CUED Publications database

High Performance PbS Quantum Dot/Graphene Hybrid Solar Cell with Efficient Charge Extraction.

Kim, B-S and Neo, DCJ and Hou, B and Park, JB and Cho, Y and Zhang, N and Hong, J and Pak, S and Lee, S and Sohn, JI and Assender, HE and Watt, AAR and Cha, S and Kim, JM (2016) High Performance PbS Quantum Dot/Graphene Hybrid Solar Cell with Efficient Charge Extraction. ACS Appl Mater Interfaces, 8. pp. 13902-13908.

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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.

Item Type: Article
Uncontrolled Keywords: Charge transfer Exciton dissociation Graphene Hybrid solar cell PbS quantum dot
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 18:57
Last Modified: 12 Dec 2017 02:08
DOI: