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Minority lifetime and efficiency improvement for CZTS solar cells via Cd ion soaking and post treatment.
- Source :
-
Journal of Alloys & Compounds . Jun2018, Vol. 750, p328-332. 5p. - Publication Year :
- 2018
-
Abstract
- Short minority carrier lifetime and low open circuit voltage (Voc) are key issues limiting the current efficiency development for Cu 2 ZnSnS 4 (CZTS) thin film solar cells. This work presents the use of Cd ion soaking and post-heat treatment to increase the lifetime and Voc of CZTS. The time-resolved photoluminescence (TRPL) results confirmed that Cd ion soaking and post heat treatment is effective in enhancing the minority lifetime, from ∼10 ns up to ∼28 ns. With analyses of the current density- voltage (J-V) curves and external quantum efficiency (EQE) data, Cd ion soaking and subsequent post heat treatment is found to greatly reduce the recombination and improve the junction quality, contributing to a ∼70 mV Voc enhancement and resulting in the increased device efficiency of 7.6%, from 5.9%. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 750
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 129273250
- Full Text :
- https://doi.org/10.1016/j.jallcom.2018.03.401