Abstract
Single-wall carbon nanotube (SWCNT) networks form a highly transparent and electrically conductive thin film that can be used to replace traditional transparent conducting oxides (TCOs) in a variety of applications. Here, the authors demonstrate their use as a transparent back contact in a near-infrared (NIR) transparent CdTe solar cell. SWCNT networks are hole-selective conductors and have a significantly greater NIR transparency than TCOs-qualities which could both make them very useful in tandem thin-film solar cells. SWCNT networks can be incorporated into single-junction CdTe devices and in CdTe top cells for mechanically stacked thin-film tandem devices, as described here. The best device efficiency using SWCNTs in the back contact was 12.4%, with 40%-50% transmission between 800 and 1500 nm.
Original language | American English |
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Article number | Article No. 243503 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 90 |
Issue number | 24 |
DOIs | |
State | Published - 2007 |
NREL Publication Number
- NREL/JA-520-41488