Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • News & Views
  • Published:

CIGS photovoltaics

Carrier concentration resolved

Inhomogeneities in the optoelectronic properties of polycrystalline Cu(In,Ga)Se2 absorbers can limit solar cell performance. Now, researchers quantify the spatial distribution of charge carrier concentration with nanometre resolution and show how different alkali-metal post-deposition treatments reduce the grain-to-grain fluctuations.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Fig. 1: Topography and current maps obtained with c-AFM tomography.


  1. Green, M. A. et al. Prog. Photovolt. 31, 651–663 (2023).

    Article  Google Scholar 

  2. Werner, J. H., Mattheis, J. & Rau, U. Thin Solid Films 480–481, 399–409 (2005).

    Article  ADS  Google Scholar 

  3. Siebentritt, S. et al. Adv. Energy Mater. 10, 1903752 (2020).

    Article  CAS  Google Scholar 

  4. Sharma, D. et al. Nat. Energy (2024).

    Article  Google Scholar 

  5. Luria, J. et al. Nat. Energy 1, 16150 (2016).

    Article  ADS  CAS  Google Scholar 

  6. Song, J., Zhou, Y., Padture, N. P. & Huey, B. D. Nat. Commun. 11, 3308 (2020).

    Article  ADS  CAS  PubMed  PubMed Central  Google Scholar 

  7. Scheer, R. & Schock, H. W. Chalcogenide Photovoltaics: Physics, Technologies, and Thin Film Devices (Wiley‐VCH Verlag, 2011).

  8. Lanzoni, E. M. et al. Nano Energy 88, 106270 (2021).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Alex Redinger.

Ethics declarations

Competing interests

The author declares no competing interests.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Redinger, A. Carrier concentration resolved. Nat Energy 9, 117–118 (2024).

Download citation

  • Published:

  • Issue Date:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing