Environmental Engineering Reference
In-Depth Information
Figure 4.26.
Thin-film PV mounted on a roof.
Source:
Ken Fields at Wikimedia
Commons.
Table 4.3.
Cell efficiencies of different PV technologies in percentage of solar
radiation converted to electricity
Technology
Commercial
Laboratory
Monocrystalline
18-20
27.6
Polycrystalline
13-15
20.4
Thin film
8-10
20.3
Multijunction concentrator 25-30
42.4
Note:
The commercial efficiency is obviously lower than records reached under
laboratory conditions using experimental materials.
