The fox and the hound: In-depth and in-grain Na doping and Ga grading in Cu(In,Ga)Se2 solar cells
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
9
Series
Journal of Materials Chemistry. A, Volume 8, issue 14, pp. 6471-6479
Abstract
Cu(In,Ga)(S,Se)2 (CIGS) thin film solar cells require appropriate depth and lateral distributions of alkali metal dopants and gallium to attain world record photovoltaic energy conversion. The two requirements are interdependent because sodium is known to hamper In/Ga interdiffusion in polycrystalline films. However, such a fact is challenged by recent findings where sodium appears to enhance In/Ga interdiffusion in monocrystalline films. This contribution reviews closely the two cases to the benefits of grain boundary engineering in CIGS. A computational model reveals why Na induces In accumulation at CIGS grain boundaries, confining Ga to grain interiors. The positive technological implications for wider gap chalcopyrites are stressed.Description
| openaire: EC/H2020/713640/EU//NanoTRAINforGrowthII
Keywords
Other note
Citation
Colombara, D, Conley, K, Malitckaya, M, Komsa, H P & Puska, M J 2020, 'The fox and the hound : In-depth and in-grain Na doping and Ga grading in Cu(In,Ga)Se 2 solar cells', Journal of Materials Chemistry. A, vol. 8, no. 14, pp. 6471-6479. https://doi.org/10.1039/d0ta01103g