uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Transparent Back Contacts for Superstrate (AG,CU)(IN,GA)SE2 Thin Film Solar Cells
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
2015 (English)In: IEEE Journal of Photovoltaics, ISSN 2156-3381, E-ISSN 2156-3403, Vol. 5, no 1, 406-409 p.Article in journal (Refereed) Published
Abstract [en]

Molybdenum oxide (MoO3) and tungsten oxide (WO3) are considered as transparent back contacts for (Ag,Cu)(In,Ga)Se-2 thin film solar cells. MoO3 and WO3 films were deposited by reactive RF sputtering at room temperature in an Ar/O-2 ambient on (Ag,Cu)(In,Ga) Se-2 absorber layers with various Ga/(Ga + In) and Ag/(Ag + Cu) ratios. Determination of the valence band offsets by XPS showed that Ag-alloying of absorber layer changes the energy band alignment at the absorber-back contact interface with MoO3 and WO3 contacts. This produces a primary contact with lower valence band offset compared with Cu(In,Ga) Se-2 counterparts. The effect is less significant in films with Ga > 0.5 and Ag > 0.5 (corresponding to E-g > 1.4 eV) probably due to the different nature of ordered vacancy compounds forming near the surface phases.

Place, publisher, year, edition, pages
2015. Vol. 5, no 1, 406-409 p.
Keyword [en]
Back contact, oxide, solar cell, XPS
National Category
Environmental Engineering
Research subject
Engineering Science with specialization in Electronics
URN: urn:nbn:se:uu:diva-243441DOI: 10.1109/JPHOTOV.2014.2365469ISI: 000346732700061OAI: oai:DiVA.org:uu-243441DiVA: diva2:788102
Available from: 2015-02-12 Created: 2015-02-09 Last updated: 2015-06-30Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Larsen, J. K.
By organisation
Solid State Electronics
In the same journal
IEEE Journal of Photovoltaics
Environmental Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 422 hits
ReferencesLink to record
Permanent link

Direct link