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Optimization of active-layer thickness, top electrode and annealing temperature for polymeric solar cells

Authors :
Said Karim Shah
Jahangeer Khan
Irfan Ullah
Yaqoob Khan
Source :
AIMS Materials Science, Vol 4, Iss 3, Pp 789-799 (2017)
Publication Year :
2017
Publisher :
AIMS Press, 2017.

Abstract

Organic solar cells, processed from solution at various optimizing device parameters, were investigated. The device’s active-layer film-thicknesses were optimized while depositing at different spin speeds where 120-nm-thick layer (D2) gives maximum power conversion efficiency of 2.9%, annealed at 165 °C. The reason is ascribed as sufficient light absorption, excitons dissociation/diffusion and carriers transportation. In the case of Ca/Al, being as a top electrode rather than LiF/Al and Al, substantial efficiency enhancement, from 1.70% to 2.78%, was obtained at low temperature, 130 °C, providing ease for charge collection and pertaining conductive nature of increased resistivity at high temperature.

Details

Language :
English
ISSN :
23720484
Volume :
4
Issue :
3
Database :
Directory of Open Access Journals
Journal :
AIMS Materials Science
Publication Type :
Academic Journal
Accession number :
edsdoj.804e2cd0c09408f94dd0daa24135c6f
Document Type :
article
Full Text :
https://doi.org/10.3934/matersci.2017.3.789