High Performance PbS Quantum Dot/Graphene Hybrid Solar Cell with Efficient Charge Extraction.
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Authors
Kim, Byung-Sung
Neo, Darren CJ
Park, Jong Bae
Zhang, Nanlin
Hong, John
Pak, Sangyeon
Lee, Sanghyo
Sohn, Jung Inn
Assender, Hazel E
Watt, Andrew AR
Cha, SeungNam
Kim, Jong Min
Publication Date
2016-06-08Journal Title
ACS Appl Mater Interfaces
ISSN
1944-8244
Publisher
American Chemical Society (ACS)
Volume
8
Issue
22
Pages
13902-13908
Language
eng
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Kim, B., Neo, D. C., Hou, B., Park, J. B., Cho, Y., Zhang, N., Hong, J., et al. (2016). High Performance PbS Quantum Dot/Graphene Hybrid Solar Cell with Efficient Charge Extraction.. ACS Appl Mater Interfaces, 8 (22), 13902-13908. https://doi.org/10.1021/acsami.6b02544
Abstract
Hybrid colloidal quantum dot (CQD) solar cells are fabricated from multilayer stacks of lead sulfide (PbS) CQD and single layer graphene (SG). The inclusion of graphene interlayers is shown to increase power conversion efficiency by 9.18%. It is shown that the inclusion of conductive graphene enhances charge extraction in devices. Photoluminescence shows that graphene quenches emission from the quantum dot suggesting spontaneous charge transfer to graphene. CQD photodetectors exhibit increased photoresponse and improved transport properties. We propose that the CQD/SG hybrid structure is a route to make CQD thin films with improved charge extraction, therefore resulting in improved solar cell efficiency.
Keywords
Charge transfer, Exciton dissociation, Graphene, Hybrid solar cell, PbS quantum dot
Sponsorship
European Research Council (340538)
Identifiers
External DOI: https://doi.org/10.1021/acsami.6b02544
This record's URL: https://www.repository.cam.ac.uk/handle/1810/286876
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