TY  - JOUR
AU  - Fevola, Giovanni
AU  - Ossig, Christina Sonja
AU  - Verezhak, Mariana
AU  - Garrevoet, Jan
AU  - Guthrey, Harvey L.
AU  - Seyrich, Martin
AU  - Brueckner, Dennis Bjoern
AU  - Hagemann, Johannes
AU  - Seiboth, Frank
AU  - Schropp, Andreas
AU  - Falkenberg, Gerald
AU  - Joergensen, Peter
AU  - Slyamov, Azat
AU  - Balogh, Zoltan I.
AU  - Strelow, Christian
AU  - Kipp, Tobias
AU  - Mews, Alf
AU  - Schroer, Christian
AU  - Nishiwaki, Shiro
AU  - Carron, Romain
AU  - Andreasen, Jens Wenzel
AU  - Stückelberger, Michael
TI  - 3D and Multimodal X‐Ray Microscopy Reveals the Impact of Voids in CIGS Solar Cells
JO  - Advanced science
VL  - 11
IS  - 2
SN  - 2198-3844
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2023-01406
SP  - 2301873
PY  - 2023
N1  - L:MB
AB  - Small voids in the absorber layer of thin-film solar cells are generally suspected to impair photovoltaic performance. They have been studied on Cu(In,Ga)Se<sub>2</sub> cells with conventional laboratory techniques, albeit limited to surface characterization and often affected by sample-preparation artifacts. Here, synchrotron imaging is performed on a fully operational as-deposited solar cell containing a few tens of voids. By measuring operando current and X-ray excited optical luminescence, the local electrical and optical performance in the proximity of the voids are estimated, and via ptychographic tomography, the depth in the absorber of the voids is quantified. Besides, the complex network of material-deficit structures between the absorber and the top electrode is highlighted. Despite certain local impairments, the massive presence of voids in the absorber suggests they only have a limited detrimental impact on performance.
LB  - PUB:(DE-HGF)16
C6  - 38009788
UR  - <Go to ISI:>//WOS:001120685600001
DO  - DOI:10.1002/advs.202301873
UR  - https://bib-pubdb1.desy.de/record/580737
ER  -