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Physics of Quantum Structures in Photovoltaic DevicesThere has been considerable activity recently regarding the possibilities of using various nanostructures and nanomaterials to improve photovoltaic conversion of solar energy. Recent theoretical results indicate that dramatic improvements in device efficiency may be attainable through the use of three-dimensional arrays of zero-dimensional conductors (i.e., quantum dots) in an ordinary p-i-n solar cell structure. Quantum dots and other nanostructured materials may also prove to have some benefits in terms of temperature coefficients and radiation degradation associated with space solar cells. Two-dimensional semiconductor superlattices have already demonstrated some advantages in this regard. It has also recently been demonstrated that semiconducting quantum dots can also be used to improve conversion efficiencies in polymeric thin film solar cells. Improvement in thin film cells utilizing conjugated polymers has also be achieved through the use of one-dimensional quantum structures such as carbon nanotubes. It is believed that carbon nanotubes may contribute to both the disassociation as well as the carrier transport in the conjugated polymers used in certain thin film photovoltaic cells. In this paper we will review the underlying physics governing some of the new photovoltaic nanostructures being pursued, as well as the the current methods being employed to produce III-V, II-VI, and even chalcopyrite-based nanomaterials and nanostructures for solar cells.
Document ID
20050206381
Document Type
Conference Paper
Authors
Raffaelle, Ryne P. (Rochester Inst. of Tech. NY, United States)
Andersen, John D. (Rochester Inst. of Tech. NY, United States)
Date Acquired
September 7, 2013
Publication Date
April 1, 2005
Publication Information
Publication: 18th Space Photovoltaic Research and Technology Conference
Subject Category
Solar Physics
Funding Number(s)
CONTRACT_GRANT: NCC3-710
CONTRACT_GRANT: NCC3-563
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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