Assertion: solar cell's layer | /r/AtLocation | bonded
Facets:
value: after soaking the film
type: TEMPORAL
value: covalently
type: MANNER
value: to the surface of the tio
type: LOCATION
Source sentences:
text: After soaking the film in the dye solution, a thin layer of the dye is left covalently bonded to the surface of the TiO 2 .