November 3, 2008
Nanotube-silicon pairing makes
Coat a silicon wafer with carbon nanotubes
and you have a moderately efficient solar cell that could lead to
cheaper high-performance solar cells.
The heterojunction solar cell consists of a thin film of double-walled
carbon nanotubes on a silicon wafer and has a five to seven percent
efficiency. Heterojunction solar cells, which are formed by layering
two different semiconductor materials, are a potential route to lowering
the cost of high-efficiency solar cells.
Carbon nanotube thin films are potentially inexpensive and
could be used to make heterojunction solar cells with a practical
balance between cost and efficiency.
Heterojunction Solar Cells
Advanced Materials, published online October 17, 2008
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