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Solar cells with graphene and carbon nanotubes on silicon
- DOI:
- 10.1080/17458080.2011.572191
pages 565-572
- Received: 15 Nov 2010
- Accepted: 10 Mar 2011
- Published online: 12 Jul 2011
Abstract
Graphene and carbon nanotubes (CNTs) represent attractive materials for photovoltaic (PV) devices due to their unique electronic and optical properties. Graphene and single-wall carbon nanotubes (SWNTs) layers can be directly configured as energy conversion materials to fabricate thin-film solar cells, serving as both photogeneration sites and charge carrier collecting/transport layers. SWNTs can be modified into either p-type conductor through chemical doping (like acidic purification) or n-type conductor through polymer functionalisation. The solar cells can be simply made of a semitransparent thin film of graphene (or SWNTs) deposited on a proper type of silicon substrate to create high-density Schottky (or p–n) junctions at the interface. The high aspect ratios and large surface area of these carbon nano-structured materials can benefit exciton dissociation and charge carrier transport thus improving the power conversion efficiency.
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- Citation information:
- Received: 15 Nov 2010
- Accepted: 10 Mar 2011
- Published online: 12 Jul 2011
Author affiliations
- a Nanotechnology Center, University of Arkansas , Little Rock , AR 72204 , USA
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