkel
Publikasjon

TEM analysis of catalyst and energy storage materials

http://www.sintef.no/publikasjoner/publikasjon/?pubid=SINTEF+S17581

Transmission electron microscopy (TEM) is an essential tool in the study of catalyst and hydrogen storage materials. Two fundamental obstacles are the reactivity with the atmosphere, which make sample handling and transfer procedures essential, and the stability of the sample under the electron beam...

Forfattere Walmsley John Charles Dehghan-Niri Roya Vullum Per Erik Holmestad Randi Rønnng Magnus Holmen Anders Hauback Bjørn
År 2010
Type Presentasjon
Publikasjon

Modelling of interfaces for high performance solar cell materials

http://www.sintef.no/publikasjoner/publikasjon/?pubid=SINTEF+S17623

The resistance at the metal contact-semiconductor interface and recombination at the passivating layer-semiconductor interface are two important bottlenecks for improving the performance of current solar cells. These processes are quantum mechanical by nature, but so far most studies and attempts to...

År 2010
Type Presentasjon
Publikasjon

Observations of nanoscopic, face centered cubic Ti and TiHx

http://www.sintef.no/publikasjoner/publikasjon/?pubid=SINTEF+S12408

Transmission electron microscopy has been used to study ball milled and H cycled NaAlH4 with 10 mol% TiCl3. Isolated from the main phases in this hydrogen storage system, nanocrystalline aggregates of fcc TiH (x) (0a parts per thousand currency signx < 0.67) were found. The value of x was determi...

Forfattere Vullum Per Erik Pitt Mark Walmsley John Charles Hauback Bjørn Holmestad Randi
År 2009
Type Tidsskriftsartikkel
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