Assertion: solar cell's efficiency | /r/HasProperty | improved through combination
Facets:
value: further
type: MANNER
Source sentences:
text: Since they are more expensive than their polycrystalline counterparts, mono-Si cells are useful for applications where the main considerations are limitations on weight or available area, such as in spacecraft or satellites powered by solar energy, where efficiency can be further improved through combination with other technologies, such as multi-layer solar cells.