Cristin-prosjekt-ID: 453915
Sist endret: 15. juli 2015 19:35

Cristin-prosjekt-ID: 453915
Sist endret: 15. juli 2015 19:35
Prosjekt

Longer lifetime and higher efficiency of CZTS thin-film solar cells

prosjektleder

Clas Persson
ved Strukturfysikk ved Universitetet i Oslo

prosjekteier / koordinerende forskningsansvarlig enhet

  • Senter for materialvitenskap og nanoteknologi ved Universitetet i Oslo

Finansiering

  • Norges forskningsråd
    Prosjektkode: 243642

Klassifisering

Vitenskapsdisipliner

Fysikk • Materialteknologi • Nanoteknologi • Kondenserte fasers fysikk

Emneord

Faststoffysikk • Material og nano- forskning • Funksjonelle materialer • Solceller

Kategorier

Prosjektkategori

  • Bidragsprosjekt
  • Grunnforskning

Kontaktinformasjon

Tidsramme

Avsluttet
Start: 1. mai 2015 Slutt: 30. september 2018

Beskrivelse Beskrivelse

Tittel

Longer lifetime and higher efficiency of CZTS thin-film solar cells

Vitenskapelig sammendrag

Thin-film solar cells based on Cu2ZnSn(S,Se)4 and Cu2Zn(Sn,Ge,Si)S4 are developed for affordable sunlight
harvesting with sufficiently high efficiency, long lifetime, and low exploitation of material resources.
We optimize the solar cell efficiency with the profile of S/Se, Sn/Ge and Sn/Si gradients in depth, and
we investigate the degradation processes, as well as the positive or detrimental impacts on the device
performance due to structural disordering and local defect formations. <br>
Four scientifically intertwined work packages comprise the project objectives that combine synthesis and
device prototyping with structural, electrical and optical characterization together with supporting
calculations/simulations. This involves temperature dependent IV coupled to device modeling, with characterization
of films by transmittance, reflectance, ellipsometry, and PL. Compositional and impurity profiling obtained by
RBS and SIMS, phase analysis by XRD and Raman scattering, and
analysis of open volume defects by positron annihilation spectroscopy. Defect calculations and diffusion modeling are
performed by means of density functional and molecular dynamics. The project outcome will be a fundamental understanding
of material/defects physics, degradation mechanisms, and stability of solar cell performance. <br>
The project is carried out
in two research groups at the Dept of Physics, Univ of Oslo, linked to the Centre for Materials Science and Nanotechnology,
and also at the Angstrom Lab, as well as national high-performance computing centers through NOTUR.

prosjektdeltakere

prosjektleder

Clas Persson

  • Tilknyttet:
    Prosjektleder
    ved Strukturfysikk ved Universitetet i Oslo

Charlotte Platzer-Björkman

  • Tilknyttet:
    Prosjektdeltaker
    ved Uppsala universitet

Bengt Gunnar Svensson

  • Tilknyttet:
    Prosjektdeltaker
    ved Halvlederfysikk ved Universitetet i Oslo

Lasse Vines

  • Tilknyttet:
    Prosjektdeltaker
    ved Halvlederfysikk ved Universitetet i Oslo
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Resultater Resultater

Native defects in Cu(In,Ga)Se2 and Cu2ZnSn(S,Se)4.

Persson, Clas. 2015, 28th International Conference on Defects in Semiconductors. UIO, KThVitenskapelig foredrag

Exploring the optical properties of Cu-based alloys.

Chen, Rongzhen; Persson, Clas. 2015, 2015 E-MRS Spring Meeting. UIO, KThVitenskapelig foredrag

Analyzing the Quantum Efficiency of Cu-Based Compounds for Thin-Film Solar Cells.

Chen, Rongzhen; Persson, Clas. 2015, 8th International Conference on Materials for Advanced Technologies (ICMAT2015). UIO, KThVitenskapelig foredrag
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