Potential effect of CuInS2/ZnS core-shell quantum dots on P3HT/PEDOT:PSS heterostructure based solar cell

•CuInS2/ZnS QDs were prepared by solvothermal method.•Energy levels are evaluated by UPS.•Architectures of different wt.% of CuInS2/ZnS QDs hybrid bulk heterojunction solar cells are investigated.•Photovoltaic parameters show the enhancement in power conversion efficiency as the acceptor content inc...

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Bibliographic Details
Published in:Optics and laser technology 2018-07, Vol.103, p.212-218
Main Authors: Jindal, Shikha, Giripunje, S.M.
Format: Article
Language:English
Subjects:
CuInS2/ZnS
Current density – voltage
Quantum dots
UPS
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Summary:•CuInS2/ZnS QDs were prepared by solvothermal method.•Energy levels are evaluated by UPS.•Architectures of different wt.% of CuInS2/ZnS QDs hybrid bulk heterojunction solar cells are investigated.•Photovoltaic parameters show the enhancement in power conversion efficiency as the acceptor content increases. Nanostructured quantum dots (QDs) are quite promising in the solar cell application due to quantum confinement effect. QDs possess multiple exciton generation and large surface area. The environment friendly CuInS2/ZnS core-shell QDs were prepared by solvothermal method. Thus, the 3 nm average sized CuInS2/ZnS QDs were employed in the bulk heterojunction device and the active blend layer consisting of the P3HT and CuInS2/ZnS QDs was investigated. The energy level information of CuInS2/ZnS QDs as an electron acceptor was explored by ultra violet photoelectron spectroscopy. Bulk heterojunction hybrid device of ITO/PEDOT:PSS/P3HT: (CuInS2/ZnS QDs)/ZnO/Ag was designed by spin coating approach and its electrical characterization was investigated by solar simulator. Current density – voltage characteristics shows the enhancement in power conversion efficiency with increasing concentration of CuInS2/ZnS QDs in bulk heterojunction device.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2018.01.047